# 3 Miss Fire
10-30-2007, 08:59 AM
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# 3 Miss Fire I get more help from the Texas forum than any other forum on LS1 tech.....GO TEXAS.......Got a # 3 miss fire..Just changed the plugs... One step colder for the spray...I am going to swap in the old plug with an OE wire hope that fixes it. What should i look at next The coil, intake, ?????????
10-30-2007, 09:51 AM
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What is it with misfires around here. That is the 3rd on I have heard of on an fbody within the last couple of months. My guess is going to be a plug wire. The odds of you having a bad coil is pretty slim. Give me a call if you need anything.
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10-30-2007, 08:09 PM
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I had a similar issue at one time. I replaced plug, wire, and swapped coil. Nothing fixed it. I kept driving it but ordered a new set of injectors. In the mean time I started running Chevron fuel and using injector cleaner and sure enough it went away. Kinda weird but it worked.
10-30-2007, 08:44 PM
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mine has had this too. First time I changed the wires and it went away for a while. Now its back, plugs are good had them checked. Car runs fine but back fires bad when cold and flashes the coded when left at a steady speed in 6th other than that its fine the code will just stay on or even go away at times. Dont have a clue either. I had the dealer check it out and told me that i had low compression, changed the heads thinking it might be a valvetrain problem but the code remains so I dont know. Let me know if anything works!
10-30-2007, 09:02 PM
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I had misfires on #6 and #8 on my truck and tried swapping stuff around too. Nothing worked. Turns out it was a bad fuel pressure regulator. If the fuel pressure is off, it will cause misfires.
Is it misfiring all the time? Or just at idle? Mine would only misfire at idle.
Is it misfiring all the time? Or just at idle? Mine would only misfire at idle.
10-30-2007, 10:28 PM
#11
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I had misfires on #6 and #8 on my truck and tried swapping stuff around too. Nothing worked. Turns out it was a bad fuel pressure regulator. If the fuel pressure is off, it will cause misfires.
Is it misfiring all the time? Or just at idle? Mine would only misfire at idle.
Is it misfiring all the time? Or just at idle? Mine would only misfire at idle.
11-04-2007, 11:15 AM
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Add more blinker fuild....and a new motor for that 200k one you have...or just start running on straight spray and dont add any fuel..im sure it wont hurt anything...