Problem engine hard to start when hot
Thread Starter
3rd Gear
Joined: Dec 2008
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From: ALENCON
Problem engine hard to start when hot
Hello,
I am Oliver a french corvettiste!and i write today because i have a problem with my corvette 1985,the engine hard to start when hot if i re-start immediatly it's ok but after 10-15 minutes,it's more difficult why?
thanks for your answer and sorry because i don't speak english very good
Olivier
I am Oliver a french corvettiste!and i write today because i have a problem with my corvette 1985,the engine hard to start when hot if i re-start immediatly it's ok but after 10-15 minutes,it's more difficult why?
thanks for your answer and sorry because i don't speak english very good
Olivier
Pro
Joined: Dec 2008
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From: Lubbock for now, headed for Oklahoma
Or a leaking fuel pressure regulator(starting to sound like a broken record). They tend to rupture the diaphragms and let the vacuum source draw fuel into the intake. Pull the vacuum line, plug the intake side, and start it a few times. You should see the quick restart return and no doubt some fuel from the vacuum line connected to the regulator.
G/L
G/L
Le Mans Master
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From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
Cruise-In III Veteran
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St. Jude Donor '12
its one of those two things. Do a search and you'll find a procedure to check if it is your fuel pressure regulator.
Take an ohm-meter to yout injectors hot and cold and post the readings. We'll let you know if they are bad. Check with Jon at FIC and see what a set of injectors shipped to you would cost.
Take an ohm-meter to yout injectors hot and cold and post the readings. We'll let you know if they are bad. Check with Jon at FIC and see what a set of injectors shipped to you would cost.
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Thread Starter
3rd Gear
Joined: Dec 2008
Posts: 3
Likes: 0
From: ALENCON
i verify fuel pressure and it's good.the problem is just when the engine is hot,if i re-start immediatly,engine start good but after about 15 minutes,engine run normally but hard start.
just a little precision for the checking of the injectors,it's necessary to take apart each injector?
thank you for your attention.
just a little precision for the checking of the injectors,it's necessary to take apart each injector?
thank you for your attention.
Pro
Joined: Dec 2008
Posts: 658
Likes: 0
From: Lubbock for now, headed for Oklahoma
i verify fuel pressure and it's good.the problem is just when the engine is hot,if i re-start immediatly,engine start good but after about 15 minutes,engine run normally but hard start.
just a little precision for the checking of the injectors,it's necessary to take apart each injector?
thank you for your attention.
just a little precision for the checking of the injectors,it's necessary to take apart each injector?
thank you for your attention.
No you can see if the injectors are leaking if you leave your fuel pressure gauge connected after shutting the car off. If the gauge continues to drop then you most likely have a leaking injector. Considering how long it needs to sit before being hard to restart, I would say leave it for 10-20 minutes and see how much pressure you have lost.
Did you pull the vacuum line off of your fuel pressure regulator, plug the line and start the car a few times? I realize you may need to run it for a bit and then leave it to try this. Checking the nipple on the pressure regulator for fuel is a quick way, but not always a sure thing.
