Need help 08 c6 ls3 oil smells like gas
11-23-2018, 06:52 PM
#1
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Need help 08 c6 ls3 oil smells like gas Hi guys need help been reading for a bit heard it could be a leaking injector or raptured diaphragm but I'm kinda new to the ls motors. Where is the diaphragm located if u guys can find me a pic and how can I check it . Is there a way to test and see if the fuel injectors are bad....car does need to crank like 4 times before it actually fires up oil pressure cold is 40 and when hot gets near the 25. Car has 112000. I have another c6 ls3 feels completely different like it has more power
Thanks guys
Thanks guys
11-24-2018, 12:18 PM
#4
Injectors could be leaking once you turn it off.. Try a SEARCH on how to check them. Very easy.
11-24-2018, 05:59 PM
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Previous owner did a full complete tune up about 8 months ago haven't checked the plugs yet going to do it tmm...and fuel injectors Idk guess I'll check them tmm aswell or look at the pistons from the spark plug hole see if one of the pistons are wet
11-24-2018, 06:40 PM
#6
If there’s gas in the oil it means there’s either too much gas getting into one or more cylinders from a leaky injector or it could be the right amount of gas getting in there but not being fully combusted. Are you getting any misfires? Checking each cylinder temp at the exhaust manifold can help reveal a partially dead cylinder. Spark plugs should tell a lot too.
And make sure you don’t run it long on oil that’s thinned out with gasoline!
And make sure you don’t run it long on oil that’s thinned out with gasoline!
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11-30-2018, 10:29 AM
#8
TECH Addict
Put a fuel gauge on rail turn key to run but don't start and see if the pressure drops quickly. For the best test pull the injector rail off manifold turn key to on a few times and see if any of the injectors are leaking. Put some paper towel under each injector and see which ones get wet. I had 2 that leaked one time and one leaked so bad that cylinder wouldn't fire at idle.
11-30-2018, 10:51 AM
#9
Put a fuel gauge on rail turn key to run but don't start and see if the pressure drops quickly. For the best test pull the injector rail off manifold turn key to on a few times and see if any of the injectors are leaking. Put some paper towel under each injector and see which ones get wet. I had 2 that leaked one time and one leaked so bad that cylinder wouldn't fire at idle.
Good advice. If you see it dropping pressure fast pull the rail up off the intake and leave everything connected and turn on the key but do not start it or bump the starter, I started a fire one day doing that. So when doing a test like this always have an extinguisher handy.
If it's dropping pressure fast and no injectors are leaking then the fuel pump check valve is bad but that won't affect it running rich or lean it just causes it to be hard to start.
11-30-2018, 02:10 PM
#10
Put a fuel gauge on rail turn key to run but don't start and see if the pressure drops quickly. For the best test pull the injector rail off manifold turn key to on a few times and see if any of the injectors are leaking. Put some paper towel under each injector and see which ones get wet. I had 2 that leaked one time and one leaked so bad that cylinder wouldn't fire at idle.
12-02-2018, 03:11 PM
#13
Clips on aftermarket ones too, exact same as OE. They all have to have clips even if the rails are bolted down, if there were no clips the pressure would push the injector down and the rail up till they separated, again even if the rails were bolted to the intake.
12-02-2018, 03:39 PM
#14
ModSquad
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I’ve never used injector clips. Ever.
12-02-2018, 07:15 PM
#15
I must admit I failed to reinstall the clips on aftermarket rails (my personal cars). I figured they wouldn’t fit and really aren’t needed. Aftermarket billet rails are so rigid I can’t see it being an issue. Plenty of OEMs never use the clips either.
I guess moral of the story for the OP is to make sure all 8 clips are installed if you pressurize the rail off the intake. I wouldn’t want to be nearby if one (or more) of the injectors got launched off the rail.
I guess moral of the story for the OP is to make sure all 8 clips are installed if you pressurize the rail off the intake. I wouldn’t want to be nearby if one (or more) of the injectors got launched off the rail.
12-03-2018, 03:12 PM
#16
Let me back up, most injectors have a slot in them for the retainer clip. Aftermarket rails may or may not have the injector bosses that allow re use of the clip (usually aftermarket rails don't but injectors do). If you have strong enough rails and stanchions it should be fine. But with flimsy stanchions and no clips you're asking for a fire, it's happened to many people. Here's a quick example
https://ls1tech.com/forums/texas-mem...fuel-rail.html
I had a buddies car that had FAST rails and a FAST 102 and it left him on the side of the road several times with a major fuel leak because the injectors kept pushing out of the rail. Had to modify the rail mounts (stanchions) and put spacers under the injectors (to keep them pushed up) to correct the issue. Before anyone says they weren't done right, I've installed hundreds of injectors and even had FAST on the phone many times over several months, they were aware of the issue and coming up with a solution. After a lot of research where I found several other people were having the same issue, and talking to FAST, FAST came up with the spacer idea and it does work. But it wouldn't have been needed if I were able to use the clips because the fuel pressure wouldn't have pushed down on the injector/up on the rail and separated them.
If you can use clips and choose not to, that's your car and your money.
If I have the ability to re use a free clip that I already have in my hand and potentially keep my car or a customers car from catching fire bet your *** I'm using them.
Some people will say I've never _______ and always been fine. Well people play russian roulette and walk away too... keep playing it and one day you won't.
If you left them off by mistake I'd make it a priority to get them back on ASAP, they can be installed with everything still on the car, they just snap on.
https://ls1tech.com/forums/texas-mem...fuel-rail.html
I had a buddies car that had FAST rails and a FAST 102 and it left him on the side of the road several times with a major fuel leak because the injectors kept pushing out of the rail. Had to modify the rail mounts (stanchions) and put spacers under the injectors (to keep them pushed up) to correct the issue. Before anyone says they weren't done right, I've installed hundreds of injectors and even had FAST on the phone many times over several months, they were aware of the issue and coming up with a solution. After a lot of research where I found several other people were having the same issue, and talking to FAST, FAST came up with the spacer idea and it does work. But it wouldn't have been needed if I were able to use the clips because the fuel pressure wouldn't have pushed down on the injector/up on the rail and separated them.
If you can use clips and choose not to, that's your car and your money.
If I have the ability to re use a free clip that I already have in my hand and potentially keep my car or a customers car from catching fire bet your *** I'm using them.
Some people will say I've never _______ and always been fine. Well people play russian roulette and walk away too... keep playing it and one day you won't.
If you left them off by mistake I'd make it a priority to get them back on ASAP, they can be installed with everything still on the car, they just snap on.
Last edited by 00pooterSS; 12-03-2018 at 03:27 PM.
12-03-2018, 03:13 PM
#17
You must use all aftermarket stuff. I work on OEM stuff all day, I can only think of one OEM that didn't have clips but it was a direct injected Ford escape with a heavy duty rail and mounts. If you're leaving them off on applications where they could be used, then you must like playing with fire. Pun intended lol.
Last edited by 00pooterSS; 12-03-2018 at 03:27 PM.
12-03-2018, 03:25 PM
#18
I must admit I failed to reinstall the clips on aftermarket rails (my personal cars). I figured they wouldn’t fit and really aren’t needed. Aftermarket billet rails are so rigid I can’t see it being an issue. Plenty of OEMs never use the clips either.
I guess moral of the story for the OP is to make sure all 8 clips are installed if you pressurize the rail off the intake. I wouldn’t want to be nearby if one (or more) of the injectors got launched off the rail.
I guess moral of the story for the OP is to make sure all 8 clips are installed if you pressurize the rail off the intake. I wouldn’t want to be nearby if one (or more) of the injectors got launched off the rail.
If you have aftermarket rails you likely can't use the clips, I fubared that initial comment I was thinking injectors and typing about rails. The rails are strong but the issue is the flimsy stanchions, that's why people end up upgrading to billet stanchions.
12-03-2018, 04:28 PM
#19
Yeah i agree pooter, I think we’re on the same page. I’m not advocating getting rid of the oem injector clips. It just so happens I’m not running them due to aftermarket rails and figured there are likely others out there in the same boat. Or maybe have clips missing after a shop worked on their car.
More importantly, I just wanted the OP to be aware of the potential problem that could arise if the clips are missing. I realize not everyone on the boards is car savvy. Some people even buy cars that have been modified, so may be unaware of the oem parts missing, etc. But the stakes are high if this easy test is done wrong. Even if done right, and you do find a leaker or 2 you’re going to have some raw fuel coming at you.
More importantly, I just wanted the OP to be aware of the potential problem that could arise if the clips are missing. I realize not everyone on the boards is car savvy. Some people even buy cars that have been modified, so may be unaware of the oem parts missing, etc. But the stakes are high if this easy test is done wrong. Even if done right, and you do find a leaker or 2 you’re going to have some raw fuel coming at you.
12-03-2018, 05:03 PM
#20
Yeah i agree pooter, I think we’re on the same page. I’m not advocating getting rid of the oem injector clips. It just so happens I’m not running them due to aftermarket rails and figured there are likely others out there in the same boat. Or maybe have clips missing after a shop worked on their car.
More importantly, I just wanted the OP to be aware of the potential problem that could arise if the clips are missing. I realize not everyone on the boards is car savvy. Some people even buy cars that have been modified, so may be unaware of the oem parts missing, etc. But the stakes are high if this easy test is done wrong. Even if done right, and you do find a leaker or 2 you’re going to have some raw fuel coming at you.
More importantly, I just wanted the OP to be aware of the potential problem that could arise if the clips are missing. I realize not everyone on the boards is car savvy. Some people even buy cars that have been modified, so may be unaware of the oem parts missing, etc. But the stakes are high if this easy test is done wrong. Even if done right, and you do find a leaker or 2 you’re going to have some raw fuel coming at you.
I hear ya and I agree. I never took your post as advocating getting rid of them btw.