at 8psi car sounds like a machine gun?

Highlex

New Member
Jul 5, 2009
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Manitoba
Problem was solved by re-gapping spark plugs to .26 and cleaning out the spark plug holes! Car boosts great now :D

Something to note would be after a hard beat down my car idle rough. Car shakes alot like if you tried to text someone while sitting in the car at idle it would be hard due to the shaking. the RPM's stay steady it just seems like the motor is unbalanced maybe due to one cylinder not firing? While this is happening smoke blows from the exhaust. If I rev it up a tad the shaking stops and it seems stable, just when my foot is not on the gas at all the problem occurs. A cylinder misfire at idle?
 

boostin300

New Member
Jul 23, 2009
52
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Las vegas
Happy mod? I contributed to the thread and helped a guy solve his problem. I said I was sorry like 4 times for the TSRM deal. Jeez ..
 

jdub

Official SM Expert: Motor Oil, Lubricants & Fil
SM Expert
Feb 10, 2006
10,730
1
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Valley of the Sun
boostin300;1381228 said:
Happy mod? I contributed to the thread and helped a guy solve his problem. I said I was sorry like 4 times for the TSRM deal. Jeez ..


You know damn well I was not talking about ignition...it was the FP numbers you so thoughtfully provided earlier without reference to the TSRM. My post stands...and, yes I am happy with how you forced me to handle it. You are treading on very thin ice.
 

boostin300

New Member
Jul 23, 2009
52
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Las vegas
Man I said sorry in numerous posts! I was the only one that said gap your plugs down, he did and apparently it fixed his problem!

Really lol, I said I was wrong in two posts and apologized in more than that. Some other dude got heated about the plug gap and said I was posting BS when it really did fix the problem.

If I get an infraction for this post, then there's just something wrong with this forum as I am just logically trying to explain myself and have already apologized numerous times.

Happy boosting op, sorry to mess up your thread.
 

boostin300

New Member
Jul 23, 2009
52
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Las vegas
Good for you. If you ran 12# on the higher gap, your ignition system is more up to spec than his. And I would agree there is another problem, but if that plug gap deal did fix his problem temporarily I think he could at least narrow it down to an ignition problem.

OP how old are your coils? If they're originals I would recommend changing them out or testing someone else's newer ones. Older coils will work but don't have the energy potential of a same spec newer one.

Could be something else but usually lower gap/new coils works well for ignition problems.
 

jdub

Official SM Expert: Motor Oil, Lubricants & Fil
SM Expert
Feb 10, 2006
10,730
1
38
Valley of the Sun
boostin300;1381711 said:
Man I said sorry in numerous posts! I was the only one that said gap your plugs down, he did and apparently it fixed his problem!

Really lol, I said I was wrong in two posts and apologized in more than that. Some other dude got heated about the plug gap and said I was posting BS when it really did fix the problem.

If I get an infraction for this post, then there's just something wrong with this forum as I am just logically trying to explain myself and have already apologized numerous times.

Happy boosting op, sorry to mess up your thread.

It didn't fix the problem...you are giving yourself way too much credit. Poodles is correct, it's a band aid at best.

FYI - it doesn't matter how may times you apologize. You posted the wrong FP numbers in the Tech section...it's a simple as that. The rule is simple...if you are not 100% sure, do not post. For you (due to your attitude) there is zero tolerance for this now. Doesn't really matter what you think.


boostin300;1381956 said:
Good for you. If you ran 12# on the higher gap, your ignition system is more up to spec than his. And I would agree there is another problem, but if that plug gap deal did fix his problem temporarily I think he could at least narrow it down to an ignition problem.

OP how old are your coils? If they're originals I would recommend changing them out or testing someone else's newer ones. Older coils will work but don't have the energy potential of a same spec newer one.

Could be something else but usually lower gap/new coils works well for ignition problems.

The plug gap is not a permanent fix.

Vs swapping out parts randomly, how about testing the coils per the TSRM. Posting general "ideas" are pretty much useless...this type of thing does not belong in Tech either...it's boarder line. Post specifics that will positively ID the problem.
 

Poodles

I play with fire
Jul 22, 2006
16,757
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Fort Worth, TX
boostin300;1381956 said:
Good for you. If you ran 12# on the higher gap, your ignition system is more up to spec than his. And I would agree there is another problem, but if that plug gap deal did fix his problem temporarily I think he could at least narrow it down to an ignition problem.

OP how old are your coils? If they're originals I would recommend changing them out or testing someone else's newer ones. Older coils will work but don't have the energy potential of a same spec newer one.

Could be something else but usually lower gap/new coils works well for ignition problems.

Watch your tone, you're walking a fine line already.
 

boostin300

New Member
Jul 23, 2009
52
0
0
Las vegas
jdub;1382004 said:
It didn't fix the problem...you are giving yourself way too much credit. Poodles is correct, it's a band aid at best.

FYI - it doesn't matter how may times you apologize. You posted the wrong FP numbers in the Tech section...it's a simple as that. The rule is simple...if you are not 100% sure, do not post. For you (due to your attitude) there is zero tolerance for this now. Doesn't really matter what you think.



The plug gap is not a permanent fix.


Vs swapping out parts randomly, how about testing the coils per the TSRM. Posting general "ideas" are pretty much useless...this type of thing does not belong in Tech either...it's boarder line. Post specifics that will positively ID the problem.

For the bolded, did I not exactly say "And I would agree there is another problem, but if that plug gap deal did fix his problem temporarily I think he could at least narrow it down to an ignition problem."?

For the swapping newer coils, a coil can test out perfect resistance per TSRM specs and still not work as well as a newer coil. All I said was to swap coils and see how it works before you go off spending hundreds replacing them. Why not? Coils are easy to change out.

I will not post again if I am not 100% sure. Again, I apologize. I like posting multiple possible solutions because one of them might work. In this case, that worked out alright.
 

boostin300

New Member
Jul 23, 2009
52
0
0
Las vegas
Highlex;1381008 said:
Problem was solved by re-gapping spark plugs to .26 and cleaning out the spark plug holes! Car boosts great now :D

Something to note would be after a hard beat down my car idle rough. Car shakes alot like if you tried to text someone while sitting in the car at idle it would be hard due to the shaking. the RPM's stay steady it just seems like the motor is unbalanced maybe due to one cylinder not firing? While this is happening smoke blows from the exhaust. If I rev it up a tad the shaking stops and it seems stable, just when my foot is not on the gas at all the problem occurs. A cylinder misfire at idle?

Since it only does it when the car is idling, sort of sounds like it isn't getting enough air since when you open the throttle its fine. I don't think it would be a misfire, unless the misfire happened because of not having enough idle air. Reason being if there's no misfires under boost, there shouldn't be one at idle.

Might want to clean out the idle valve in your throttle body if you haven't in a while.
 

IJ.

Grumpy Old Man
Mar 30, 2005
38,728
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I come from a land down under
boostin300;1382082 said:
Since it only does it when the car is idling, sort of sounds like it isn't getting enough air since when you open the throttle its fine. I don't think it would be a misfire, unless the misfire happened because of not having enough idle air. Reason being if there's no misfires under boost, there shouldn't be one at idle.

Might want to clean out the idle valve in your throttle body if you haven't in a while.

Seriously just STFU and go back to SF with your bullshit.... :nono:

HighLex: Check the valve clearences.