4.3 not starting

5

Asked by Dec 09, 2014 at 08:12 PM

Question type: Maintenance & Repair

fuel is 57psi at rail. getting spark. hard to believe the duel timing chain broke. did get a
slight attempt at firing once. no codes listed, unhooked battery, unhooked mapp, it has a
new crank sensor( its possible, i know) distributor looked perfect last time i had it out

7 Answers

1,425

i would check compression with a timing chain breaking it is bad news for lifters, valves, push rods, roller rockers, and pistons, And double check your timing on both distributor and crank and cam

5

let me rephrase that. i find it hard to believe the timing chain is the issue. i was going down the road and it just died...im thinking its a bad sensor, but not sure which one i should check.

1,425

is the check engine light on

5

check engine light is not on. i cant really scan it without it running. it threw nothing and stored it before it died, that i could see.

1,425

try this spray a little starting fluid down in it and see if it will fire off of that

5

im not around it now. im just trying to do some research. exhaust smells like fuel, so im unsure if that would do anything. im still leaning torwards a sensor that has somthing to do with timing. usually in my exp, wich isnt a lot, fuel, fire, air, and it should at least hit, unless a sensor is prohibiting it. the chain could be a possibility, but im really doubting it. ive never seen a chain on a 4.3 go quietly. rare occurance when they do. it doesnt even have 100k

1,425

what about fuel pressure regulator is it real rich and potent and are the spark plugs covered with fuel

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