Cranks with spark and fuel but won't start?

Asked by Dec 31, 2016 at 09:48 PM about the 1990 Jeep Wrangler STD

Question type: Maintenance & Repair

I gavec1990 jeep wrangler with 2.5 . While driving it
sputtered backfired and quit running. Have
checked for spark changed coul. Checked for fuel
getting fuel. Checked timing by aligning tdc and
looking at position of rotor under distributor.  
Correct alignment according to Haynes manual.
Have not checked compression. Just will not start.
What else could be wron?

2 Answers

108,175

Ok you say you have fuel but what is the pressure at rails should be about 38 pounds, did you ohm out the injectors they should be anywhere from 14.2 to 14.4 ohms and when you crank her you should around 5 volts to each. Which jeeps with high miles the chain could stretch and jump a tooth. The compression should be about 130 to 145.

Sorry it's been a,while now since my first question. So it is a throttle body and you can see the fuel pulse when cranked. Still haven't checked compression. I thought about the timing jumping a cog. But no way to adjust time since it is computer controled. When it stop running it really spit and sputtered and backfired then nothing. I changed the coil because the spark I was getting g looked a little orange. New coIL better looking spark but still no run.

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