1995 Sunfire
2.2 auto
149,xxx miles

My car just blew the head gasket, and was running great even after that happened. So I fixed the head gasket, and another problem became evident: when I try to start the car, gas literally floods the engine and goes out the exhaust. After first noticing the gas leak, I unbolted the exhaust except for the header. Then I cranked it with the fuel pump relay removed, and it poured out the header steadily. However, when I put the fuel pump relay back in place and crank it, gas gushes out of the header. I am certain this is gasoline and not water. It ignites. After that, I removed the gas inlet line to the intake, and even with fuel pump disconnected, gas will steadily pour out of the line when I crank the motor. There is obviously no residual pressure, as I even opened the gas cap to relieve any vacuum. New parts include plugs, o2 sensor, fuel pressure regulator, injector o-rings, etc. I have cleaned most electrical contacts and have a new battery if that could matter. Would anybody know what might cause gas to pour out the exhaust? Please help, I need this car immediately for school and work, and am running out of time and money.

Thanks a lot,

Daniel



I can't type in cursive!

Valve overlap maybe, or bad timing, appears that your not burning off the fuel completely and its being forced out through the exhaust.

or leaky injector......or unproperly seated injector....