weak spark on 2 cylinders lt1
04-21-2013, 09:18 AM
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Car: 91 z28, 07 trailblazer ss
Engine: lt1lt4 hot cam,ls2
Transmission: t56
Axle/Gears: 3.73
weak spark on 2 cylinders lt1
first fire up was this week. yesterday i got.my y pipe hooked up and it sounded great came.back out awhile later and i notice on its next.fire.up it was running.rough. i found two cylinders had a weak spark compared to another spark plug i pulled out. am i looking at getting a new.opti or else?
04-21-2013, 10:09 AM
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Car: 91 RS
Engine: LTwon
Transmission: T-56
Axle/Gears: Both
Re: weak spark on 2 cylinders lt1
Check resistance in your plug wires, or you can switch plug wires to see if the problem stays with the wire or spark plug.
Id also re-check the plug gap.
Id also re-check the plug gap.
04-21-2013, 12:35 PM
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Car: 91 z28, 07 trailblazer ss
Engine: lt1lt4 hot cam,ls2
Transmission: t56
Axle/Gears: 3.73
Re: weak spark on 2 cylinders lt1
Maybe.the.plugs.sucks they are new
04-25-2013, 07:50 AM
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Car: 91 z28, 07 trailblazer ss
Engine: lt1lt4 hot cam,ls2
Transmission: t56
Axle/Gears: 3.73
Re: weak spark on 2 cylinders lt1
Ok so i have moved around my spark plugs and spark plug wires moved my injectors and changed even my opti out to still have the same problem. this lt 1 is about to be thrown out and a 383 carb go in
04-27-2013, 02:48 PM
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Car: 91 z28, 07 trailblazer ss
Engine: lt1lt4 hot cam,ls2
Transmission: t56
Axle/Gears: 3.73
Re: weak spark on 2 cylinders lt1
I got a code p1361 low voltage to control module.anyone get that and what was the fix? i just ordered a new msd coil.do i need a new icm? anyone?
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