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

1,225

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.

1,225

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.

1,225

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

1,225

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

Your Answer

Add photo

Related Questions

  • 4.3 l Vortec wont start 1 answer

    i have a 2002 S-10 with a 4.3 vortec engine new ecm ingnitioncontrol module crank sensor i even have a new fuel pump recently had to change the right head just put the engine back together drove it to...

    2002 Chevrolet S-10 3 Dr STD Extended Cab SB

    -

    Maintenance & Repair

  • 2000 chevy blazer 4.3 10 answers

    While warming up the 2000 Chevy Blazer 4.3 Vortec after about 10 minutes I got in gave it a little throttle Gas and it abruptly died and would not start again there is no spark and when trying to ...

    2000 Chevrolet Blazer

    -

    Maintenance & Repair

  • 1994 GMC SIERRRA HAVE FUEL AND FIRE WILL NOT START RAN FINE PARKED FOR 1 WEEK NOW WONT START 5 answers

    HAS THE 4.3 V6 VORTEC ENGINE

    1994 GMC Sierra 1500 C1500 SL Standard Cab LB

    -

    Maintenance & Repair

  • 1999 4.3 misfiring 35 answers

    I'm running out of ideas on a problem with my 99 S10 4.3 The truck will start and idle fine however as soon as you feed a little gas it starts to miss. Giving it even more gas is either covering up th...

    1999 Chevrolet S-10 2 Dr STD Standard Cab LB

    -

    Maintenance & Repair

Shortcuts

Search Maintenance & Repair Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Maintenance & Repair Experts

#1 Tom Demyan
Tom Demyan
Reputation 154,650
#2 FordNut
FordNut
Reputation 105,550
#3 dandyoun
dandyoun
Reputation 86,360
View All