Hard starting when warm
Thread Starter
Joined: Aug 2006
Posts: 43
Hard starting when warm
Hey, I seem to have a problem starting my 351 when its warm. It turns over fine when it's cold, but when it's hot, it barely turns over and sometime it just won't turn it over. I had the battery checked and was told it was fine. The batterey, voltage regulator and alternator are new. I was told that my timing could be too advanced so I backed it off. It seemed to work for a day but then it did it again.
Any thoughts?
Any thoughts?
3rd Gear Member
Joined: Dec 2005
Posts: 755
From: North Idaho
RE: Hard starting when warm
Check the timing. If timing is too advanced it will act the way you just described.
edit: I just read the last 2 sentences of your statement. I wastoo anxious to be the one with the answer
edit: I just read the last 2 sentences of your statement. I wastoo anxious to be the one with the answer
I ♥ Acer
Joined: Oct 2004
Posts: 17,565
From:
RE: Hard starting when warm
The next time it happens open the hood and get your ear close to the carburetor. If you hear fuel boiling, then you are suffering vapor lock. Get a 1" phenolic spacer under that carb and make sure your gas lines are not near an exhaust manifold.
Gentleman's Relish
Joined: Feb 2005
Posts: 13,189
From: AZ
RE: Hard starting when warm
ORIGINAL: toolwench
Do you have headers? Your starter might be getting heat-soaked.
Do you have headers? Your starter might be getting heat-soaked.
Vapor Lock is also a possibility but the difficulty in turning over would not be a symptom of this.
I was going to go with an electronic ignition box mounted on or near the distributor that overheats but then that too would not account for the lack of or difficulty in turning over.
I ♥ Acer
Joined: Oct 2004
Posts: 17,565
From:
RE: Hard starting when warm
ORIGINAL: Derf00
Actually, excellent point. Long tubes will most commonly create this scenario. When I used to work auto parts this was one reason. You can get a heat insualtion mat to put over the starter to protect it from heat-soak if that's what it is.
Vapor Lock is also a possibility but the difficulty in turning over would not be a symptom of this.
I was going to go with an electronic ignition box mounted on or near the distributor that overheats but then that too would not account for the lack of or difficulty in turning over.
ORIGINAL: toolwench
Do you have headers? Your starter might be getting heat-soaked.
Do you have headers? Your starter might be getting heat-soaked.
Vapor Lock is also a possibility but the difficulty in turning over would not be a symptom of this.
I was going to go with an electronic ignition box mounted on or near the distributor that overheats but then that too would not account for the lack of or difficulty in turning over.
Thread Starter
Joined: Aug 2006
Posts: 43
RE: Hard starting when warm
Thanks: Yes I have long tubes headers.
It's a Mallory Distributor Ignition.
I will check for Vapour lock.
Ponyx2 How exactly do I test it and what should I get for draw if it is the starter that is pouched??
It's a Mallory Distributor Ignition.
I will check for Vapour lock.
Ponyx2 How exactly do I test it and what should I get for draw if it is the starter that is pouched??