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1983 944 Hot Starting

Fuel System

Vehicle Information: Model(924/944): 944; Year: 1983; Engine (type, size, modifications): 2.5 Stock; Total Mileage: 188,000;

Car is very hard to restart after a short period of time when it is fully warmed up, such as when stopping to refuel. It will eventually start after long periods of cranking. This is a pretty consistent problem. If the car sits longer (perhaps an hour) it usually starts OK. The car is also intermittantly difficult to start cold (probably 15 per cent of the time, but getting worse). The fuel pump is about 4 years old, and the fuel pump relay is new (I have changed the fuel pump relay twice in the last year, once due to a complete failure to start, and once in an effort to fix the hot restart problem). Not sure if this is one problem or two separate ones. What do you think the problem is?

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