WeGotMud

Projects & Parts => Garage/Tech => Topic started by: d.a.m on November 15, 2011, 08:37:14 PM

Title: truck keep backfiring
Post by: d.a.m on November 15, 2011, 08:37:14 PM
it a chevy 350 throttle body  motor ran great sat for a few month it idle great starts rite up but when i put it in gear and give some gas start popping new plugs wire cap rotor timing good firing order rite
Title: Re: truck keep backfiring
Post by: paul on November 15, 2011, 10:01:09 PM
tune up? sounds like there might be condensation under the cap

Title: Re: truck keep backfiring
Post by: J.C. on November 15, 2011, 11:32:11 PM
Did you time it at zero with the wire unplugged
Title: Re: truck keep backfiring
Post by: Jjay78 on November 16, 2011, 03:56:58 AM
 fuel get water in it??
Title: Re: truck keep backfiring
Post by: d.a.m on November 16, 2011, 01:06:47 PM
Quote from: J.C. on November 15, 2011, 11:32:11 PM
Did you time it at zero with the wire unplugged
no
Title: Re: truck keep backfiring
Post by: J.C. on November 16, 2011, 01:16:45 PM
there is a tan wire with a black stripe, that has a connector you need to unplug first. thats the ESC, electonic spark control. the plug should be close to the distributor, since the tan/black wire goes into it. just unplug that, set timing at 0*, then plug that wire back in.
Title: Re: truck keep backfiring
Post by: KORNBREAD on November 17, 2011, 12:50:51 PM
Quote from: Jjay78 on November 16, 2011, 03:56:58 AM
fuel get water in it??

most the time thats what happens. Member on here a while back had issues with stuff like that, tried everything people on here could think of and turned out his truck had water in the tank. 
Title: Re: truck keep backfiring
Post by: d.a.m on November 18, 2011, 05:28:19 PM
i drained the gas tank, but Im going to try messing with the tan wire and see what happens, thanks for the help guys
Title: Re: truck keep backfiring
Post by: ToughBowtieTruck on November 22, 2011, 02:19:10 AM
Quote from: J.C. on November 16, 2011, 01:16:45 PM
there is a tan wire with a black stripe, that has a connector you need to unplug first. thats the ESC, electonic spark control. the plug should be close to the distributor, since the tan/black wire goes into it. just unplug that, set timing at 0*, then plug that wire back in.

Some trucks depending on the year have this connector taped onto the harness near the computer, behind/under the glove box area.
Title: Re: truck keep backfiring
Post by: Colorado on November 22, 2011, 04:27:37 AM
This is exactly what my Blazer is doin. '92 4.3 vortec......