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1990 944S2 hard starting when warm

Fuel System

Vehicle Information: Model(924/944/968): 944S2; Year: 1990; Body Type: Coupe; Total Mileage: 88,550;

When using the car at noon for errands sometimes the car will not start (car starts at noon, but not after the errand) , the engine turns over normally but will not fire. Sometimes it will start right up other times you may have to keep trying for 5 - 10 minutes, no smell of gas. It starts normally every morning, at noon time and when leaving for home after work. It appears to be possibly heat related as it always starts when cold, except for one very hot (90's) Saturday that I pushed it out of the garage and went to start it hours later, it took a long time to start.

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