View Single Post
Old 07-05-04, 04:28 PM   #9 (permalink)
Howard Jones's Avatar
10 tenths
United States
 
Join Date: Jun 2002
GT40: San Francisco Bay Area California USA
Posts: 1,911
Rep Power: 26 Howard Jones is a jewel in the rough
Re: What might be the problem? Won\'t start when hot!

Simon, Last thing. It is possible but unlikely that the set of contacts inside the key switch that supplies 12V to the coil ckt are going bad. What could happen is as the car runs that set of contacts begin to heat up or even burn slightly and after you turn the car off they remain in a marginal state until they cool down.
I only mention this as a kinda last thing it could be. It can be checked by measuring the voltage at the coil when you do a good morning start and then again when you have your problem. Pretty easy to eliminate. The voltage here should be the same each time if the battery remains contant.

That could also be another sorce for your problem, Battery voltage. Have a look at it just before you turn the key from run to start each time you start the car. Hot or cold. Batterys will act funny when they get very hot. where is it located? Think radiant heat.

Good luck
Howard Jones is offline   Reply With Quote