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High boost misfire. Help

Old Jul 7, 2012 | 06:58 PM
  #21  
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Originally Posted by lglowe
Have you tried running it yet? To see if it fixed it?
Thats what I was wondering.
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Old Jul 7, 2012 | 07:41 PM
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It was raining while I was finishing. Gonna let the road dry a bit then go try it out.
I'll post up when I do
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Old Jul 8, 2012 | 01:45 AM
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Well the cut out is gone now from what I can tell. But it needs a tune bad. Idle is very lean now and like to die. Cruising is lean too. Do I need to add fuel or is it not burning it and need to take away?
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Old Jul 8, 2012 | 06:33 AM
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How lean? Whats the AFR when you get on it?
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Old Jul 8, 2012 | 10:52 AM
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Afr wot seemed good. But at idle it pegging my gauge @ 16:1. I'll have to look at the log later tonight and see what it all really looked like. I didn't get a chance to go through it. I'll do that and post the spark plug pics tonight. Got to mow and go take kids to play at pool today.
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Old Jul 9, 2012 | 07:05 PM
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Old Jul 9, 2012 | 07:27 PM
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i looked at the log. it was a bust. i didn't have the right config loaded. but, there was no KR. i don't think the motor likes the plugs. my far has been good for two years plus. now all the sudden its sky high and nearly idles and part throttle is high as hell too. this tells me that its wasting fuel and not burning it all. my mileage seemed to be way down driving around also.

here is what i think and see if you guys would agree. about a week ago i was racing a friend. during the race i noticed my meth light went out. turns out it had been out the whole race. it ran fine but was down on power. come to find out the boost reference line cracked and blew off. which took out my high boost reference and made a boost leak.
once i got home and found the hose and fixed it everything in low boost was back to normal. but i think during that run it burned up the plugs. not to mention they were old as hell.

when i went wot after the plug swap it just didn't seem to pull like it use too. it didn't stutter or anything. high boost now feels like low boost before the plug swap.
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Old Jul 9, 2012 | 08:44 PM
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I swapped in br7ef's from tr6's and noticed this "lack of power feeling" that you are describing. I went back to the tr6's. They are doing fine at 12 pounds.
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Old Jul 9, 2012 | 08:58 PM
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If you are going back to 6's then use a BR6EF, you have meth? Those plugs look like ****, check the gap on them and see what it is. I am running BR6EF's at 12psi w/meth
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Old Jul 9, 2012 | 08:59 PM
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I am really curious now what your AFR does if you switch back to a BR6EF and dont change anything else.
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