SCHolmes

So i have a bone stock sc400. i recently did a tune up took it out for a test drive ran awesome. went out few hours later to go to the store wouldnt crank. i noticed when i turned my key to the on position i did not hear the fuel pump turn on. so i bypassed the ecu by +b and Fp and she fires up. i changed out the ecu same results switched out the efi fuse and relay still nothing. can anyone shine some light on this i need the car running asap

minus500

iTrader: (1)

Did the car start okay before you did the tune-up?

salimshah

The word 'crank' means spinning ... like the starter motor spins the crankshaft, which moves the pistons.

If the engine is not being spun by the starter, then check the battery, terminals, solenoid and the starter.

Now if the engine does spin with starter, then look for spark, air and fuel and timing.

Salim

SCFactory

iTrader: (2)

Yeah check Alternator and battery.