2004 Chevrolet Astro "crank start backfire" Questions

van.started fine in the morning put rear brakes on now won't start.fuel pump works.when cranking over backfires through intake.didn't touch any wires when putting on 2004 astro

...van.started fine in the morning put rear brakes on now won't start.fuel pump works.when cranking over backfires through intake.didn't touch any wires when putting on rear br 2004 ...

...start but it backfires with flame.we have already changed the airflow secsor, angle crank censor and camp shaft sensor. It started 3 times but it again is backfiring.what to do. it is a 4g93 lancer ...

...but won't turn over, then occasional very loud backfire Cant get 89 Jeep to start, Cranks over Backfires, but wont turn over... my guess is your timing could be off, or ^, plugs can be gaped ...

...filter but it still won't start. The backfire means that it is a timing issue. The problem is most likely the crank shaft sensor. It tells the computer when the engine pistons are in position to

truck was running great next morning went to start,it cranks & cranks then backfires.Sound like timimg? fuel filter,seemed like I wasn't getting enough gas the backfires occurs in airfilter ...

I have a 1997 gmc sonoma, 2.2L, manual trans. When I try to start it, it usually cranks and locks up like timing is off. It backfires sometimes. Then if it starts, it misses and backfires sometimes. ...

...start backfires sometimes out of air intake. changed coil pack spark plugs/wires fuel filter/regulator map sensor crank sensor icm tested good pcv valve. what do I do? please help!!! have you tried ...

cranks backfires it cranks and then backfires That could be a timing issues when it back fires Why ,no idea,not a question you can guess at as we do here Could also be a vacuum leak & lean fuel ...

...crank on it, it will not even fire,....If I wait the 2 seconds for the fuel pump to stop, it will at least chug( but not start) ! Tapping the key repeatedly for 1/2 an hr or so, is usually the only ...