Cold start problem?
Thread Starter
6th Gear
Joined: Mar 2003
Posts: 6
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From: Fresh Meadows NY
Cold start problem?
On an initial start, I have to crank the engine at least 3-4 seconds before it will start. Once it is started it runs fine and starts on the first crank all day, but once the car sits for around 3hours or more,the problem returns. I changed the fuel pump,filter,regulator, injectors are only 3yrs old,egr was also changed. It is an 89 coupe, all stock (this model does not have the cold start injector) Can anyone help diagnose this annoying problem? :auto: :auto:
Team Owner
Joined: Mar 2001
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From: Cincinnati, Oh USA
Re: Cold start problem? (Anotheredvette)
3 year old injectors or not, put a fuel pressure gauge on your fuel rail shraeder valve, turn on the igition for longer than 2 seconds and turn it off. GM says you shouldn't lose more than 1 psi in 30 minutes or you have leaky injectors. Leaky injectors can cause hard starting.
Thread Starter
6th Gear
Joined: Mar 2003
Posts: 6
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From: Fresh Meadows NY
Re: Cold start problem? (jfb)
Thanks for the advice, I put the pressure gauge on and watched the pressure drop from 32-22 in 3min!! after another 1/2hr, it was down to 16lbs!. There are no visible leaks anywhere near the fuel rails etc. Is this a telltale sign of leaking injectors?, if so, is there any way of finding out which ones are bad, other than pulling the plugs and looking for the fouled ones? :confused: :auto:
Team Owner
Joined: Sep 2001
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From: Athens AL
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Re: Cold start problem? (Anotheredvette)
Your injectors are shot, replace them ALL. If one goes bad, the rest are sure to follow.
Try the Ford SVO #24s
Try the Ford SVO #24s
Thread Starter
6th Gear
Joined: Mar 2003
Posts: 6
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From: Fresh Meadows NY
Re: Bad injectors
Vader, you recommend Ford SVO #24s, Can I get them online for a decent price? What can I do to prevent this from happening again? like I said they were only 3yrs old. Could lack of use in the winter have an effect?, the car is stored outside under a cover during the winter months.
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From: North Yorkshire, England
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Re: Bad injectors (Anotheredvette)
Vader,
How can you be so sure it is leaking injectors just from Anotheredvette's post? Injectors are of course, a possibility, but so is a bad check valve or regulator. As jfb is so adamant about encouraging, and I agree completely, you have to eliminate the possibilities before jumping to any conclusions. Without pinching off the fuel supply hose, you don't know if the check valve is allowing fuel to drain back to the tank. Without pinching off the fuel return hose, you can't be sure that the regulator isn't responsible.
How can you be so sure it is leaking injectors just from Anotheredvette's post? Injectors are of course, a possibility, but so is a bad check valve or regulator. As jfb is so adamant about encouraging, and I agree completely, you have to eliminate the possibilities before jumping to any conclusions. Without pinching off the fuel supply hose, you don't know if the check valve is allowing fuel to drain back to the tank. Without pinching off the fuel return hose, you can't be sure that the regulator isn't responsible.
Le Mans Master
Joined: Jun 2002
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From: High Plains Drifter Fayetteville, AR
Re: Bad injectors (Ray Quayle)
Vader,
How can you be so sure it is leaking injectors just from Anotheredvette's post? Injectors are of course, a possibility, but so is a bad check valve or regulator. As jfb is so adamant about encouraging, and I agree completely, you have to eliminate the possibilities before jumping to any conclusions. Without pinching off the fuel supply hose, you don't know if the check valve is allowing fuel to drain back to the tank. Without pinching off the fuel return hose, you can't be sure that the regulator isn't responsible.
How can you be so sure it is leaking injectors just from Anotheredvette's post? Injectors are of course, a possibility, but so is a bad check valve or regulator. As jfb is so adamant about encouraging, and I agree completely, you have to eliminate the possibilities before jumping to any conclusions. Without pinching off the fuel supply hose, you don't know if the check valve is allowing fuel to drain back to the tank. Without pinching off the fuel return hose, you can't be sure that the regulator isn't responsible.
