Crankcase filling with gasoline
 

My car is filling the crankcase with gasoline very quickly. Where is the best place to start trying to diagnose this problem? THANKS

Re: Crankcase filling with gasoline
 

Check the vacuum compensation line from the fuel pressure regulator for wet fuel. Should not be wet.

Does the exhaust smell extremely rich? The injectors could be flooding the cylinders, with the excess fuel bypassing the rings, into the crankcase.

Re: Crankcase filling with gasoline
 

Either your injectors are spraying waaaaaay too much fuel, or you have cylinders that are not firing.

Check spark plugs for signs of excessive wear/breakage and for fouling.

Also.....scan it while running to determine if all cylinders are firing and check fuel pressure.

KW

Re: Crankcase filling with gasoline
 

ts obdI so i don't have a compatable scan tool. I pulled the rails and injectors out and turned the key on and found no leakers. I have not tried to pop them off and watch them yet.

Re: Crankcase filling with gasoline
 

I'd expect at least one injector being stuck in the open position.....

KW

Re: Crankcase filling with gasoline
 

I did too, however no leaks.

Re: Crankcase filling with gasoline
 

I already pulled vacuum on the regulator and it held.

Re: Crankcase filling with gasoline
 

Also it's a bone stock 1994 model

Re: Crankcase filling with gasoline
 

Check the vacuum line from the EVAP purge solenoid for wet fuel.

Re: Crankcase filling with gasoline
 

evap purge is dry

Re: Crankcase filling with gasoline
 

You need to use the fuel pump prime connector and keep the pump on when you check. When you hit the key and don't start it, the pump only stays on for a couple of seconds. Other factors may be relieving pressure.

If you are getting as much gas in the crankcase as what you are saying, it almost has to be injector or f/p regulator related.

Re: Crankcase filling with gasoline
 

ground it or B+ to it?

Re: Crankcase filling with gasoline
 

+12v

Re: Crankcase filling with gasoline
 

I pulled the rail and wrapped baggies around each injector. One would work fine for about 6 pulses then it began to spray wildly.

Re: Crankcase filling with gasoline
 

And there you have it ;) ........

KW