Stumble at Idle and Fuel Smell in the Oil.
04-13-2015, 09:33 PM
#21
I know right? It's just plain ignorant. I've seen that posted more than once here lately. Someone is going to get seriously hurt using starting fluid that doesn't understand how damn flammable that **** is.
I'm sure some people will say, "Oh I've been doing that for years.." All I have to say to that is, "Darwinism has not caught up with you yet."
04-13-2015, 11:42 PM
#22
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IIRC there's a TSB from GM stating to change the gap to .045
Check to see if the fuel pressure bleeds off when you shut the key off or if it holds.
If you can, check your fuel trims at idle and about 3grand. Depending on what they are will point you in the direction if its a vacuum leak or injector issue.
Check to see if the fuel pressure bleeds off when you shut the key off or if it holds.
If you can, check your fuel trims at idle and about 3grand. Depending on what they are will point you in the direction if its a vacuum leak or injector issue.
04-14-2015, 08:39 PM
#24
I'm going to try to borrow a scanner and see what I can do from there with this. For the fuel pressure bleed off test, do I have to clamp down a line or should it be alright by itself? Also, should the pressure stay firm while testing it no matter how long, or will it drop down after a while without the clamp?
Also check your ECT. If the car has been sitting for an extended period of time the IAT and ECT should be just about the same.
04-15-2015, 06:38 AM
#25
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Check it first the way it sits. Cycle the key a few times to build up pressure then shut the key off and let it sit. If it does drop thats when you will pinch a line off to see if it's an injector bleeding off.
Also check your ECT. If the car has been sitting for an extended period of time the IAT and ECT should be just about the same.
Also check your ECT. If the car has been sitting for an extended period of time the IAT and ECT should be just about the same.
04-15-2015, 06:44 AM
#26
I know right? It's just plain ignorant. I've seen that posted more than once here lately. Someone is going to get seriously hurt using starting fluid that doesn't understand how damn flammable that **** is.
I'm sure some people will say, "Oh I've been doing that for years.." All I have to say to that is, "Darwinism has not caught up with you yet."
I'm sure some people will say, "Oh I've been doing that for years.." All I have to say to that is, "Darwinism has not caught up with you yet."
04-16-2015, 10:27 PM
#27
Your spark plug gap is fine. GM recommends .045.
The fuel smell could be blow-by. Tune. PCV issue. Pick one and work on it.
For the PCV, I'd remove the LS1 valve and install a catch can. I have this and it works super.
For the tune, post it up if you can. I seriously doubt there is much to it. I think getting a mail-order tune for bolt-ons is a bogus way to make cash.
Last one is worst case. Blow-by would be the rings allowing fuel to get into the oil or vice versa. It would account for the smell and it would account for the stumble if oil were getting into the combustion chamber. Leak-down and compression test may be worth it.
The fuel smell could be blow-by. Tune. PCV issue. Pick one and work on it.
For the PCV, I'd remove the LS1 valve and install a catch can. I have this and it works super.
For the tune, post it up if you can. I seriously doubt there is much to it. I think getting a mail-order tune for bolt-ons is a bogus way to make cash.
Last one is worst case. Blow-by would be the rings allowing fuel to get into the oil or vice versa. It would account for the smell and it would account for the stumble if oil were getting into the combustion chamber. Leak-down and compression test may be worth it.
