I am posting for my husband who is a mechanic he has a few ideas. I made him text it to me so I am just pasting and copying lol.😂 Dirty or bad injectors. They can be removed and tested. Remove throttle linkage and test movement at injector pump of throttle. Injection pump could be bad from age or contamination of water and fuel. Fuel filters would have been the first thing to check. Black smoke could be diesel, not burning properly or too much diesel, or injector, not injecting properly, which causes the black smoke. Smell could be from diesel, not burning properly. Could try running some fuel treatment. Need to look at the filter with water separator make sure it doesn't run out of fuel. The lift pump might be weak. That's the pump that you use to prime the system if water doesn't. If the if the injector pump doesn't get enough fuel from the lift pump, it could do the same thing. The lift pump is the electric pump that comes on first. Add a fuel stabilizer cleaner, take the boat out and watch the filter with the water separator and make sure it stays full of fuel doesn't run out.
If you are cleaning filters there is actually a third filter in your system. My 85 with the universal model 12 had an electric pump at the tank. If you look at the bottom of that pump there is a nut. That if turned will allow you remove the bottom of the pump as one unit with the nut. You will find a primary filter screen there. After I was out in a bad storm with very bouncy seas -much like your experience but yours was longer - that filter screen was about covered with the slime that can grow in diesel. In my case it was so bad after the storm from the stuff at the bottom of the tank getting pulled into the pump, mine would not run above idle. No idea if causing your symptoms but it is an important part of the fuel delivery system to check. Just put a container under pump before you unscrew.
Hey there neighbor. We have a Hunter 29.5. Always dreamed of doing the dry tortugas. We anchor at anchlote and Caladesi all the time. Her name is shooting star. If you see us, feel free to come by and say hi!
Check your impeller. Might be part of the smell if is starting to come apart. Check your oil as well for any streaking or creamyness. Generally it would not start that easy if you had an injector problem.
I understand about the heat. Im just south of you in Venice and its no fun sailing when it feels like 101. Ive learned to leave early in the morning and get back by 10:30. As far as the engine goes, everything ive read below could be the problem, just get there in the morning and work until its to hot and then come back the next day and pick up where you left off, you will find the problem.
check your prop for growth or something wrapped on it. Black smoke is a sign of overloading , also check your stuffing box on your shaft to assure it is not too tight. I also didn't like the mounting of your alternator looks like it is binding, the mounting bracket may belong on the back of side of the front of the alternator. You also had alot of junk in your water separator, you may have water in your tank and possibly algae in your tank. an aside of all of this you might want to get rid of the fuel filter in the back of the engine and place another filter with water separator in series next to your first filter/separator.Hope this helps. Floyd
Water in the fuel and dirty filter’s definitely part of your issue. Your injectors might also be dirty. Try an additive to clean injectors. Also check your exhaust elbow to see if it’s partly plugged. The M12 is always circulating and scrubbing your fuel when your switch is on. I’d keep an eye on the water separator as you might have more water in the tank. If injectors don’t clean up, you might have to replace the injectors. I would guess that your fuel air vent went under water and introduced the water. Good luck. Wish we lived closer, it would be great to work through similar issues as we have the same boat and motor. We will be in Florida next month. I’d love to meet one day. Eventually, I want to move to Florida and sail our 28 down.
If you have a small amount of water in the fuel tank, the water separator can take care of it - check and drain that each visit. If you don't see water in the separator bowl, but have smoke at half or more throttle, the smoke generally isn't from water in the fuel. However... Don't waste your time with alcohol in the tank because a pint of alcohol can't absorb a pint of water. Best to siphon water out of the tank (it'll be on the bottom), and treat the fuel with a biocide so you won't get a 'diesel bug' infection. Inspect the tank annually. It should smell like diesel, and there should be nothing on the bottom of the tank. Something that looks and smells like tapioca vomit means you have an infection - the tank has to be drained and cleaned. Edit... Seeing your responses about the new exhaust and relatively clean hull/prop, and seeing water in the fuel, I'd inspect the fuel tank. It sounds like you may have a 'diesel bug' infection. It will cause these exact symptoms, especially the strange exhaust smell. If there's an infection in the tank, the tank might smell 'mostly' like diesel, but there will be a tangy/biologic 'off' smell. Siphoning more fuel out of the tank will make it smell much worse until it's full 'tapioca vomit'. Good hunting... Do your testing at the dock while tied up. 5 minutes of warm up at idle, then put it in gear and pull against the mooring lines. Andy, SV Jane Ann, St Pete
Black smoke from diesel exhaust is almost always overloading. White smoke points to injectors, water etc. First thing to check is if you have something fouling the propeller. Also, Dunedin marina is a great place to grow stuff on the hull and prop. Call Ales the diver for a bottom scrub……. Alan and Dorothy, SV Seas the Day
Learning through your problems mate. I see several suggestions about cleaning your tank. I understand that is a yearly or periodic task. I also read some of the diagnostics required to keep an eye on it. I am sure that is a task that goes in the maintenance log.
Interesting. The old tank was from 1985, and aside from finally corroding and getting a pin hole after 37 years, I never had a problem with it. I replaced the tank last year or so... new fuel lines also, but that's nothing to do with getting bad fuel I suppose. Something is telling me it has to do with an extra load the engine is seeing (reason not discovered yet) or injectors that finally gave up. I lean towards bad fuel for two reasons: 1. weird smell and 2. I found water in my fuel filter water Seperator. I'm eager to figure it out!
Since they started adding more 'bio' content in diesel it has encouragement diesel bug and after the bashing your boat had it may have dislodged dirt in the tank as well as maybe having water ingress. If the separator is clean and stays clean then your fuel is fine and you may have to look elsewhere. Definitely test it at the dock, tied up to see if there's a difference when it's in gear and under load against throttle only. Good luck
Boats do not need the air filtration land based vehicles require as boats do typically encounter dusty dirty air. Black soot from a diesel is and indication of unturned fuel. You may start by looking at your injectors and as some else suggested a compression test or cylinder leak down to eliminate possible ring problems. If the engine has a turbo which I doubt I would start there.
@@AdventuresInParadise removing injectors is generally an easy job. However, as you and every boat owner learns the ease of a job depends on access. Do you know the total hours on your engine because many diesel last 10,000 hors or more.
@@jereland8200 I don't know the hours but it's an 85 so let's just say a lot. Access to the injectors seems good. I'm thinking about fresh fuel running first and the exhaust riser is being mentioned as possibly blocked, so it's old and probably can get replaced also. Would worn injectors cause the issue at higher throttle settings but not lower? It seems like unburned fuel at higher RPMs.
Never hurts to try fresh fuel but I lean towards thinking an injector is clogged or perhaps the timing jumped. I would start with ensuring there is no restriction in air intake then move to injectors and then timing. Beyond that I would consult a professional. The failing to achieve rpm beyond 1/2 throttle could be any of the above since black smoke and soot are symptoms of unburned fuel and resulting lack of power.
A black oily airfilter is no good on a diesel. Check your CDR valve (Crankcase Depression Regulator) if that diesel has one and it should, similar to the PCV in a gas engine. It regulates the pressure in the crankcase. If it gets clogged you will have blow by going back to your airfilter and will have performence and power reduction. From your video this is what it seems like is the cause. Diesels need two things, Air and fuel, restrict either and you will have a poor performing engine. I hope this helps.
Yea, yea, so we are not supposed to say this stuff anymore. But I am old school: You are a lucky man in so many ways, but your Wife is your grand achievement. Amazingly wonderful smile and oh so very beautiful. You are very lucky indeed!
I would vote on a fuel injection issue. The injectors are the likely culprit. They do sell additives that might help, but sometimes it means injector service. The black smoke is a key indicator of an injector issue. However, the fuel might be bad as well, the oil in the filter also isn't particularly good. Check or change your oil and see if it is milky. There could be a compression issue, but at least it likely isn't a head gasket....that would be billowy white smoke. It looks like there is proper water flow from the exhaust passing water. Though the exchanger could be plugged on the internal coolant side causing an overheat in the engine. Look at the temp gauge or use an ir thermometer.
Thanks. Good stuff. There is no oil in any filter except the oil filter... maybe you misheard me in the video? I only oiled the gasket of the filter. My oil looks good and the level stays the same. Exchanger is good, cleaned it and replaced all the coolant lines last year. temp is always good and I have a digital temp 2nd gauge right on the head and it's always the same and does not overheat.
If you are getting soot in the exhaust, that comes from overloading the engine. Check your prop for fouling. I would not be at all surprised to find some weed, barnacles or maybe plastic on your prop.
a lot of them? the bottom is cleaned monthly and although I don't believe they do the prop, last time I looked it maybe had two the size of a pencil eraser. I have not dived the prop in a few months.
Multiple issues. Bad fuel is the primary problem. You need to dispose of what you have on board and clean your fuel tanks. You also probably have an issue with the exhaust. Have a look at your exhaust elbow. It’s probably about to go.
He reported the exhaust has been replaced recently. I agree with fuel. This sounds exactly like a diesel bug infection. I bet he'll find 'tapioca vomit' in the bottom of the fuel tank.
@@RechargeableLithium Roger that. Well, if the exhaust is good then it’s 100% fuel related. I’m guessing he still has bad fuel but he may also need to have his injectors rebuilt or replaced if he was running a bunch of water through them.
Water in fuel or the high pressure fuel injection pump going bad...the big pump that powers the injectors...that 90%of problems with older motors that run mechanical injection......hope that helps.
Ok, that's a new suggestion, thank you. What's the idea there, or how can the pump going bad make black smoke and weird smell during higher load or more throttle? Is it easy to replace?
Probably water in the fuel...you can add Iso-Heet which is basically Isoproyl alcohol that will emulsify the water and allow it to be passed through the engine and "burned-off" with minimal effect on the performance of the engine.
Glad to see you posting again. Have you checked for a fouled prop? Did you happen to notice any fuel sheen in the water at any point? Injector issues could cause that but I might expect to see a fuel sheen on the water. It sounds like unburnt fuel, which usually means excessive drag on the engine, blocked air intake or injector issues. I am sure you will figure it out. Does it exhibit this behavior in neutral?
I have not checked for a fouled prop. The boat has had a few bottom cleanings since use last. No fuel sheen and feels normal in Neutral. Also feels normal as we pull out of the slip, but when I give her anything past Half way, black smoke, black water, weird smell. I was thinking about injectors but weird how it was all of the sudden.
@@mvintrigue-trawlerdiy1101 Exhaust. No smell inside. Only when it's past 1/2 throttle. At low speeds, water is clean, minimal smoke (but there used to be none) and no smell. Past 1/2 throttle and smells, black exhaust water, more smoke.
I'm starting to think the weird smell is a good clue of bad fuel. it's just a weird smell and only when getting on it last part throttle. It would explain it all. I think I'll find a way to suck fresh fuel from a glass jar and do a run like that to find out.
Hello Your shows are great . I wonder if you know of a Catalina 22 like your original 22 in great condition located in Florida for sale ? Prefer the swing keel Thank you Scott
iS IT MAKING OIL ? ( The dipstick reads above fuel ) ? Does it act the same in neutral ? Could be your prop is fowled ! Your water intake is clogged ! NO need to change the whole filter just purge the water .
Hmmm.. I've owned the boat a few years and never changed the fuel filters, so it was time. I replaced the fuel tank and all fuel lines last year, also last year coolant lines replaced and heat exchanger cleaning. Just maintenance. I think it's the same in neutral but I'm not sure, I'll have to test that. It seems like it was fine but smokes with throttle and then after it runs a while lacked RPM. Slightly smoky low rpm turns to black smoke and black water at more throttle. Oil level seems constant, always has and hardly leaks oil, maybe just seeps a little as it's from 1985. I change it yearly. It pumps water same as it always has and no change in temp. I have a second engine temp on the head, digital readout, always looks good. Bottom has always been cleaned monthly professionally. Thanks for commenting.
Thanks for the comment. I installed a new exhaust hose not long ago. Water seems to come out fine. After reading your comment and looking online, I see how that happens, thanks. So is the theory that when it gets corroded, the extra effort to push the exhaust out causes extra load on the engine?
Exactly. Diesels don't have a throttle - intake and exhaust are always 'wide open' for normal operation. Power is adjusted by changing fuel delivery. If the intake or exhaust can only breathe enough air to make 3 hp, adding more fuel just makes more smoke because there's not enough air flowing to burn all the fuel.
@@AdventuresInParadise Def - I strongly suspect this is a diesel bug problem. I'm on my boat in St Pete. I always use a biocide. A friend and I tried a run to the Tortugas a few months back and he had a bad diesel bug infection. Stinky smoke and a 3 Kt speed limit. We ended up staying in the ICW, changing water separator filters up to twice a day, and siphoning fuel until his tank was empty. We couldn't get all of the 'tapioca vomit' and bacteria strings out, but got it clean enough to make it back at more than half throttle. Had to pull the tank when we got back.
It's not about the hose, it's the thing that the hose is connected to, the riser. Unbolt it from your engine and clean out the carbon. You should do this anyway every 3 years or so. Carbon builds up over time and eventually blocks the exhaust.
Is the "plasticy" smell in the exhaust or in the engine bay? (Edit...saw your comment...exhaust, not engine bay) How long has it been since the hull was cleaned? (Edit...should be clean enough to not bog the engine this badly) Black smoke is unburned fuel. No smoke until you demand more than half throttle suggests the engine is operating normally until you demand power. You have changed fuel filters (to drain the water) - you can check off step one. Step 2 is to swim and see if the prop blades are 1" thick with barnacles. Don't do any other testing until you know the prop is clean. Get into the fuel tank - sounds like you have a diesel bug problem. Can't treat it if it's this bad - gotta siphon out the tank. Fair Winds from SV Jane Ann in St Pete
The bottom is cleaned monthly by a service. Last I looked, the prop looked good, but I should dive and make sure it spins freely, but if not, why the normal idle? I'm thinking about running with a fresh fuel container to quickly find out if it's the fuel. Thanks for the info!
I have a small Yanmar. Most other marine engine are similar. Start, check for cooling water in the exhaust. 5 minute warm up at idle. After running and before shut down, a 5 minute idle to let the engine cool down inside. Absolutely - try running from a fresh fuel can. If the same behavior, check for a partially clogged exhaust mixing elbow (I don't recall if you changed the elbow or 'just' the exhaust hose). Enjoy the boat yoga!
Live on one? I thought that also, then I began sailing. After a day I can't wait to get off! Maybe in a place that's less hot than Florida, LOL. At least in a RV you can go places, but a boat you're kinda stuck without using a dinghy to shore... Def. something to try before committing!
I am posting for my husband who is a mechanic he has a few ideas. I made him text it to me so I am just pasting and copying lol.😂
Dirty or bad injectors. They can be removed and tested.
Remove throttle linkage and test movement at injector pump of throttle. Injection pump could be bad from age or contamination of water and fuel. Fuel filters would have been the first thing to check.
Black smoke could be diesel, not burning properly or too much diesel, or injector, not injecting properly, which causes the black smoke. Smell could be from diesel, not burning properly. Could try running some fuel treatment. Need to look at the filter with water separator make sure it doesn't run out of fuel. The lift pump might be weak. That's the pump that you use to prime the system if water doesn't. If the if the injector pump doesn't get enough fuel from the lift pump, it could do the same thing. The lift pump is the electric pump that comes on first. Add a fuel stabilizer cleaner, take the boat out and watch the filter with the water separator and make sure it stays full of fuel doesn't run out.
If you are cleaning filters there is actually a third filter in your system. My 85 with the universal model 12 had an electric pump at the tank. If you look at the bottom of that pump there is a nut. That if turned will allow you remove the bottom of the pump as one unit with the nut. You will find a primary filter screen there. After I was out in a bad storm with very bouncy seas -much like your experience but yours was longer - that filter screen was about covered with the slime that can grow in diesel. In my case it was so bad after the storm from the stuff at the bottom of the tank getting pulled into the pump, mine would not run above idle. No idea if causing your symptoms but it is an important part of the fuel delivery system to check. Just put a container under pump before you unscrew.
Good point. I replaced my pump over winter.
Hey there neighbor. We have a Hunter 29.5. Always dreamed of doing the dry tortugas. We anchor at anchlote and Caladesi all the time. Her name is shooting star. If you see us, feel free to come by and say hi!
Check your impeller. Might be part of the smell if is starting to come apart. Check your oil as well for any streaking or creamyness. Generally it would not start that easy if you had an injector problem.
Yep, first thought was to check the impeller, had one come apart, same symptoms
I understand about the heat. Im just south of you in Venice and its no fun sailing when it feels like 101. Ive learned to leave early in the morning and get back by 10:30.
As far as the engine goes, everything ive read below could be the problem, just get there in the morning and work until its to hot and then come back the next day and pick up where you left off, you will find the problem.
Barnacle buster in the cooling system to clean out heat exchanger.
In a not so long ago episode, I did that. Canged the cooling hoses, painted the exchanger, new zinc.
check your prop for growth or something wrapped on it. Black smoke is a sign of overloading , also check your stuffing box on your shaft to assure it is not too tight. I also didn't like the mounting of your alternator looks like it is binding, the mounting bracket may belong on the back of side of the front of the alternator. You also had alot of junk in your water separator, you may have water in your tank and possibly algae in your tank. an aside of all of this you might want to get rid of the fuel filter in the back of the engine and place another filter with water separator in series next to your first filter/separator.Hope this helps. Floyd
Water in the fuel and dirty filter’s definitely part of your issue. Your injectors might also be dirty. Try an additive to clean injectors. Also check your exhaust elbow to see if it’s partly plugged. The M12 is always circulating and scrubbing your fuel when your switch is on. I’d keep an eye on the water separator as you might have more water in the tank. If injectors don’t clean up, you might have to replace the injectors. I would guess that your fuel air vent went under water and introduced the water. Good luck. Wish we lived closer, it would be great to work through similar issues as we have the same boat and motor. We will be in Florida next month. I’d love to meet one day. Eventually, I want to move to Florida and sail our 28 down.
Mixing elbow is clogged.
Glad to see you back. Try some BG44K in the fuel. That will surely help to clean a fuel injector problem which this sounds like the problem is.
If you have a small amount of water in the fuel tank, the water separator can take care of it - check and drain that each visit.
If you don't see water in the separator bowl, but have smoke at half or more throttle, the smoke generally isn't from water in the fuel. However...
Don't waste your time with alcohol in the tank because a pint of alcohol can't absorb a pint of water. Best to siphon water out of the tank (it'll be on the bottom), and treat the fuel with a biocide so you won't get a 'diesel bug' infection.
Inspect the tank annually. It should smell like diesel, and there should be nothing on the bottom of the tank. Something that looks and smells like tapioca vomit means you have an infection - the tank has to be drained and cleaned.
Edit...
Seeing your responses about the new exhaust and relatively clean hull/prop, and seeing water in the fuel, I'd inspect the fuel tank. It sounds like you may have a 'diesel bug' infection. It will cause these exact symptoms, especially the strange exhaust smell.
If there's an infection in the tank, the tank might smell 'mostly' like diesel, but there will be a tangy/biologic 'off' smell. Siphoning more fuel out of the tank will make it smell much worse until it's full 'tapioca vomit'. Good hunting...
Do your testing at the dock while tied up. 5 minutes of warm up at idle, then put it in gear and pull against the mooring lines.
Andy, SV Jane Ann, St Pete
Always good to see u guys. Always something stay tough bro
Check you exhaust elbow where the sea water exits the engine and enters the the elbow, they clog up all the time.
Something is wrapped around the prop. Try revving the engine in neutral, if it revs ok with no black smoke then you might need to take a dive.
hey you guys are back... hell yeah.
Black smoke from diesel exhaust is almost always overloading. White smoke points to injectors, water etc. First thing to check is if you have something fouling the propeller. Also, Dunedin marina is a great place to grow stuff on the hull and prop. Call Ales the diver for a bottom scrub…….
Alan and Dorothy, SV Seas the Day
Thanks, it's always been cleaned monthly by divers since I've owned it.
Learning through your problems mate. I see several suggestions about cleaning your tank. I understand that is a yearly or periodic task. I also read some of the diagnostics required to keep an eye on it. I am sure that is a task that goes in the maintenance log.
Interesting. The old tank was from 1985, and aside from finally corroding and getting a pin hole after 37 years, I never had a problem with it. I replaced the tank last year or so... new fuel lines also, but that's nothing to do with getting bad fuel I suppose. Something is telling me it has to do with an extra load the engine is seeing (reason not discovered yet) or injectors that finally gave up. I lean towards bad fuel for two reasons: 1. weird smell and 2. I found water in my fuel filter water Seperator. I'm eager to figure it out!
@@AdventuresInParadise You rock! New tank last year, you are killing it captain.
Since they started adding more 'bio' content in diesel it has encouragement diesel bug and after the bashing your boat had it may have dislodged dirt in the tank as well as maybe having water ingress. If the separator is clean and stays clean then your fuel is fine and you may have to look elsewhere. Definitely test it at the dock, tied up to see if there's a difference when it's in gear and under load against throttle only. Good luck
Thanks. The tank is only about a year old, but I'll bet the water got in there. I have now removed all the old fuel and will try some new fuel soon.
Sailing is so glamourous
1% of the time
Boats do not need the air filtration land based vehicles require as boats do typically encounter dusty dirty air. Black soot from a diesel is and indication of unturned fuel. You may start by looking at your injectors and as some else suggested a compression test or cylinder leak down to eliminate possible ring problems. If the engine has a turbo which I doubt I would start there.
Thanks, no turbo. Based on some reading I also suspect the injectors. I think I can remove them and take them to be checked, right?
@@AdventuresInParadise removing injectors is generally an easy job. However, as you and every boat owner learns the ease of a job depends on access. Do you know the total hours on your engine because many diesel last 10,000 hors or more.
@@jereland8200 I don't know the hours but it's an 85 so let's just say a lot. Access to the injectors seems good. I'm thinking about fresh fuel running first and the exhaust riser is being mentioned as possibly blocked, so it's old and probably can get replaced also. Would worn injectors cause the issue at higher throttle settings but not lower? It seems like unburned fuel at higher RPMs.
Never hurts to try fresh fuel but I lean towards thinking an injector is clogged or perhaps the timing jumped. I would start with ensuring there is no restriction in air intake then move to injectors and then timing. Beyond that I would consult a professional.
The failing to achieve rpm beyond 1/2 throttle could be any of the above since black smoke and soot are symptoms of unburned fuel and resulting lack of power.
Check your exhaust elbow. It's probably clogged and needs to be replaced.
A black oily airfilter is no good on a diesel. Check your CDR valve (Crankcase Depression Regulator) if that diesel has one and it should, similar to the PCV in a gas engine. It regulates the pressure in the crankcase. If it gets clogged you will have blow by going back to your airfilter and will have performence and power reduction. From your video this is what it seems like is the cause. Diesels need two things, Air and fuel, restrict either and you will have a poor performing engine. I hope this helps.
Where would I find this? Thank you!
Yea, yea, so we are not supposed to say this stuff anymore. But I am old school: You are a lucky man in so many ways, but your Wife is your grand achievement. Amazingly wonderful smile and oh so very beautiful. You are very lucky indeed!
LOL, agreed! Thank you! I could give it all away and as long as I have her I'm good. Nothing else really matters.
Call a mechanic and have him check everything on that engine. Always call a PROFESSIONAL.
I would vote on a fuel injection issue. The injectors are the likely culprit. They do sell additives that might help, but sometimes it means injector service. The black smoke is a key indicator of an injector issue. However, the fuel might be bad as well, the oil in the filter also isn't particularly good. Check or change your oil and see if it is milky. There could be a compression issue, but at least it likely isn't a head gasket....that would be billowy white smoke. It looks like there is proper water flow from the exhaust passing water. Though the exchanger could be plugged on the internal coolant side causing an overheat in the engine. Look at the temp gauge or use an ir thermometer.
Thanks. Good stuff. There is no oil in any filter except the oil filter... maybe you misheard me in the video? I only oiled the gasket of the filter. My oil looks good and the level stays the same. Exchanger is good, cleaned it and replaced all the coolant lines last year. temp is always good and I have a digital temp 2nd gauge right on the head and it's always the same and does not overheat.
If you are getting soot in the exhaust, that comes from overloading the engine. Check your prop for fouling. I would not be at all surprised to find some weed, barnacles or maybe plastic on your prop.
Check mixing elbow. I just replaced mine.
Love your videos
Thanks!
Have barnacles on the prop been ruled out? I had a similar mystery problem years ago, and that was all it was.
a lot of them? the bottom is cleaned monthly and although I don't believe they do the prop, last time I looked it maybe had two the size of a pencil eraser. I have not dived the prop in a few months.
Water in your cylinders maybe a bad head gasket, check the oil and do a compression test
Multiple issues. Bad fuel is the primary problem. You need to dispose of what you have on board and clean your fuel tanks. You also probably have an issue with the exhaust. Have a look at your exhaust elbow. It’s probably about to go.
He reported the exhaust has been replaced recently. I agree with fuel. This sounds exactly like a diesel bug infection. I bet he'll find 'tapioca vomit' in the bottom of the fuel tank.
@@RechargeableLithium Roger that. Well, if the exhaust is good then it’s 100% fuel related. I’m guessing he still has bad fuel but he may also need to have his injectors rebuilt or replaced if he was running a bunch of water through them.
I don’t know. I would do a compression test. If you have bad compression they can overhaul it. Might Be cheaper than repowering.
Water in fuel or the high pressure fuel injection pump going bad...the big pump that powers the injectors...that 90%of problems with older motors that run mechanical injection......hope that helps.
Ok, that's a new suggestion, thank you. What's the idea there, or how can the pump going bad make black smoke and weird smell during higher load or more throttle? Is it easy to replace?
Probably water in the fuel...you can add Iso-Heet which is basically Isoproyl alcohol that will emulsify the water and allow it to be passed through the engine and "burned-off" with minimal effect on the performance of the engine.
Glad to see you posting again. Have you checked for a fouled prop? Did you happen to notice any fuel sheen in the water at any point? Injector issues could cause that but I might expect to see a fuel sheen on the water. It sounds like unburnt fuel, which usually means excessive drag on the engine, blocked air intake or injector issues. I am sure you will figure it out. Does it exhibit this behavior in neutral?
I have not checked for a fouled prop. The boat has had a few bottom cleanings since use last. No fuel sheen and feels normal in Neutral. Also feels normal as we pull out of the slip, but when I give her anything past Half way, black smoke, black water, weird smell. I was thinking about injectors but weird how it was all of the sudden.
@@AdventuresInParadise weird smell is from exhaust outside or engine bay inside?
@@mvintrigue-trawlerdiy1101 Exhaust. No smell inside. Only when it's past 1/2 throttle. At low speeds, water is clean, minimal smoke (but there used to be none) and no smell. Past 1/2 throttle and smells, black exhaust water, more smoke.
I'm starting to think the weird smell is a good clue of bad fuel. it's just a weird smell and only when getting on it last part throttle. It would explain it all. I think I'll find a way to suck fresh fuel from a glass jar and do a run like that to find out.
Do you have any plans to buy bigger or different sailboat?
Yes, we're waiting on a larger slip. We're one year into the wait and could have another year or two.
Injectors or fuel compressor I would think
Hello Your shows are great . I wonder if you know of a Catalina 22 like your original 22 in great condition located in Florida for sale ? Prefer the swing keel Thank you Scott
I don't, sorry. Check facebook marketplace!
iS IT MAKING OIL ? ( The dipstick reads above fuel ) ? Does it act the same in neutral ? Could be your prop is fowled ! Your water intake is clogged ! NO need to change the whole filter just purge the water .
Hmmm.. I've owned the boat a few years and never changed the fuel filters, so it was time. I replaced the fuel tank and all fuel lines last year, also last year coolant lines replaced and heat exchanger cleaning. Just maintenance. I think it's the same in neutral but I'm not sure, I'll have to test that. It seems like it was fine but smokes with throttle and then after it runs a while lacked RPM. Slightly smoky low rpm turns to black smoke and black water at more throttle. Oil level seems constant, always has and hardly leaks oil, maybe just seeps a little as it's from 1985. I change it yearly. It pumps water same as it always has and no change in temp. I have a second engine temp on the head, digital readout, always looks good. Bottom has always been cleaned monthly professionally. Thanks for commenting.
Blocked exhaust riser.
Thanks for the comment. I installed a new exhaust hose not long ago. Water seems to come out fine. After reading your comment and looking online, I see how that happens, thanks. So is the theory that when it gets corroded, the extra effort to push the exhaust out causes extra load on the engine?
Exactly. Diesels don't have a throttle - intake and exhaust are always 'wide open' for normal operation. Power is adjusted by changing fuel delivery. If the intake or exhaust can only breathe enough air to make 3 hp, adding more fuel just makes more smoke because there's not enough air flowing to burn all the fuel.
@@RechargeableLithium Ok, I like this theory and although I'm going to test it with fresh fuel first, this is the runner up as of now.
@@AdventuresInParadise Def - I strongly suspect this is a diesel bug problem.
I'm on my boat in St Pete. I always use a biocide. A friend and I tried a run to the Tortugas a few months back and he had a bad diesel bug infection. Stinky smoke and a 3 Kt speed limit. We ended up staying in the ICW, changing water separator filters up to twice a day, and siphoning fuel until his tank was empty. We couldn't get all of the 'tapioca vomit' and bacteria strings out, but got it clean enough to make it back at more than half throttle. Had to pull the tank when we got back.
It's not about the hose, it's the thing that the hose is connected to, the riser. Unbolt it from your engine and clean out the carbon. You should do this anyway every 3 years or so. Carbon builds up over time and eventually blocks the exhaust.
Water in the fuel?
Where are you guys!!!!
Too hot to go work on the boat :-(. I have been working on it and getting video but it's always slow this time of year.
@@AdventuresInParadise I understand...
Bypass your fuel tank and run it off a jerry can of known good fuel.
Is the "plasticy" smell in the exhaust or in the engine bay? (Edit...saw your comment...exhaust, not engine bay)
How long has it been since the hull was cleaned? (Edit...should be clean enough to not bog the engine this badly)
Black smoke is unburned fuel. No smoke until you demand more than half throttle suggests the engine is operating normally until you demand power. You have changed fuel filters (to drain the water) - you can check off step one. Step 2 is to swim and see if the prop blades are 1" thick with barnacles.
Don't do any other testing until you know the prop is clean.
Get into the fuel tank - sounds like you have a diesel bug problem. Can't treat it if it's this bad - gotta siphon out the tank.
Fair Winds from SV Jane Ann in St Pete
The bottom is cleaned monthly by a service. Last I looked, the prop looked good, but I should dive and make sure it spins freely, but if not, why the normal idle? I'm thinking about running with a fresh fuel container to quickly find out if it's the fuel. Thanks for the info!
I have a small Yanmar. Most other marine engine are similar. Start, check for cooling water in the exhaust. 5 minute warm up at idle. After running and before shut down, a 5 minute idle to let the engine cool down inside.
Absolutely - try running from a fresh fuel can. If the same behavior, check for a partially clogged exhaust mixing elbow (I don't recall if you changed the elbow or 'just' the exhaust hose). Enjoy the boat yoga!
I told my coworkers that my dream is to live on a sail boat but b i dont know how to sail and they laughed
Im taking class by end of the year. Plus here they require license so i dont have a choice anyway.
Live on one? I thought that also, then I began sailing. After a day I can't wait to get off! Maybe in a place that's less hot than Florida, LOL. At least in a RV you can go places, but a boat you're kinda stuck without using a dinghy to shore... Def. something to try before committing!
@@AdventuresInParadise thanks for your response!!