i got news, i checked my oil today, and it is very dark, only 500 miles on it...i wiped some off of the dipstick and it smelt like fuel, turns out, there is fuel in the oil, i think it might be the FPR, but it also has a miss, only sometimes at 5 grand....could this be it, if someone could, please list all the possible things that could cause fuel/oil mixture in the block, i appreciate it....

 

Check the vacuum hose to the regulator. If it is wet or has the smell of fuel, the regulator is faulty.

 

You could also have a leaky injector. After you shut the car off, an injector could possibly be bleeding off into a cylinder. It's more likely though that your regulator is bad. Easy to check like Shoebox said.

 

I'm lost... how can fuel get into the crankcase from a bad FPR? It gets its vacuum via a port which is channeled into the intake runners of the manifold? So is everyone saying it can seep past the rings then?

 

That's a big 10-4 buddy!

 

hey, i checked my vacuum line, and it is fine, no signs of fuel leakage...does this mean a faulty injector? anybody got a good set of used ones?

 

I would see if any injectors are leaking before assuming a problem with them.

 

how do i check my injectors for leakage?

 

pull the rail up with all injectors attached. then with someine in car turn key to on position so the fuel pump primes and then turn key off and ckeck if any are dripping. Use rags.

 

ok, i will try that, if that isnt it, im goin for a Leak down/compression test... and if that isnt it, maybe an intake gasket? ill fill you in within a week

 

A fuel pressure gauge attached to the schrader valve is an easier way to check for a leaky injector, if the rest of your fuel system is working correctly. Placing your key to the run (not start) position provides 2 seconds of power to the fuel pump pressuring the fuel system for start-up. After the fuel pump shuts off, your fuel pressure should stay constant. If it's falling (not holding pressure) you have leaky injector(s), a bad fuel pressure regulator or the check vavle in the fuel pump is sticking open.

 

plz just tell me this, would it be runnin if it was a burnt ring? do u think it would still run ok? would it be noticible? I hope this is just an Intake Issue...

 

got news...none of the injectors were leaking when i checked them....also, i had to turn the engine over to get it to pump fuel through the Injectors, is this normal?

 

When you turn the key on, but don't start the engine, the fuel pump should run for 2 seconds and then shut off. In that 2 seconds, it should pressure the system to 40+psi, and the pressure should stay there for an extended period. You should not have to crank the engine to see fuel pressure.

Is it possible its running extremely rich? If its running rich enough, you'll soak the cylinder walls with fuel, wash the lubrication off the walls, and the fuel will get past the rings and get into the oil.

I saw you post on the thread about the air supply line from the throttle body to the passenger side valve cover, and I'm not sure why you thought that could be somehow connected to your fuel in oil problem. There is no fuel in the throttle body and there shouldn't be any fuel in the valve cover.

 

i am running rich...do you think i am still safe from a burnt ring? or do u think it is past that point? i turned car on and heard the fuel pump run..but my buddy said that nothing come out until i started cranking it over..not starting it, just cranking it... i just cant see why i am runnin rich?