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Old 04-18-2013, 07:28 PM   #1
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Misfire issues

So ever since I went to the track on Sunday I've been having misfire issues on cylinders 5 and 6. I blew a spark plug on cylinder 6 and replaced all of those. I tried switching coil packs and the issue stayed with those two cylinders. I put a screwdriver on the injectors and could hear them ticking as well. There are no codes at all so I'm pretty much at a loss. Any help is greatly appreciated. I'm going to double check my spark plugs tonight just for peace of mind.
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Old 04-18-2013, 09:01 PM   #2
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Melted corroded or damaged wires maybe ?
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Old 04-18-2013, 09:39 PM   #3
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From what I can see the wires look fine. I pulled the spark plugs and the spark plug from cylinder 5 doesn't look to have been fired at all. I can't get to it until tomorrow night but I'm gonna grab a test light and try to test the coil packs to see if they are getting any sort of signal to them
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Old 04-18-2013, 09:43 PM   #4
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Just an idea. You could run it at night and look at the engine to see if the spark is arcing off the engine block somewhere. Possibly if you missed fried wire Do you have a multimeter ?
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Old 04-18-2013, 10:04 PM   #5
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Yeah I've got a multimeter. I've gotta heli-coil my spark plug again first because the first one didn't hold unfortunately. When I get off work I'll go check all my wires to see if they are fried or anything
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Old 04-24-2013, 05:30 PM   #6
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Well I finally got a code out of the car. It's a P0306 if I remember correctly, cylinder 6 misfire. Any suggestions as to how to go about it?
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Old 04-25-2013, 05:24 AM   #7
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Most likely the coil is shot. They are around 40 I believe at any parts store or junkyard for like 10-15. . Check if the spark plug is good first and gapped correctly.
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Old 04-25-2013, 05:45 AM   #8
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Quote:
Originally Posted by JDF
Yeah I've got a multimeter. I've gotta heli-coil my spark plug again first because the first one didn't hold unfortunately. When I get off work I'll go check all my wires to see if they are fried or anything
Get some green lock tite for the heli coil. It's expensive but It's permanent .
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Old 04-25-2013, 09:33 AM   #9
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Most likely the coil is shot. They are around 40 I believe at any parts store or junkyard for like 10-15. . Check if the spark plug is good first and gapped correctly.
I've got a spare coil laying around that I can try.
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Get some green lock tite for the heli coil. It's expensive but It's permanent .
I'll have to see if I can find any. I've just been using high temp RTV silicone.
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Old 04-25-2013, 09:59 AM   #10
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The green loc tite is for industrial use, so it will be hard to find. At a minimum use red, silicone will not work.
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Old 04-25-2013, 10:03 AM   #11
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The green loc tite is for industrial use, so it will be hard to find. At a minimum use red, silicone will not work.
Alright I'll look out for that. I was just going off what the heli-coil package said to do.
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Old 04-27-2013, 09:37 PM   #12
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Well I've been pretty busy this week but I finally got my hands on a compression tester so I should be able to get that done tomorrow. I may toss a new spark plug in there just to make sure it isn't just a bad plug. A google search doesn't really show any promising fixes unfortunately. I noticed that it runs rougher when I run to my stock tune compared to when I run any of my Bama tunes. Running the stock tune nus also how I managed to get a check engine light.
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Old 04-28-2013, 08:18 PM   #13
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Found it! Somehow the gap on the cylinder 6 spark plug closed up on me. It worked its way down to a .046 gap when it should be at. 054-.056. I'm still having a slight bogging issue but new O2 sensors should fix that.
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Old 05-04-2013, 11:09 AM   #14
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I'm at where you are I did at DIY o2 delete by soldering in a resister and capacitor I found in an old threes but am now getting a check engine light saying both front o2 are heated. Went away and came back after a premium fill up. I'm guessing I didn't insulate the wires correctly
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