Starting Problem
Thread Starter
Pro
Joined: May 2006
Posts: 633
Likes: 2
From: Nampa ID
Starting Problem
K, I have a friend that has a '93 C4 with a no start problem after setting for the winter.
Turn the key on and we hear no pump. Are we supposed to?
With the key on, I pushed the fuel valve release on the rail and only got dribbles at best. Can a relay or fuse be blown here or is the pump gone? I can't find any pressure requirements in FSM. Also what section is the troubleshooting in?
Thanks for any help on this.
Turn the key on and we hear no pump. Are we supposed to?
With the key on, I pushed the fuel valve release on the rail and only got dribbles at best. Can a relay or fuse be blown here or is the pump gone? I can't find any pressure requirements in FSM. Also what section is the troubleshooting in?
Thanks for any help on this.
Le Mans Master
Joined: Jan 2006
Posts: 5,620
Likes: 206
From: Orlando FL
Was the battery charge kept up. Maybe it is almost dead. See if the head lights light brightly for a quick check. Do any of the IP lights look normal?
I would probably start out charging the battery or replacing it for starters.
I would probably start out charging the battery or replacing it for starters.
Thread Starter
Pro
Joined: May 2006
Posts: 633
Likes: 2
From: Nampa ID
The battery is OK. The car turns over good, just won't start. Thanks
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Engines require spark, and spark at the right time, fuel and air and in the correct ratio in order to start and run. So.....use a timing light during cranking to see if you have spark and spark at the right time. While you haven't measured fuel pressure, your test shows you have almost none and no fuel pump noise. Check the fuel pump fuse, not sure on 93's, but on the ALDL socket, you can force the fuel pump on, so try that. If it won't start after you get fuel pressure, then see how long fuel pressure holds after the pump is off, you might have leaky injector/s or a defective fuel filter or check valve. Get a noid light ( or an LED and a series 680 ohm resistor) and see if the injectors are being pulsed during cranking.
