hard start problem
Thread Starter
Drifting
Joined: Jan 2002
Posts: 1,606
Likes: 1
From: Las Cruces NM
hard start problem
Whether the car is warm or cold, i can't get it started unless I give it a little gas at startup. I pulled a maf low voltage code before, but I replaced the maf and the code's gone, but the problem's the same. The car runs very well once started and after a few minutes, I can drive it normally.
I just put new spark plugs in. The old ones had a whiteish coating on the electrodes.
I've pulled no codes since I reset the computer last night when I swapped out the maf. Usually the car's hard to start when I reset the ecm, but it used to go away after a startup or two.
I checked the vacuum lines and all looks well there, I did find one line unplugged, but it may have been from when I was digging around by the throttle body checking the lines. Either way, it made no difference on the condition.
The fuel pressure is good, both at idle, w/ the motor off and the system pressurized and with the car running at diff rpm. The fuel pump comes on and pressurizes the system when I turn the key.
All the plugs are firing. To what intensity, I don't know for sure, but I used a spark tester to see if they were firing. The wires and cap are fairly new, less than 15k miles.
The car runs smoother with the new maf, but it still wants to be a pita to start.
I'm baffled as to what it could be. It can't be the cold start injector, since it does it whether the car's warmed up or ice cold.
I guess the only thing I didn't check was the injectors. But they're fairly new too.
Any ideas?
Chris
I just put new spark plugs in. The old ones had a whiteish coating on the electrodes.
I've pulled no codes since I reset the computer last night when I swapped out the maf. Usually the car's hard to start when I reset the ecm, but it used to go away after a startup or two.
I checked the vacuum lines and all looks well there, I did find one line unplugged, but it may have been from when I was digging around by the throttle body checking the lines. Either way, it made no difference on the condition.
The fuel pressure is good, both at idle, w/ the motor off and the system pressurized and with the car running at diff rpm. The fuel pump comes on and pressurizes the system when I turn the key.
All the plugs are firing. To what intensity, I don't know for sure, but I used a spark tester to see if they were firing. The wires and cap are fairly new, less than 15k miles.
The car runs smoother with the new maf, but it still wants to be a pita to start.
I'm baffled as to what it could be. It can't be the cold start injector, since it does it whether the car's warmed up or ice cold.
I guess the only thing I didn't check was the injectors. But they're fairly new too.
Any ideas?
Chris
Pro
Joined: Feb 2002
Posts: 565
Likes: 2
From: Chandler AZ
Re: hard start problem (okinawa86vette)
I don't know how your car is compared to mine (94) but I was having a problem like this. Unplugged the vacuum line to the fuel pressure regulator and fuel was coming out the nipple (can I say that on the forum, oops to late). Replaced the fuel reg. and starts like it should. Just a thought. Robert :smash:
Thread Starter
Drifting
Joined: Jan 2002
Posts: 1,606
Likes: 1
From: Las Cruces NM
Re: hard start problem (rspvette)
I'll have to check that line. I hope it's that, cause it'll give me a good excuse to change from an accel afpr to the really nice holley one. Its just funny that it runs so well once its running.
I was playing with it tonight and it seems if I touch the gas a little, it'll start right up.
Its deff worth a try. Thanks for the idea.
Chris
[Modified by okinawa86vette, 9:58 PM 3/1/2004]
I was playing with it tonight and it seems if I touch the gas a little, it'll start right up.
Its deff worth a try. Thanks for the idea.
Chris
[Modified by okinawa86vette, 9:58 PM 3/1/2004]
