Quote:
|
Originally Posted by teeja123
I need some info before I take this puppy to the shop. A couple of weeks ago it started not wanting to start - or I would crank it up and then it would die out. After a couple of tries it starts up normally. Now before it use to start up before I could even turn the key all the way. Then yesterday I put it into drive and turned the wheel and it cut off, and now today, I got off of the freeway ramp, and came to a stop and it died. I've also noticed that I'll be driving regularly and the engine surges a bit, or even when getting on the highway it doesn't seem to want to get up to speed. Can anyone help me out?
|
Welcome on your first post on AF.
First thing I would check is the tune up on engine.
How many miles on plugs and fuel and air filter?
Any check engine lights?
Another thing that makes for a hard start is fuel pressure.
Depending on engine size and engine code which you need to post back.
Hard to start cold.
Check cold start fuel pressure.
Check engine running fuel pressure.
Check engine running on the road fuel pressure.
Then shut it off and watch for fast leak down.
Pinch off at rubber part or block off return line and check full pressure.
Later V6 and V8 gm engines should have 60-66 fuel pressure.
Cold start should be 64-65 lbs of pressure.
If you do not have full fuel pressure on a cold start the injectors will not squirt fuel.
Do not leave home without it.
Engine running should be 60-66 lbs pressure depending on engine load.
Full pressure with return pinched off should be 75-85 or more.
And if it has a fast leak down after shut off you have a leak.
Post back fuel pressure readings.
MT