What's Hot?!?!
Discussion
After having a cracking morning at Brunters!!!! The car decided to stall and not restart in the 5th lane on the M1 just at the start of the road works in crawling traffic! After pushing the car up the hill to the hard shoulder I went to restart but with no joy!! It sounded like a grinding noise and the engine would not turn over!
Spec of the car
1. GT03 with 19,000 on the clock
2. H&S exhaust
3. BOV
4. Up rated fuel pump and loom
5. Pace intercooler
6. Remap by Trevor
7. Up rated front end cooling
Symptoms
1. The car occasionally stalls once warm, usually when going through town and stopping for traffic lights etc. Not an issue the car normally restarts. Its very rare for the car to do it!
2. The grinding noise has only happened twice, once on Saturday and then again on Sunday (M1). On both occasions it was a hot day and the car had come to a standstill on a hill. The first time I rolled the car back so it was on flat ground and tapped the starter motor and it seemed to do the trick. On Sunday I tried the same but with no joy!!!!
Once the car had been recovered back to the compound and had chance to cool down it restarted and was fine and has been since.
Thoughts on the problem
1. My initial thought that it was the coil of the starter motor sticking when over heating, due to its location
2. a friend said that it could be a fuelling problem (vapour lock) requiring a swirl pot and secondary pump.
Has anyone had similar experiences?? Please help
Ta
Kevin (Nicksy)
Spec of the car
1. GT03 with 19,000 on the clock
2. H&S exhaust
3. BOV
4. Up rated fuel pump and loom
5. Pace intercooler
6. Remap by Trevor
7. Up rated front end cooling
Symptoms
1. The car occasionally stalls once warm, usually when going through town and stopping for traffic lights etc. Not an issue the car normally restarts. Its very rare for the car to do it!
2. The grinding noise has only happened twice, once on Saturday and then again on Sunday (M1). On both occasions it was a hot day and the car had come to a standstill on a hill. The first time I rolled the car back so it was on flat ground and tapped the starter motor and it seemed to do the trick. On Sunday I tried the same but with no joy!!!!
Once the car had been recovered back to the compound and had chance to cool down it restarted and was fine and has been since.
Thoughts on the problem
1. My initial thought that it was the coil of the starter motor sticking when over heating, due to its location
2. a friend said that it could be a fuelling problem (vapour lock) requiring a swirl pot and secondary pump.
Has anyone had similar experiences?? Please help
Ta
Kevin (Nicksy)
Kevin
I think both RobP and myself are having similar problems.
I thought I had cured mine by removing the roll over valve from the fuel tank breather pipe as this was not allowing air into the tank and hence it was causing a vacuum as the fuel was being used up which lead to my car misfiring and eventually stalling and not restarting, but ok when its cooled down or maybe the vacuum had equalised eventually in the tank.Its been fine for a couple of months now but the symptoms re occured on Sunday at brunters and even releasing the breather pipe didnt help.
I have noticed that the breather system does seem restrictive so maybe it causes cavitation / atomisation or the fuel pipe feeding to the pump to be sucked closed when the fuel is hot and is being pumped in copious amounts by the uprated pumps ?
Rob has reported that he has had these pipes replaced so hopefully he can pass on his findings.
Mine is normally ok straight away if I put more fuel in which I guess cools the fuel temp down in the tank.The down side to big pumps is that they pump way too much when the engine is at low loads so fuel is being continuously returned to the tank but as its pumped (compressed) it warms up and this is compounded by heat soak of the ally fuel tank.
I hope one of us gets to the bottom of this soon.
Steve
I think both RobP and myself are having similar problems.
I thought I had cured mine by removing the roll over valve from the fuel tank breather pipe as this was not allowing air into the tank and hence it was causing a vacuum as the fuel was being used up which lead to my car misfiring and eventually stalling and not restarting, but ok when its cooled down or maybe the vacuum had equalised eventually in the tank.Its been fine for a couple of months now but the symptoms re occured on Sunday at brunters and even releasing the breather pipe didnt help.
I have noticed that the breather system does seem restrictive so maybe it causes cavitation / atomisation or the fuel pipe feeding to the pump to be sucked closed when the fuel is hot and is being pumped in copious amounts by the uprated pumps ?
Rob has reported that he has had these pipes replaced so hopefully he can pass on his findings.
Mine is normally ok straight away if I put more fuel in which I guess cools the fuel temp down in the tank.The down side to big pumps is that they pump way too much when the engine is at low loads so fuel is being continuously returned to the tank but as its pumped (compressed) it warms up and this is compounded by heat soak of the ally fuel tank.
I hope one of us gets to the bottom of this soon.
Steve
Gassing Station | Noble | Top of Page | What's New | My Stuff