I have a 67 Firebird 400. It runs great BUT, when it runs for a bit and reaches operating temperature and then you shut it off and attempt to resstart after it sits for a minute, it will not re-start. There is no fuel and appears to be vapour locked. After it cools down, its starts and drives away. The car seems to run fine until you attempt to re-start it after its sat warm... Any ideas ??
2007-05-26 09:18:13 · 10 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ Pontiac
carb may be dirty and heqads may have carbon deposits.
2007-05-26 09:22:45 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Why do you specify a 451 cubic inch engine? No such length became ever production unit made with the help of any producer. it may seem which you mean a 421 or in line with risk a 455. Neither became made in 1967. available Pontiac automobiles in 1967 have been 4 hundred and 428. Smaller V8s and sixes have been additionally available. Your terrific wager to construct a sixty seven Firebird could be to purchase a Camaro and function a stable physique save convert it to a Firebird. Or purchase one from somebody who has what you elect.
2016-10-06 02:30:51 · answer #2 · answered by puzo 4 · 0⤊ 0⤋
When you say it won't restart, do you mean it won't crank? or it will crank over but not fire up? First condition would be "heat soak" in the starter---wrap the starter or exhaust in header tape to prevent heat from soaking into the starter and expanding the armature which locks it up. Second condition is probably vapor lock...reroute the fuel lines away from any hot engine part or wrap them in heat resistant tape also.
2007-05-27 09:32:40 · answer #3 · answered by paul h 7 · 1⤊ 0⤋
I think it could be your starter getting too hot try putting header wrap around the closest header tube to your starter. I dont like the idea of using a heat shield on your starter because to me it keeps heat in and doesnt let air to the starter, thats why i would wrap the header. You can get that stuff at any parts store and its not too expensive. I dont think it could be vapor lock because the car would spit and sputter at idle when running. Let me know if it works.
2007-05-26 09:32:12 · answer #4 · answered by Anonymous · 0⤊ 0⤋
If you think that it is vapor-locked, then reroute the fuel lines so they aren't so close to the engine or intake manifold. You could also put a heat shield under the fuel line to reflect the heat back at the engine (it would have had one new).
2007-05-26 09:32:59 · answer #5 · answered by Ben H 5 · 0⤊ 0⤋
Your timing is too far advanced or it could be too retarded as both cause a slow ,no crank on restart. Also if ya running too lean on the carb it does the same thing!!! I know cause of "hopping up engines and swapping them out"!
2007-05-26 16:59:27 · answer #6 · answered by Anonymous · 0⤊ 0⤋
this may sound dumb but it is right off of car talk. check your engine cooling system. if the engine is running too hot, it causes gas to vaporize and car acts fuel starved.
another reason they give is the carbon build up on pistons. see attached www. good luck.
2007-05-26 09:38:38 · answer #7 · answered by robert s 5 · 0⤊ 0⤋
go to a good speed shop and get a heat deflector plate , you install it between the manifold and the carb .to keep the heat from evaporating your fuel.
2007-05-27 13:41:29 · answer #8 · answered by sliverhddriver 2 · 0⤊ 0⤋
Get a new fuel pump and filter.
The Rat
2007-05-26 09:27:51 · answer #9 · answered by Anonymous · 0⤊ 0⤋
Ahh yea, I think you need to SELL it to ME.
2007-05-26 09:22:19 · answer #10 · answered by bigbrownie 2 · 0⤊ 0⤋