|
Re: 96 Chevy 350 In Suburban Dumping Fuel Out Exhaust
Birken, don't know if this is helpful or not. Years ago, althought we were diesel mechanics, our shop had a rep come in and teach a day class on GM gas enjection systems. About the only thing I really do remember was that just the opposite to what you'd think, if you have some missfireing cylinders for whatever mechanical or ignition reason, the computer tells the injectors to pour way more fuel through them. The reason is: With missfiring cyls, the oxygen is not burned therefore the oxygen sensors sense too much oxygen and tell the computer the engine's running WAY lean so the computer has the injectors increase the fuel excessively. The instructor also stressed that most of the time the problem is mechanical (bad plug wires, etc), but everyone wants to blame an electronic component. The school was basically on that central inj. system that GM had (looked like a carb--don't remember the correct name) rather than multi-port.
|
