Fuel in Oil
01-01-2011, 05:20 PM
#13
The regulator is not your problem, then. You've probably read that a leaking regulator will allow fuel into the engine. That can only happen on a regulator that is mounted on the manifold because it has a diaphragm, if in which a leak develops, will pass fuel through a vacuum line into the engine.
01-01-2011, 05:50 PM
#15
Teching In
Thread Starter
Join Date: Aug 2008
Posts: 41
Likes: 0
Received 0 Likes
on
0 Posts
Funny thing is that I know someone else having the same problem with an 07 model and chevy dealership can't find anything wrong with it but his oil is steadily gettin higher and smells like fuel. 
01-01-2011, 06:41 PM
#16
Do you have access to a scan tool? Any codes in the PCM for a rich condition? The truck must either be running rich, have a misfire where unburnt fuel is getting past a piston ring(s), or have an injector leaking down. It's not your evap system, as the charcoal canister would have to be totally flooded with fuel allowing the purge valve to dump raw fuel into the intake...this would most definitely pop an EVAP code. I can't think of anything with the PCV system that would cause this either...you'd either have the PCV sucking excessive oil/fumes/etc. into the intake and induction system, or oil blow by if the system was clogged.
I know that you isolated the injectors and checked for leakage, but how long did you let them sit? Maybe it takes a while. I'm assuming that the oil isn't milky and the coolant reservoir is full also...
I know that you isolated the injectors and checked for leakage, but how long did you let them sit? Maybe it takes a while. I'm assuming that the oil isn't milky and the coolant reservoir is full also...
01-01-2011, 08:26 PM
#18
Teching In
Thread Starter
Join Date: Aug 2008
Posts: 41
Likes: 0
Received 0 Likes
on
0 Posts
Coolant is full and oil is clean, I think the af was around 12.8 when it was tuned. The 07 truck that I know is doing the same thing and is bone stock with 37k miles on it.
