I have a c230 compressor that after driving and letting set for approx 1 hr the car at times will not start. No fuel pressure in the fuel rail Today I messed with the fuel pump relay in the trunk walked away for 20 minutes came back out and it started and ran fine. Not sure what to check as it all of a sudden starts. Thanks in advance for any help
Car has 143000 miles on it Just bought so no history.....