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Old Jun 16, 2015 | 09:39 AM
  #11  
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Well, it's either spark or fuel. Definitely check plugs, cables, etc. Coil pack is definitely a possibility. Pulling the plug wires one at a time isn't a bad idea either. You definitely want to diagnose the problem before you start throwing parts at it.
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Old Jun 16, 2015 | 09:43 AM
  #12  
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Originally Posted by ExcelerateRep
Well, it's either spark or fuel. Definitely check plugs, cables, etc. Coil pack is definitely a possibility. Pulling the plug wires one at a time isn't a bad idea either. You definitely want to diagnose the problem before you start throwing parts at it.
Of course. I bought the plugs as a precaution.
I plan on changing the plugs (need it anyway)
Pulling coil pack wire to see if any are bad
And PnP injector wire troubleshoot also
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Old Jun 16, 2015 | 02:36 PM
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Be good to see what the plugs look like. Symptoms sound like spark blow out to me. What is the gap set for? Sometimes you could be at the threshold of spark blow out, but won’t manifest itself until a condition changes, such as warmer ambient temps for example causing a bit richer a/f. Plug wear can cause this as well. Several things can.
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Old Jun 16, 2015 | 04:11 PM
  #14  
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I don't know what the gap is set at but I have a feeling that's the cause.
UPDATE: checked PnP injector wiring. They're al good. Whenever I pull one it turns into a boxer engine same with all four. Next going to check the coils then spark plug replace.
It's not happening at low rpm anymore now. Is just happening under boost.
Any more opinions?
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Old Jun 17, 2015 | 05:15 AM
  #15  
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Junky could be right with the spark blow out if its only happening under boost. Be sure to gap the new plugs correctly and swap em to see if it solves the issue.
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Old Jun 17, 2015 | 09:43 AM
  #16  
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Originally Posted by s2000Junky
Be good to see what the plugs look like. Symptoms sound like spark blow out to me. What is the gap set for? Sometimes you could be at the threshold of spark blow out, but won’t manifest itself until a condition changes, such as warmer ambient temps for example causing a bit richer a/f. Plug wear can cause this as well. Several things can.

I'd ditch the pnp cables regardless and my money is on plugs and gap. Or the wiring is intermittently faulty. Those things are crap spend the time and change them.
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Old Jun 17, 2015 | 10:17 AM
  #17  
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Originally Posted by RZA
I don't know what the gap is set at but I have a feeling that's the cause.
UPDATE: checked PnP injector wiring. They're al good. Whenever I pull one it turns into a boxer engine same with all four. Next going to check the coils then spark plug replace.
It's not happening at low rpm anymore now. Is just happening under boost.
Any more opinions?
Get a gapper tool if you don’t have one, check what it is on current plugs and check back. Unless the plugs for some reason are a complete mess, you should be able to re gap them and solve the issue if its indeed blow out. 0.25-028 is a general place for a 400-450whp+ set up. and you could start at 0.20 to troubleshoot the problem and gap up from there if its alleviated. You generally want to run as large a gap as you can without experiencing spark blow out for the most efficient combustion, but you want a little headroom to avoid issues like this as your plugs wear.
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Old Jun 17, 2015 | 10:57 AM
  #18  
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Originally Posted by s2000Junky
Originally Posted by RZA' timestamp='1434499906' post='23650638
I don't know what the gap is set at but I have a feeling that's the cause.
UPDATE: checked PnP injector wiring. They're al good. Whenever I pull one it turns into a boxer engine same with all four. Next going to check the coils then spark plug replace.
It's not happening at low rpm anymore now. Is just happening under boost.
Any more opinions?
Get a gapper tool if you don’t have one, check what it is on current plugs and check back. Unless the plugs for some reason are a complete mess, you should be able to re gap them and solve the issue if its indeed blow out. 0.25-028 is a general place for a 400-450whp+ set up. and you could start at 0.20 to troubleshoot the problem and gap up from there if its alleviated. You generally want to run as large a gap as you can without experiencing spark blow out for the most efficient combustion, but you want a little headroom to avoid issues like this as your plugs wear.
Thank you. I am replacing them today. I gapped them to .20 last night so hopefully it'll be the issue.
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Old Jun 17, 2015 | 11:21 AM
  #19  
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Originally Posted by RZA
Originally Posted by s2000Junky' timestamp='1434565062' post='23651483
[quote name='RZA' timestamp='1434499906' post='23650638']
I don't know what the gap is set at but I have a feeling that's the cause.
UPDATE: checked PnP injector wiring. They're al good. Whenever I pull one it turns into a boxer engine same with all four. Next going to check the coils then spark plug replace.
It's not happening at low rpm anymore now. Is just happening under boost.
Any more opinions?
Get a gapper tool if you don’t have one, check what it is on current plugs and check back. Unless the plugs for some reason are a complete mess, you should be able to re gap them and solve the issue if its indeed blow out. 0.25-028 is a general place for a 400-450whp+ set up. and you could start at 0.20 to troubleshoot the problem and gap up from there if its alleviated. You generally want to run as large a gap as you can without experiencing spark blow out for the most efficient combustion, but you want a little headroom to avoid issues like this as your plugs wear.
Thank you. I am replacing them today. I gapped them to .20 last night so hopefully it'll be the issue.
[/quote]

Good, keep us posted
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Old Jun 18, 2015 | 10:01 PM
  #20  
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Originally Posted by s2000Junky
Originally Posted by RZA' timestamp='1434567450' post='23651528
[quote name='s2000Junky' timestamp='1434565062' post='23651483']
[quote name='RZA' timestamp='1434499906' post='23650638']
I don't know what the gap is set at but I have a feeling that's the cause.
UPDATE: checked PnP injector wiring. They're al good. Whenever I pull one it turns into a boxer engine same with all four. Next going to check the coils then spark plug replace.
It's not happening at low rpm anymore now. Is just happening under boost.
Any more opinions?
Get a gapper tool if you don’t have one, check what it is on current plugs and check back. Unless the plugs for some reason are a complete mess, you should be able to re gap them and solve the issue if its indeed blow out. 0.25-028 is a general place for a 400-450whp+ set up. and you could start at 0.20 to troubleshoot the problem and gap up from there if its alleviated. You generally want to run as large a gap as you can without experiencing spark blow out for the most efficient combustion, but you want a little headroom to avoid issues like this as your plugs wear.
Thank you. I am replacing them today. I gapped them to .20 last night so hopefully it'll be the issue.
[/quote]

Good, keep us posted
[/quote]
Update:
So I changed the plugs tonight. All gapper to .20. And is still breaking up under acceleration.
I've checked the PnP injector cables. Everyone I pull affects the idle so those are good. And it's not the plugs.
What else could it be? Coil packs maybe? Any other suggestions?
What's happening: breaking up under acceleration, seeming rough idle from the exhaust but the motor sounds okay? Just like pops softly from the exhaust. Replaced spark plugs and checked injextor PnP cables. I need help lol
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