sebas54
Petty Officer 1st Class
- Joined
- Jun 17, 2007
- Messages
- 334
Hi, I have a 1987 4.3l gm alpha 1 I/O. It usually starts right up the first time.
I have been having a problem with the engine stalling when shifting out of gear into neutral. Once it stalls it doesn't want to start back up. After a few minutes of trying it will usually start back up. When it finally starts up it sound like a pump or something in the engine is running and it is loud, but it goes away after a few seconds. It is sort of a metal sound (I was thinking the ring gear was worn and that could be the sound but it doesn't sound like that, Its a more throatier sound, like a revving sound but the rpms stay the same). Could it be the oil pump? Oil pressure is always good at 40 psi. It always makes this noise at start up; sometimes longer and louder then other times. Once on, the idle is around 600rpm which is low but once I rev it up it idles at 800rpm's. Only on start up does it idle low. I was thinking of replacing the shift interrupter switch(3 years old) but I am not sure that the switch is the problem. I am planning on changing the spark plugs, hopefully that will help. There just under 6 months old.
What else could it be?
Also I have noticed white smoke coming from the exhaust. Very little amount just enough to see then disappear.
Other than that everything runs normal.
Please help.
I have been having a problem with the engine stalling when shifting out of gear into neutral. Once it stalls it doesn't want to start back up. After a few minutes of trying it will usually start back up. When it finally starts up it sound like a pump or something in the engine is running and it is loud, but it goes away after a few seconds. It is sort of a metal sound (I was thinking the ring gear was worn and that could be the sound but it doesn't sound like that, Its a more throatier sound, like a revving sound but the rpms stay the same). Could it be the oil pump? Oil pressure is always good at 40 psi. It always makes this noise at start up; sometimes longer and louder then other times. Once on, the idle is around 600rpm which is low but once I rev it up it idles at 800rpm's. Only on start up does it idle low. I was thinking of replacing the shift interrupter switch(3 years old) but I am not sure that the switch is the problem. I am planning on changing the spark plugs, hopefully that will help. There just under 6 months old.
What else could it be?
Also I have noticed white smoke coming from the exhaust. Very little amount just enough to see then disappear.
Other than that everything runs normal.
Please help.
