I'll let someone else answer the seafoam? I personally had a bad experience with it this last week I ran it in my wifes 99 grand am se 2.4 and now I have an exhaust valve knock on cylinder 2 spark plug is brownish black in that cylinder and the other 3 plugs are nice and clean sucks cause It's a bitch to tear into the damn 2.4
Without seeing it, I'd be hesitant to say. If I'm not mistaken they had probs with the spark plug coil. It's been a while but I wanna say the coil is one long unit with 4 boots on it for each plug, could be an issue if you are getting a misfire. But, that goes back to not having the care infront of me. Why did you use the seafoam to begin with? If you have valve noise you could have tiped a valve, but that would have been a mechaniacal prob. So many possibilities. Is the check engine light on?
no light it just started having a knock on the exhaust side cam cylinder 2 thought it might be a stuck lifter reason I tried seafoam after letting it sit for a week I started it up and to my suprise the knock was a light tic so I changed the oil and put some Lucas in it and started it and it was back to the knock again I checked each coil and they are all firing there is good compression when I rev it it blows a lot of water and soot out the tail pipe the motor had a $3000 complete motor out rebuild in 07 I could take pics of the plugs for you tomorrow if that will help.
Yeah post some pics. Can't hurt. I'll have my dad look at it, too. He has been doing this FAR longer than I, and has lots of experiance with those 2.4's.
yeah I talked to 1 garage and they want $300 and 5 hours just to tear down to get the cam covers off to see whats going on they said I'd be looking at a good $800 to $1200 depending on what is the prob I only paid $750 for the damn thing but it's in really great shape and it's the only car my wife can drive cause my Spec v is a 6 speed manual and she hates the 93 s10 blazer she calls it the beast