what can be causing this??? pics of plugs---
05-12-2008, 10:33 AM
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what can be causing this??? pics of plugs---
The other day I was racing a friend's friend at the track which i was supposed to beat, but ended up losing to, then i raced my friend that i am usually neck and neck with and ended up losing to him pretty bad too. No mods had changed on any of the cars, so the next day i check my plugs that i had just changed no more than 5k miles ago, and i found them looking like they were rusted and looks like there might have been oil on the threads or something for some reason. Once i changed them i raced my friend that i am usually neck and neck with and found that i was a bit quicker but still not 100 percent. About 1k later on these new plugs and im feeling a bit sluggish again, going to check them again tommorrow. Any help as to what may be causing this would be appreciated....
BTW all races took place safely at the track.....
thanks in advance!
BTW all races took place safely at the track.....
thanks in advance!
05-12-2008, 11:33 AM
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on that set of plugs i did, but now on these new plugs i havent used any and im feeling the loss of accelaration again. gonna check them later tonight
05-12-2008, 01:13 PM
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http://www.classictruckshop.com/club...park/plugs.htm
good pictures. as for that condition
good pictures. as for that condition
MMT Fouled
APPEARANCE: Spark plugs fouled by MMT (Methycyclopentadienyl Maganese Tricarbonyl) have reddish, rusty appearance on the insulator and side electrode.
CAUSE: MMT is an anti-knock additive in gasoline used to replace lead. During the combustion process, the MMT leaves a reddish deposit on the insulator and side electrode.
RECOMMENDATION: No engine malfunction is indicated and the deposits will not affect plug performance any more than lead deposits (see Ash Deposits). MMT fouled plugs can be cleaned, regapped and reinstalled.
APPEARANCE: Spark plugs fouled by MMT (Methycyclopentadienyl Maganese Tricarbonyl) have reddish, rusty appearance on the insulator and side electrode.
CAUSE: MMT is an anti-knock additive in gasoline used to replace lead. During the combustion process, the MMT leaves a reddish deposit on the insulator and side electrode.
RECOMMENDATION: No engine malfunction is indicated and the deposits will not affect plug performance any more than lead deposits (see Ash Deposits). MMT fouled plugs can be cleaned, regapped and reinstalled.
05-13-2008, 10:35 AM
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took one plug out this morning, just about 1k after installing my new plugs they look like theyre turning the same way. No additives were used with this set of plugs.
btw the irriduim part of the plug is still good, its just hard to tell from the pic because i took it with my phone.
btw the irriduim part of the plug is still good, its just hard to tell from the pic because i took it with my phone.
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05-13-2008, 02:18 PM
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If that plug came out of a boat engine that was saltwater cooled then I would say u have water in the cylinders. But not sure how a plug would get rusty coming out of a car engine.....
05-13-2008, 04:00 PM
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https://my350z.com/forum/showthread....ght=spark+plug
check out blastin's picture and compare to your spark plugs hole
check out blastin's picture and compare to your spark plugs hole
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