1989 45 hp Mercury - Carb Clean & Install - Part 3
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- Опубліковано 12 вер 2024
- This 45 hp Mercury would idle ok but when you put her into forward she would stall. Also the lower carb would not respond to any air mixture screw adjustments. So I felt it needed both its carbs cleaned.
After the cleaning she fired right up but I’m still having issues with cooling. The tell tale is still very hot and I need to correct this. Stay tuned for part 4 to find out why and how I corrected the problem.
Part 1 - No Spark - Switch Box, Stator or Trigger
• “No Spark” Is it a Bad...
Part 2 - Over heating even after installing a new impeller
• New Switchbox Regained...
Part 4 - Steaming Hot Telltale
• Steaming Hot Telltale ...
Part 5 - overheating try this!
• 1989 45 hp Mercury - O...
Part 6 - Overheating Hot Tell-Tail found the Problem
• 1989 45 hp Mercury - O...
I have this Motor. Just did a carb cleaning and now about to attempt to reassemble. Thanks for the input and awesome vid!
Can you tell me overall from end to end how long the plunger and plastic part for the choke is? I have 2 that are broken and trying to repair them but need to know the overall needed length please.
When you put the front cover frame piece back on how do you go about getting the choke plunger in there without bending it too far.
When installing carb. Does both carb baffles need to be open or closed
What jet settings/screw mixtures did you set? How many turns in/out for each one to start out with?
If I remember correctly it was 1-1/2 turns out from lightly seated for both.
I need to replace all the fuel hoses and fuel pump. I can run WOT fine but can’t idle. I have to start up and quickly put the high idle on and then get in gear or it does. I’ve traced it to not getting fuel. This looks like a miserable removal process to take the front pieces off!
Are you sure your idle circuits are clean in the carb?
@@LivetofishOutboardRepair I’m also going to clean the carbs as well since I’m going to be in there.
Im having flooding issues on my top carb. New gaskets and diaphragms. Musta had some crap in the fuel lines. They dont make these easy to get at
That’s for sure. 🤞 Good Luck . Keep at it you’ll solve the problem.
I have the same motor. Rebuild the carb. All new lines, filter etc. Will not idle. Only starts with throttle 3/4 way out. Any info where to start. All new plugs etc.
It sounds like you didn't clean the idle circuits out well on the carb clean. I would take it apart again and use a small wire to make sure you ream them out. Also have you done a compression test? No amount of tuning will help if the compression is low and uneven between cylinders.
I have this same exact motor with the same exact issue. Really hard to start and shuts off in gear, did you ever fix this outboard?
Dylan Napalo… I was able to get this motor to idle and run well after the carb clean but it had other more serious issues that caused the motor to run hot. If you check out the other videos on this motor you will see the conclusion in part 6 ua-cam.com/video/OnWXUnvqJt4/v-deo.html
Man that ran much smoother! You have a lot of patience for this motor lol! Good job though.
Thanks Seth...you have to have patience when working as a mechanic. It can be very frustrating at times but like my dearly departed Dad would say “Perseverance”. You have to be diligent and don’t give up. Thanks for words of encouragement. I really appreciate your comments.
@@LivetofishOutboardRepair yes no problem! I need to get some patience, I just got the lower unit back on my 12hp Bucaneer, starter it up. And it would spit and spudder and starter for a minute then die. Oh well back to it!
@@sethgabbard7705 don’t give up. Did you do a carb clean on it? Sync & link? Compression and spark?
@@LivetofishOutboardRepair definitely a spark and maybe fuel pump combined. It’s cutting in and out in one cylinder.
I have the same engine ,What rebuild kit did you use , could you share the link/info thanks
I used www.marineengine.com.
Just like the man said do compression test very first thing when trouble shooting. I just spent 300 dollars in power packs to realize I have one cylinder no compression took the cover off the dam piston is partially broke on one side and this thing still gets on plane very slowly. It’s now a parts motor
Even a compression check can show good results and still have scored cylinders and pistons. Check out this video. It’s part 6 of all the time I spent trying to fix it. ua-cam.com/video/OnWXUnvqJt4/v-deo.html
Yeah so you had a decent amount of compression you were wondering why it was getting hot. Yep that’s why it was in its way to do what my black max 150 just did. Save time and money and expense of a mechanic do the dam compression test but I guess that could still be a bit misleading
And this thing still runs it’s not overheating water pumps like crazy but the mercs are known to pump weak until you throw it into gear and give it a little rev my motor is hard to start but once it gets warm it great and boat still does about 50 when on plain. I’m still running it screw it until I can find another motor
That’s ok because you know that motor will probably grenade itself at some point. The motor I was working on was for a customer. He wanted me to get it running and sell it but I told him the motor was going to leave someone stranded on the lake. I convinced him to sell the motor for parts and he would still make money. He agreed 🙂
That was a very wise decision because yes this baby will probably throw a rod or something through the case with my exciting luck and I will end up with an even bigger pile of junk. I only fish on a fresh water lake close to my house I have a awesome trolling motor so when this happens at least I will be able to make it back 😂🤷🏻♂️🧨
Where is the reed valve in this motor? Is it easy to reach and take it off?
Tobias Funke …. The Reeds are located deep inside the engine. You need to split the powerhead to get to them. In other words you might just as well rebuild the motor while it’s apart.
@@LivetofishOutboardRepair thank you very much sir. You are very helpful for a new outboard owner like me.
Do them reed valves go bad often? If do what could be the symptoms sir?
@@tobiasfunke4314 They don’t go bad very often but if they do symptoms might be hard starting or visible fuel misting out of the carb(s).
I have this same exact motor. Mine idles fine, shifts fine into gear, but as soon as I get it into the lake I can’t get top end out of it. I just got it out of the shop and this was the first time I ran it today. I’ve had the carbs cleaned, replaced the motor mounts. Installed a new fuel line and hose, and I’m not sure where to go from here. My mechanic suggested running yamalube through it and I hope that works. Would you have any tips or suggestions? I’d greatly appreciate it
Did your mechanic check compression? If the rings are worn or stuck this might be the problem. The yamalube might help loosen the rings. Did your mechanic do a link & Sync?
@@LivetofishOutboardRepair I honestly don’t know if he did or not. I’m not very mechanically inclined, he said there was a little bit of carbon buildup and just to run some yamalube through a tank of fuel. I can get it a little past half throttle just fine but anything past that she bogs down. I’ve seen so many things that it could be and I guess I’m just a little overwhelmed and not enough money in the wallet
I know it can be frustrating but really is just a process of elimination. The first things I check are compression and spark then fuel delivery and carbs. Full throttle issues could be ignition related coils, trigger, Stator, switchbox. Your mechanic should have checked these things to diagnose the problem. If he did and all was ok then he might be right about the carbon buildup.
@@LivetofishOutboardRepair thank you for your time and explanation kind sir
So I’ve been out running yamalube through the motor today. Run about 15 minutes then let it cool for about 20. I noticed in the prop where exhaust comes out that there is this white/ cream colored sludge. Is that just carbon buildup or something more serious? It wasn’t like that when I first started running it
i have the same motor and im having issues. the carbs have been cleaned and rebuit. When it gets up to 3100 rpm its starts to rattle and will not accept gas and is going about 21 mph. Is that a top end bearring issue?
it also has perfect compression.
It’s possible but might even be Reed valves. The only way to know is split the case and examine them.
@@LivetofishOutboardRepair Its on a 17ft bass tracker. Itll get up to 21 mph and then rattles and makes noise. its the same as 3100 Rpm. What rpm should it run wide open no issues ?
I don’t have my service manual with me but if I recall correctly that motor should achieve 4500 - 5500 rpm but this is from memory.
Where does the inlet spring needle go?
The spring goes over the air mixture screw. The screw goes into the upper right front side hole of the carb, just above the small brass jet.
I have same exact motor may I get the part number for this carb kit
Josh Hemmerle…. The carb kit can be purchased through www.marineengine.com
The part number for the kit is 1395-9023
Thanks for watching and commenting.
Is it possible a site where you can order these details!
Check out www.marineengine.com they carry almost everything you could need.
I have the same carburetors. I pulled them off and cleaned them twice and it still will not pull ANY gas through them. I squirt in a little fuel and it runs and dies. My mind is totally blown.
Maybe the problem is with the fuel pump?
@@LivetofishOutboardRepair I think it is. I pulled out the top air mixture screw and filled the float chamber with gas and it fired up. That was least of my problems. After running it a bit water started coming out the top spark plug :(
Not good
@@LivetofishOutboardRepair I'm not sure if outboard motors are suppose to be quiet but I can hear noises inside the motor like bearings are warn. Maybe it needs a total rebuild.
@@markmorgan1116 if water is leaking out the spark plug hole, I believe you have a rusted out block or it might just be the water jacket cover gasket is compromised. I would first do a compression test and see if the motor is viable. If the compression is good then move forward to see if the water cover gasket is bad. Outboard engine noise is hard to diagnose.
I have a 1989 Mariner 45 hp. It idles and go on slow speed but when you do full throttle the power is like 75% and then dies in about 45 seconds. Then primer bulb gets soft and pump it again and start it after multiple tries. Mechanic said the fuel pump looks fine. What would be the problem here. Help me sir
Tobias Funke …. Your high speed jet in the carb might be restricted and needs cleaned. If it’s hard starting then the idle circuits in the carb may also be dirty. Also does the power return when you pump the primer bulb at WOT? If so then your mechanic may be wrong about the fuel pump.
@@LivetofishOutboardRepair yes it stays hard on full throttle in neutral or gear but not on water. Primer bulb Only goes soft under load when full throttle
@@LivetofishOutboardRepair the power returned once when i pumped the primer on WOT but before it get there it died on water
Tobias Funke …. You may have a bad fuel line and/ or primer bulb. Also make sure your claps are tight and your not sucking air through loose fittings or leaking fuel in the fuel system.
Thank you very much. Ill check for it.