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Discussion Starter · #1 ·
what would cause coolant to be in the spark plug cylinders....i use to have a misfire in cylinder 5 and i pm'd a few people on what it could be. but then i took it apart and found a bunch of coolant inside were the spark plug coil is. so i had gotten a new coil and spark plug replaced it it was fine. ( i thought i had gotten coolant in there from when i replaced the thermostat. ) then i started getting one in cylinder 8. so i looked and again a bunch of coolant. so i took off the other boots and the same thing but only on cylinders 5-8. what could cause this

thank you
Forest
 

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if its both cylinder banks check the intake for cracks or the intake gaskets. small chance its your head gaskets starting to go but id look at the intake first
 
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Discussion Starter · #4 ·
be careful do not drive it till fixed, don't want to spin a main bearing or rod bearing!
yeah im not drivin it right now. drivin my truck.

i should have gave the symptoms that it had before. after i instaled my o/r H pipe it started acting up. but ONLY when it was warmed up when it was cold it was fine. so i figure maybe O2. so i replaced the front 2 and it was better for about a day then i started getting the misfire in my 5 cylinder P0305 :mad:. once again it would ONLY mis after warming up. and i was like wtf... so i took off the coil found that coolant. and i thought that it was from when i changed out the thermostat. so i took a shop vac sucked out the coolant replaced the coil and the plug. started her up and started ridin around town. then after about 6 mins ( right after warm up ) it started misfireing in cylinder 8 P0308...:mad: and took a look that one also had coolant in it. so i took a look at cylinders 6 and 7 after the car cooled down and they also had coolant not a lot but it was there. :mad:.. .im gettin pissed off at it >.<
 

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hmm, 6,8, & 5 are all on the drivers side head. thats looking like a head gasket. but +1 for checking the manifold for cracks. if its on top of the plug its most likely the manifold gasket or manifold
 
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more than likely it's the manifold gasket, but have you checked the seal on the thermostat or hose clamp? Just a simple guess, but sometimes it's the simple things we overlook. peace
 
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mine was cracked intake. Had this exact same problem.
 
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Discussion Starter · #10 ·
but im taking it apart well.. going to finish taking it apart at the end of today or tommorow.. saddly at work now. so i cant work on my baby.
 

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like i said... i would get the occasional miss with a smell of antifreeze on the plug. When i had my cams installed, the guy called and said "man, you have a cracked intake. Im surprised you are not having a misfire from the coolant leaking down on the plug". Thats when i told him i did have an occasional day where the misfire would not go away.
 

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+1 on the intake, there was a new redesigned intake later that replaced part of the plastic with aluminum to fix the problem. you have a early model, its got the problematic all plastic intake. the fact that its on top of the plugs says its not a head gasket.
 

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Discussion Starter · #16 ·
like i said... i would get the occasional miss with a smell of antifreeze on the plug. When i had my cams installed, the guy called and said "man, you have a cracked intake. Im surprised you are not having a misfire from the coolant leaking down on the plug". Thats when i told him i did have an occasional day where the misfire would not go away.
im sad now....:(...
but im going to do that compression test that sweet2k recomended. i have the intake manifold pretty much off right now its just sitting on the top of the motor. it was around midnight yesterday when i got it done. so probably tommorow after noon ill clean it all then go by the tool for a compression test.
 

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yeah the one they put on is different now and i had to make a bracket for the top of my alternator to keep the alternator from flexing into my procharger pulley. The other bracket wouldnt work with the new one.
 

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Definitely WAY WAY better than a head gasket! LOL
 
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