gas in the oil

[Perry Mitchell]

My car was in storage for years until recently. When I checked the oil before starting the car, it was overfilled. It was also very thin. It also smelled like gasoline. How can gas get into the crank case?

[Demps]

Most likely: Leaking injector(s). Can also hydrolock cylinder(s) and bend/break stuff.

There’ll be others chime in but a comprehensive prep will be a must. Good catch on the oil if what you sense is truly gas in the oil. At a minimum I’d suggest a fuel system diagnostic/repair (pumps, filter, psi regulator, injectors, tank, lines, etc), remove all spark plugs, new fully charged battery, oil change, [maybe] fog the cylinders before I’d turn the engine over. Remember the engine stains easily too.

Ted

[Paul Workman]

Most likely: Leaking injector(s). Can also hydrolock cylinder(s) and bend/break stuff.

There’ll be others chime in but a comprehensive prep will be a must. Good catch on the oil if what you sense is truly gas in the oil. At a minimum I’d suggest a fuel system diagnostic/repair (pumps, filter, psi regulator, injectors, tank, lines, etc), remove all spark plugs, new fully charged battery, oil change, [maybe] fog the cylinders before I’d turn the engine over. Remember the engine stains easily too.

Ted

Perry,

Ted hits it on the head (again)! :dancing

[Perry Mitchell]

I agree with you 100%, it has to be leaking injectors. The question is how does the gas continue to fill the fuel log. Does the gas get siphoned from the tank? I am familiar with gas being drained from the fuel bowl on my 63 fuelie. That's why I installed a fuel shut off solenoid to prevent it but how does it happen on an LT5 motor? I have a fuel pressure gauge on the log but have never read it after the engine has been shut off. How long should the pressure last before dropping to zero? Does the fuel pressure regulator have anything to do with it? Doesn't it send the pressurized gas back to the tank? Your help is appreciated.