Whoa! this is ugly!
12-24-2001, 12:36 PM
#1
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Whoa! this is ugly!
I pulled the plugs from my g/f's 93 GS-R (150k miles, bad #4 oil ring), this is what I pulled out of #4
Pardon the quality, it slowly getting dark out so i'm battling with light. Anyways, Is that ugly or what!? The electrode is cracked with a chunk missing, the upper electrode/arc has alot of deposits on it with a little damage also and the whole thing is black. Not oily to the touch, but i'm sure this has to do with the fact that the #4 oil ring is all but gone. I also did a compression test on it today:
145 170 185 190
According to the shop manual, it should have 184psi with a minimum of 135psi and a max. variation of 28psi. Looks like #4 is gone, #3 is on the way out, while #1 & 2 are still in decent shape.. I never new oil could cause so much detonation!
Pardon the quality, it slowly getting dark out so i'm battling with light. Anyways, Is that ugly or what!? The electrode is cracked with a chunk missing, the upper electrode/arc has alot of deposits on it with a little damage also and the whole thing is black. Not oily to the touch, but i'm sure this has to do with the fact that the #4 oil ring is all but gone. I also did a compression test on it today:
145 170 185 190
According to the shop manual, it should have 184psi with a minimum of 135psi and a max. variation of 28psi. Looks like #4 is gone, #3 is on the way out, while #1 & 2 are still in decent shape.. I never new oil could cause so much detonation!
12-24-2001, 01:10 PM
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Re: Whoa! this is ugly! (VTC_CiViC)
My Mustang eats plugs alive... in the #7 cylinder... it's BAD. missing electrodes completely, breaking ceramics... All because of some crappy rings or valve seals <haven't wasted time to find out which yet> 
12-24-2001, 06:23 PM
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Re: Whoa! this is ugly! (MugenSi00)
Ouch Dave!! That **** looks straight out of the ngk site as a demo for a mechanical failure!! 
.. Good thing you took it out nowthan later but I hope not to late.
Nick
.. Good thing you took it out nowthan later but I hope not to late.Nick
12-25-2001, 05:44 AM
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Re: Whoa! this is ugly! (boost killz)
lol -- speaking of compression tests... I watched a compression test being done on someone I kno's itr, and the numbers were like 100 75 76 45 r something like that
LMAO! Cant be as bad as that!
[Modified by TheFLY, 2:44 PM 12/25/2001]
LMAO! Cant be as bad as that!
[Modified by TheFLY, 2:44 PM 12/25/2001]
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