And another good tip when changing oil is to fill the new oil filter before mounting it to the engine. It saves lots of cranking while waiting for the oil pressure.
@@Maskinservice No no, Never prefill the filter, because IF there are contaminants in the oil, You just put oil/contaminants INTO the engine bypassing the oil filter, this is deadly for cam/crank as well as their bearings. This is ONLY ok IF you work with a PREFILTER oil dispenser system. Else you just playing Russian roulette.
This "feature" isn't a feature per se. Pretty much every ECM controlled car in the last 30 plus years won't start if the gas pedal is pressed during start. It's not only a safety feature, but also designed to keep any potential flooding from occuring. The throttle position sensor sends the accelerator position back to the ECM to keep the ignition from firing. It also prevents high throttle start-ups.
GM has had that ever since they went to electronic fuel injection 1982 and the system was designed similar to a carbureted vehicle which when they were flooded you floored the throttle to clear out excessive gas.
I knew of this function and have used it for sometime now for when my car sits for an extended period of time. Use it essentially for the main use you mentioned, which is to provide lubrication to the engine after it’s been sitting a while and before you started. Never thought about it as far as a flooded fuel function. Love the videos keep up the awesome work.
Thanks Lyle, great discovery. I will be using this when I store my corvette for extended periods. Your videos are awesome and loaded with great information.
"Flood Control?" Hmmm, never heard of that one! This is definitely in your top five of useful tips! Of course this now begs the question, how did you come across this gem? Isn't this similar to what we use to do back in the day when our carbureted cars were vapor locked and/or flooded by putting the gas pedal to the floor and turning the ignition switch until it started? Save the Wave👋
I was doing some reading online about the C6 fuel smell issue for another video when I came across this nugget. IT is the same principle as the old-school carburetor method, but actually supported by the fuel injection software. I truly had no idea! Lyle
Thanks Lyle! I've made a note on this one! I have a question for you. Since I live in the Ice Box of Northern NJ, 😉, I never really lay my C6 GS up per se, but it will stay put sometimes for weeks on end. It's a manual, so I have the dry-sump setup. I guess it doesn't make a difference whether one has a dry-sump or oil pan for this procedure to be useful, or does it?
Good info. I had already learned it a couple of years ago with my 96 Impala SS. The fuel pressure regulator intermittently would make the engine hard to start. I think the cylinders were flooded when the engine was turned off. It still started ok in the morning. But it would crank and crank if the engine was still warm. After it did start, I could smell raw gas. Until I could get it fixed, I used the pedal to the floor to clear it. Then it started and ran fine. I took it to a shop I trust. They said the fuel regulator was shot and they replaced it. Now it starts on the first turn of the engine.
What would be even better is a pre-lube function, when dry sump vehicles could pre-lube oil through engine before cranking over. I work with 5000 HP industrial gas compression. Our drivers have both pre and post lube pumps. This removes dry/friction wear on ignition and dissipates excess heat from cylinders after engine shut down. I wonder how many more kilometers we'd get from vehicle engines if this was a standard procedure in our prized rides? Probably won't matter much, as soon everything will be spinning off electrons, lol. Cheers 🇨🇦 P.S. I love my Atomic Orange Z06. I'm dying before I give up "Rusty", ha ha
Perfect Timing on this. I was already looking into pulling the fuel pump relay. I was not stoked about having to pull this out every time I change my oil or let the car sit for a while. This is a MUCH easier method. Thank you very much for sharing. -Luis
The problem with doing Flood Clear to pre oil after sitting is that the crank and rods are not rotatiing fast enough to THROW the oil up to the walls and rings. Great for pressure lubed parts, but terrible for thrown lubed parts, and causes a lot of wall and ring wear unnecessarily. I want it to start and go to fast idle ASAP. Think about it.
Excellent tip. I've had my '84, since it was new, back in December of 1983. I had not heard of this function. I will try it out. My '84 isn't driven on a regular basis. I do use a unique oil made by AMSoil, which is formulated for marine and diesel engines. The most unique feature of this oil is it's ability to sit on the cylinder walls to prevent dry start up. Marine engines are used infrequently, so this has really protected my engine over the years. The diesel part, is that it is very high in Zinc and other trace elements to prevent wear, unlike most oils that are available today. Kudos to you and this tip, thank you so much for sharing. I will share it with my Corvette Club now. :)
From a service technician point of view it is a handy feature when doing what is called a relative compression test or even a regular compression test for that matter. The official term for this feature is called "clear flood". It is a nice feature.
I am genuinely fascinated that I actually knew about a thing that Lyle didn't. Though, he still has me 10 to 1 on actual useful information, but, shhh, let me have this victory.
I did not know this thank you very much. My C6 starts at such high RPM, and me being an old Shovelhead biker type dude, I'll fire it up for one and a half 2 seconds and shut it off to get the oil pumped through the engine. Basically priming the engine. Now I have this knowledge at hand. Right when I thought I knew everything
I used to use this function when buying a car to try to get a cheaper price on the car, saying that the car was hard to start and didn't know if I would buy it, then they would give me a little better deal but most people have learned about this function so I don't do it no more
Its called CLEAR FLOOD on the scan tool. And it is actually to flear a flooded engine. Its on all domestic EFI systems, whether GM, Ford, or MoPar. The ECM shuts off the injector pulsewidth when it sees the throttle position sensor [TPS] at wide-open-throttle [WOT] and the engine at/below the cranking rpm threshold.
Used to do the same thing with my old Plymouth Road Runner when I would start it up in the spring after it sat for the winter. The only difference is that I would loosen the distributor cap to keep it from firing then let it crank for a bit.
Reminds me of people who crank and idle for a full minute or two before putting it in gear. Oil has gotten to the parts already! And that starter is not saving anything by spinning and not cranking but it is pulling oil up to the top of the engine. Yes it is ejecting excess fuel in the carb or injectors, but until Detroit or wherever comes up with electric oil pumps that can be turned on pre-start, not much you can do.
Great tip Lyle. This reminds me of how to start a carbureted car that is flooded. Fuel isn't shut off, but it would likely start. So it makes sense that my counterparts over in ICE land would include this feature, #iworkforGM transmissions.
Can't thank you enough Lyle and just stumbled upon this by happenstance. I just bought myself an almost new super low mileage black over white over red 2013 427 convertible last Saturday....so I'm sure this might come in handy sometime. Thanks again.
This is great secret as my vette is stored during the winter months and I hated starting it in the spring without first turning it over and running oil through the engine. Thanks great tip. I will pass this on to my brother and brother-in-law as they have vettes stored as well.
Awesome tip Lyle man you never cease to amaze me about how much you know about corvettes and the help you give to me and many others in the Corvette world. I am going too try this tomorrow. Thanks Lyle !!
Wow. What a useful feature. Wonder why that information is not in owner manuals? I am going to use this mode every time before starting my two C8’s after they have not been started for a week or so. The most engine wear occurs at start up, especially after prolonged periods of storage.
A great tip. I used to do something similar when my motorcycle had sat for a while. Flick the kill switch, crank the engine to get oil pressure up, then flick back the kill switch and start normally. Always wished there was a similar thing you could do with the Vette. Now I know. 👍
This works on not just Corvettes but all late model cars. It has been like that for years. Also when you turn the key on it will always cycle the fuel pump so when your car has been sitting for a long time and may have leaked pressure down in the fuel rail just turn on the key wait till you hear the fuel pump time out then turn the key off wait a few seconds and turn it back on. This will make the fuel pump run again and when it times out crank the engine it will start right away no long term cranking.
This “clear flood” mode actually started way back in the pre-computer carburetor days! Wide open throttle would actually force the automatic choke to open!
Another great video. The only thing missing was how long you hold the gas all the way down. I went back and paused the video just before you did the live demonstration. It seemed to be a count of five. The really good part was what you thought the real benefit was. the lubrication of the engine.
Wow! just tried this today after my C5 had been sitting for 2 months on the battery tender. Cranked it three times, let off the gas and then it fired right up, oil pressure came right up as it should. Thanks for this great tid-bit!
I absolutely agree with the oil priming, that would make alot of sense & at least would be something to do especially if the car has been sitting for a while
This function can also be used when you have finished changing your oil to circulate it through the engine prior to starting it up.
I was thinking the same exact thing - Very useful, thanks to Lyle for this video :D
And another good tip when changing oil is to fill the new oil filter before mounting it to the engine. It saves lots of cranking while waiting for the oil pressure.
This.
@@Maskinservice l've always done that. Another reason to change your own oil. l also pull the coil wire for a few seconds of cranking.
@@Maskinservice No no, Never prefill the filter, because IF there are contaminants in the oil, You just put oil/contaminants INTO the engine bypassing the oil filter, this is deadly for
cam/crank as well as their bearings.
This is ONLY ok IF you work with a PREFILTER oil dispenser system.
Else you just playing Russian roulette.
That's probably the coolest Corvette secret I've heard of 😳😎
Second time I saw this video and it’s a good reminder for me after the car sits for 3 months each year! 👍
Thank you, I love to learn new things about my baby
Great tip. Thank you Lyle.
This "feature" isn't a feature per se. Pretty much every ECM controlled car in the last 30 plus years won't start if the gas pedal is pressed during start. It's not only a safety feature, but also designed to keep any potential flooding from occuring. The throttle position sensor sends the accelerator position back to the ECM to keep the ignition from firing. It also prevents high throttle start-ups.
Great tip I never knew, thanks for sharing
I've been doing this for years on my 2011 C6 GS after letting it sit for months.
What a great tip! I did not know either! Thank you!
I believe this function is shared with most, if not all electronic fuel injected vehicles. Not unique to Corvettes. But I do love me some Vette!
GM has had that ever since they went to electronic fuel injection 1982 and the system was designed similar to a carbureted vehicle which when they were flooded you floored the throttle to clear out excessive gas.
Very useful information for those Corvette's owners in the Great White North. Thank you for sharing Lyle !
Thx Lyle glad you found out Flood Clear, so I know now and I tell My Corvette Club "Corvette s of Choice" !!
Awesome, I didn't know that either after having 8 corvettes
You should do a video about ride control
You Are A Gentleman.
Wow , quite the feature. 👍🏻
Great feature on the corvette zo6.
I use that tech in spring after parking it.
Keep going Mister , really good.Just buy a 2004 .Love it.
That's a really good tip .
Wow...always learning
These videos are awesome 😎 thx
I knew of this function and have used it for sometime now for when my car sits for an extended period of time. Use it essentially for the main use you mentioned, which is to provide lubrication to the engine after it’s been sitting a while and before you started. Never thought about it as far as a flooded fuel function. Love the videos keep up the awesome work.
A great find, thanks !
Another great tip, saved for my future C5. Thanks !
Appreciate this
Wow, that’s a good one. Thanks
U r the man ,Lyle . Thanks
2008 C6. I have the coolest car in the world.
Thanks man. this is just awsome 😀😀😀😀
Great info!!
Thanks Lyle, great discovery. I will be using this when I store my corvette for extended periods.
Your videos are awesome and loaded with great information.
Thank's for the good advice !
"Flood Control?" Hmmm, never heard of that one! This is definitely in your top five of useful tips! Of course this now begs the question, how did you come across this gem? Isn't this similar to what we use to do back in the day when our carbureted cars were vapor locked and/or flooded by putting the gas pedal to the floor and turning the ignition switch until it started? Save the Wave👋
I was doing some reading online about the C6 fuel smell issue for another video when I came across this nugget. IT is the same principle as the old-school carburetor method, but actually supported by the fuel injection software. I truly had no idea! Lyle
Thanks Lyle! I've made a note on this one! I have a question for you. Since I live in the Ice Box of Northern NJ, 😉, I never really lay my C6 GS up per se, but it will stay put sometimes for weeks on end. It's a manual, so I have the dry-sump setup. I guess it doesn't make a difference whether one has a dry-sump or oil pan for this procedure to be useful, or does it?
Great tip thanks for sharing.
Good info. I had already learned it a couple of years ago with my 96 Impala SS. The fuel pressure regulator intermittently would make the engine hard to start. I think the cylinders were flooded when the engine was turned off. It still started ok in the morning. But it would crank and crank if the engine was still warm. After it did start, I could smell raw gas. Until I could get it fixed, I used the pedal to the floor to clear it. Then it started and ran fine. I took it to a shop I trust. They said the fuel regulator was shot and they replaced it. Now it starts on the first turn of the engine.
Thanks again!
Thanks Lyle. Great info!
What would be even better is a pre-lube function, when dry sump vehicles could pre-lube oil through engine before cranking over. I work with 5000 HP industrial gas compression. Our drivers have both pre and post lube pumps. This removes dry/friction wear on ignition and dissipates excess heat from cylinders after engine shut down. I wonder how many more kilometers we'd get from vehicle engines if this was a standard procedure in our prized rides? Probably won't matter much, as soon everything will be spinning off electrons, lol. Cheers 🇨🇦 P.S. I love my Atomic Orange Z06. I'm dying before I give up "Rusty", ha ha
Outstanding info!
Interesting. Similar to how we cleared flooding carbed engines.
Thanks for the info. I'll be using it next spring.
Thanks 👍
Perfect Timing on this. I was already looking into pulling the fuel pump relay. I was not stoked about having to pull this out every time I change my oil or let the car sit for a while. This is a MUCH easier method.
Thank you very much for sharing.
-Luis
Awesome! Thanks
Very useful for long storage or even clearing old fuel like e85 or somethin
This one is saved to my Favorites!
The problem with doing Flood Clear to pre oil after sitting is that the crank and rods are not rotatiing fast enough to THROW the oil up to the walls and rings. Great for pressure lubed parts, but terrible for thrown lubed parts, and causes a lot of wall and ring wear unnecessarily. I want it to start and go to fast idle ASAP. Think about it.
Great tip ,thanks
Thank you
Excellent tip. I've had my '84, since it was new, back in December of 1983. I had not heard of this function. I will try it out. My '84 isn't driven on a regular basis. I do use a unique oil made by AMSoil, which is formulated for marine and diesel engines. The most unique feature of this oil is it's ability to sit on the cylinder walls to prevent dry start up. Marine engines are used infrequently, so this has really protected my engine over the years. The diesel part, is that it is very high in Zinc and other trace elements to prevent wear, unlike most oils that are available today. Kudos to you and this tip, thank you so much for sharing. I will share it with my Corvette Club now. :)
Thanks for sharing. Similar, although much less known, to the “Magic Button”. This one is good for taking our northern Corvettes out of storage,
From a service technician point of view it is a handy feature when doing what is called a relative compression test or even a regular compression test for that matter. The official term for this feature is called "clear flood". It is a nice feature.
Thank you for the additional info, Randall! Lyle
I am genuinely fascinated that I actually knew about a thing that Lyle didn't. Though, he still has me 10 to 1 on actual useful information, but, shhh, let me have this victory.
Awesome info and good to know...
Thanks just this today works perfectly on the C6
I did not know this thank you very much. My C6 starts at such high RPM, and me being an old Shovelhead biker type dude, I'll fire it up for one and a half 2 seconds and shut it off to get the oil pumped through the engine. Basically priming the engine. Now I have this knowledge at hand. Right when I thought I knew everything
Thanks
I used to use this function when buying a car to try to get a cheaper price on the car, saying that the car was hard to start and didn't know if I would buy it, then they would give me a little better deal but most people have learned about this function so I don't do it no more
Great stuff thx so much!!
Its called CLEAR FLOOD on the scan tool. And it is actually to flear a flooded engine.
Its on all domestic EFI systems, whether GM, Ford, or MoPar.
The ECM shuts off the injector pulsewidth when it sees the throttle position sensor [TPS] at wide-open-throttle [WOT] and the engine at/below the cranking rpm threshold.
Used to do the same thing with my old Plymouth Road Runner when I would start it up in the spring after it sat for the winter. The only difference is that I would loosen the distributor cap to keep it from firing then let it crank for a bit.
Great stuff Lyle!! Thanks for sharing!!
Thanks a million very useful information.
Once more I always enjoyed your informative vlogs. Appreciate the info!👍🏿👍🏿👍🏿👍🏿
good to know.thx..
Reminds me of people who crank and idle for a full minute or two before putting it in gear. Oil has gotten to the parts already! And that starter is not saving anything by spinning and not cranking but it is pulling oil up to the top of the engine. Yes it is ejecting excess fuel in the carb or injectors, but until Detroit or wherever comes up with electric oil pumps that can be turned on pre-start, not much you can do.
Thanks Lyle..... I think I will try it out on my 2004 C5.
Well that's cool, thanks again Lyle for another info nugget. I learn something new every time. 👍
Very handy tip. Thanks Lyle. I will be doing that when I get to start my C5 if summer every shows up.
Had no idea...What a great trick
Great tip - it's not just Vettes but all contemporary GM vehicles; I did not think of using that function to build oil pressure, great idea!
We had a great time visiting you at the shop today! What a cool 😎 place!!! Tell the crew we said thank you!!!
Great to meet you, and thank you for your kind words! Lyle
Great tip Lyle. This reminds me of how to start a carbureted car that is flooded. Fuel isn't shut off, but it would likely start. So it makes sense that my counterparts over in ICE land would include this feature, #iworkforGM transmissions.
I believe most EFI cars since the 90's had a clear flood mode. I had learned this at a garage then.
Can't thank you enough Lyle and just stumbled upon this by happenstance. I just bought myself an almost new super low mileage black over white over red 2013 427 convertible last Saturday....so I'm sure this might come in handy sometime. Thanks again.
This is great secret as my vette is stored during the winter months and I hated starting it in the spring without first turning it over and running oil through the engine. Thanks great tip. I will pass this on to my brother and brother-in-law as they have vettes stored as well.
Awesome tip Lyle man you never cease to amaze me about how much you know about corvettes and the help you give to me and many others in the Corvette world. I am going too try this tomorrow. Thanks Lyle !!
Love learning new stuff about vettes thanks
Wow. What a useful feature. Wonder why that information is not in owner manuals? I am going to use this mode every time before starting my two C8’s after they have not been started for a week or so. The most engine wear occurs at start up, especially after prolonged periods of storage.
WHAT! Never heard that before🤔
Will we ever learn all the Corvettes secrets 😎👍
Thats Awesome! I agree for winter storage soooo ideal.
Thanks Lyle.👍
A great tip. I used to do something similar when my motorcycle had sat for a while. Flick the kill switch, crank the engine to get oil pressure up, then flick back the kill switch and start normally. Always wished there was a similar thing you could do with the Vette. Now I know. 👍
That's incredible. Thanks. Very helpful.
Heard about it but didn't know how to do it. Great info. Very helpful!
Thanks Lyle.
Nice, never heard of that, definitely remember that this spring, Thanks 😎👍
Thanks for the update. It will come in handy.
This works on not just Corvettes but all late model cars. It has been like that for years.
Also when you turn the key on it will always cycle the fuel pump so when your car has been sitting for a long time and may have leaked pressure down in the fuel rail just turn on the key wait till you hear the fuel pump time out then turn the key off wait a few seconds and turn it back on. This will make the fuel pump run again and when it times out crank the engine it will start right away no long term cranking.
This “clear flood” mode actually started way back in the pre-computer carburetor days! Wide open throttle would actually force the automatic choke to open!
Another great video. The only thing missing was how long you hold the gas all the way down. I went back and paused the video just before you did the live demonstration. It seemed to be a count of five. The really good part was what you thought the real benefit was. the lubrication of the engine.
Wow gonna try this on my 92 zr1
Wow!...Good info...I have a 93 C4...Did not know this either....
Very useful. Thanks Lyle
Wow! just tried this today after my C5 had been sitting for 2 months on the battery tender. Cranked it three times, let off the gas and then it fired right up, oil pressure came right up as it should. Thanks for this great tid-bit!
I absolutely agree with the oil priming, that would make alot of sense & at least would be something to do especially if the car has been sitting for a while
funny thing, i only learned this a few weeks ago! small world
Thank you, I never had a clue !
Cool!