Have spark fire and fuel crank but not start

Asked by May 16, 2017 at 10:37 PM about the 2000 Ford Focus LX

Question type: Maintenance & Repair

Car ran fine got up to go to work and
nothing..replaced spark plug wires, fuel injectors,
timing belt is good. .new fuel rail and sensor a
crank shafts sensor,a relay, ignition coil. New fuel
filter...HELP..been without a car for 4 weeks now
and nobody can seem to figure out what's wrong?!?   

2 Answers

13,110

If an engine has proper fuel mixture , a timed spark and at least 100 psi compression all the laws of physics demand that a combustion must take place ,,, what are you missing?

2 people found this helpful.
81,485

If you're 100% sure you have spark and fuel, it's time to do a compression test. If all cylinders test very low or zero, it's a valve timing problem. HTH. -Jim

1 people found this helpful.

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