|
|
|
|
| Author |
|
|
Registered
Join Date: Jan 2005
Location: Canada
Posts: 174
|
car wont start when hot please help?
I finally finished my 911 1973 converted to an exact copy of a 1989 turbo slant nose. I took the car for its first run after storage. I replaced injectors new fuel pump new filters new cis unit, new cap ,rotor, and points. after driving about 15 mins i stopped and it took 2 cranks to start and when it did i had to give it gas like it was flooded. so then i kept going for 15 mins no problems anywere and stopped again. this time 5 mins later tried to start it and it was harder and same symptoms. it started and then stalled when i was reverseing and i heard the pop off valve. then it started and i gave it alot of gas and drove on for 5 mins when i shut it off again. when i came back after 5 mins it didnt want to star at all. just kept turning over like there was no gas but i had a full tank. i could here the fuel pump and the wine from the cdi. then i towed it home and when i got it home about 45 mins later it started up first try. it run like crap till a gave it lots of gas and it ran smooth again. it seemed like the hotter the car got the harder it was to start until it didnt start anymore. please help me i just wanna drive my car for more than one hour.
|
||
09-01-2005, 09:47 PM
|
|
|
Registered
Join Date: Dec 2004
Location: PA
Posts: 1,162
|
Sounds like it's running out of gas. there should be a screen in the fuel tank that could be clogged.What type of fuel system do you have?
|
||
|
09-01-2005, 10:29 PM
|
|
|
Registered
Join Date: Jan 2005
Location: Canada
Posts: 174
|
its electronic with new filter but it only happens when its hot. when its cold there is no problems
|
||
|
09-01-2005, 11:22 PM
|
|
|
Registered
Join Date: Dec 2004
Location: PA
Posts: 1,162
|
Maybe the points need readjusting?
|
||
|
09-02-2005, 12:20 AM
|
|
|
Registered
Join Date: Mar 2004
Location: S.E. Pennsylvania
Posts: 1,967
|
Vapor Lock???
Is your fuel pump located under the car on the passenger side?
__________________
The Fox Carrera |
||
|
09-02-2005, 05:18 AM
|
|
|
Registered
Join Date: Jan 2005
Location: Canada
Posts: 174
|
its located under the car. Why?
|
||
|
09-02-2005, 08:17 AM
|
|
|
RETIRED
|
If it has CIS, most likely the check valve in the head of the fuel pump is letting fuel pressure to bleed off.
Pop the top of the air box off, lift the flapper and crank it....takes two people unless you have L O N G arms....
__________________
1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
||
|
09-02-2005, 08:20 AM
|
|
|
Registered
Join Date: Mar 2004
Location: S.E. Pennsylvania
Posts: 1,967
|
Quote:
There are a few posts that describe how to relocate the fuel pump. I bet it's vapor lock.......
__________________
The Fox Carrera |
||
|
09-02-2005, 10:35 PM
|
|
|
Registered
Join Date: Dec 2004
Location: Novato, CA
Posts: 3,064
|
If the car is still running the CIS injection, the two hot start trouble areas to look at are (as previously mentioned) the fuel pump check valve, and also the fuel accumulator. Search on these and you should get plenty of material. Best,
ianc
__________________
BMW 135i. Nice. Fast. But no 911... "I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79 |
||
|
09-02-2005, 10:49 PM
|
|
|
Registered
Join Date: Jan 2005
Location: Canada
Posts: 174
|
thank you for all your help im gonna go through it one by one.
|
||
|
09-03-2005, 10:25 PM
|
|
Da cab
