weird little issue..
06-03-2010 | 03:25 PM
#1
weird little issue.. ok swapped my plugs over for colder ones due to the n20 install(not done yet with the install)
put in 3177's BR6ef's with my msd wires that are about 500 old..plugs gapped at .035
now ever since car has a slight surge on coastdown and some other times... any ideas really? logs look pretty normal, but couldnt get it to act up when logging but did it a few times last night..
slighty rougher idle but barly(expected this)
never did this before the plug swap
put in 3177's BR6ef's with my msd wires that are about 500 old..plugs gapped at .035
now ever since car has a slight surge on coastdown and some other times... any ideas really? logs look pretty normal, but couldnt get it to act up when logging but did it a few times last night..
slighty rougher idle but barly(expected this)
never did this before the plug swap
06-04-2010 | 12:50 PM
#2
no one? i logged it and was getting some misfire counts under different loads (not wot) got up to a 24 count but mostly 2-12 counts..
should i close the gap up? ill prob pull the plugs when i get home and have a look see
should i close the gap up? ill prob pull the plugs when i get home and have a look see
06-04-2010 | 09:19 PM
#4
ok swapped my plugs over for colder ones due to the n20 install(not done yet with the install)
put in 3177's BR6ef's with my msd wires that are about 500 old..plugs gapped at .035
now ever since car has a slight surge on coastdown and some other times... any ideas really? logs look pretty normal, but couldnt get it to act up when logging but did it a few times last night..
slighty rougher idle but barly(expected this)
never did this before the plug swap
put in 3177's BR6ef's with my msd wires that are about 500 old..plugs gapped at .035
now ever since car has a slight surge on coastdown and some other times... any ideas really? logs look pretty normal, but couldnt get it to act up when logging but did it a few times last night..
slighty rougher idle but barly(expected this)
never did this before the plug swap
06-04-2010 | 09:27 PM
#5
yea my stock plugs have that black around the base but the electrode is nice clean brown..
06-04-2010 | 09:42 PM
#6
I think the black base is indicative of some problem, perhaps a rich condition or possibly an ignition problem. The heat range is not really cold enough to cause plug temperature fouling unless it is idling for long periods of time.
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06-05-2010 | 04:42 AM
#9
That is certainly consistent with the nice brown tips. But I still do not understand the blackened base, that from you say is found on both the stock and colder plugs. Whatever causes that blackened base is not normal, although it may, or may not, have anything to do with the surging problem at hand.
06-05-2010 | 01:56 PM
#10
Did you replace the stock wires with MSD wires? If so, please put the stock wires back. I can't tell you how many times MSD wires have caused issues with misfires.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
