What would cause gas to be in the oil
On this 1999 silverado there are only a few things that would cause gas in the oil system one being a bad leaking fuel preassure regulator or a leaking injector. the engine should be running rough or rich and should have turned on the engine light. there are not any other ways to get gas in the oil but these are the most common but again the engine would not run to good and the check eng light would be on. the injector depending on the injection system would flood out the cylinder and make it skip inorder to get gas in oil, the most common would have to be the regulator leaking, but that would also make it run rich, if you remove the upper intake pelinum and turn ignition on but DONT try to start engine, a matter of fact dissconnect coil wire to avoid spark or a fire. with key on watch for fuel leaking out of regulator. have someone turn key on as you look at regulator.
×