TKC (The Killing Committee) Forum

I have a 1992 Pontiac Bonneville..just had to replace the alternator AND the battery. I bought a 140 amp alternator instead of the stock 104 amp since I have a 1000W amp powering two subs in my trunk, and that draws more power from the alternator than what the 104 amp was designed for. Got that fixed...then I noticed my tensioner pulley was moving more than it should....turns out the bearings on it went. Same thing happened on my mom's Impala when my dad changed the alternator on that (same exact engine as my Bonneville). Thought everything was fine...turned my car on and all of a sudden we smell fuel. Turns out when dad went to take the bolt loose for the pulley, it was a reverse thread and he didn't know that. He slipped and his arm went behind the engine. He had hit the return fuel line and didn't know it, and that line getting hit caused the line to get crimped in the piece that holds it onto the engine itself instead of sitting in the slot where it's supposed to be in said piece. That caused fuel to build up in the engine, backed up into my exhaust line (had white smoke and fuel coming out my exhaust pipe) and possibly fouled out one of my coil packs.

My grandfather is a retired mechanic and looked at it for me. He thinks one of the coil packs could be bad from the fuel backup because one of my cylinders is misfiring once the engine gets hot, and the fuel that is still inside the engine is burning off and spewing smoke out one of the spark plug cylinders. Just gotta let all the excess fuel burn off then replace the coil pack...that freaking coil pack is $50. I literally just spent over $200 in the last two weeks on my car. I seriously just need to get a new one T_T

well the stripped bolt you can use JB weld and it will hold because that happened to my bonnevile and the way they are inplace is a complete housing which holds coolant lines in it, that is about $200 to replace and the misfire could be a few things but first i would take it off and check the resistance on the coil pack it might not be bad yet, it could be the spark plug being fouled out and not being able to ignite the fuel properly. but what i would tell you is to take all the plugs out and crank the motor over that will eject all the fuel out of the cylinders and that way you can see if any of those plugs are fouled. this will help you figure the coils http://www.bonnevillepro.com/forums/vie ... 118&t=7740

the other thing you will and to make sure is the plug wires which is easy to do but when doing any work with the plug wires and plugs is get a chalk or something you can mark each wire and plug to each hole and pack location so you are not guessing and causing a bad misfire. there is also another way to get rid of the fuel in the cylinders is to take the plugs out and take a long lighter and ignite the fuel inside the cylinder. The one thing with those coil packs is that most every mechanic will tell you that if you replace 1 you need to do all 3 otherwise you will create and issue with you cylinders burning at different temps and could possibly create a misfire or preignition of the fuel. so that is why i am telling you to make sure its the coil pack before you start replacing things.

I'm just waiting for my grandfather's final diagnosis. He was literally listening to the engine as he revved the accelerator with the hood open. He knows his stuff. He's a retired mechanic who used to build and race dragsters in the 80's, and he's actually rebuilding my dad's Jeep Cherokee engine right now. He said it might be a coil pack but he's not sure yet. I already changed 3 spark plugs last night (my back 3 foul out faster than the front 3) and still having the same issue. My wires are nearly brand new, changed them 2 months ago. Also, the bolt isn't stripped out. The socket just slipped off. We already checked it over

well if the back foul out thats an issue in itself.

yeah. I have to replace those every 2 months or so.

Crim. beleive me i know what are you talking about bro., i just changed my Grand Cherokee engine, they gave back to me this morning and because it's a 2006 i had to pay ($4629.27) for every thing, the new one(engine) has 67000km.

well crimson i hope its just the coil pack myself but it seems you have many other problems with the motor. Just as a suggestion you could always seafoam you upper intake and gas line to see if it helps to clean the issue.

My grandfather is now thinking it isn't a coil pack...he's giving my dad some engine codes or something so he can better pinpoint the issue and where it is. I've used seafoam in the past and it works good so I'll probably get some more.

I had problems with automobiles too........until I bought my Toyota Tacoma 4x4. 60,000 miles no troubles yet. Oh and if you are wondering it was made in Fremont,CA so it was at least it was assembled in the USA by Americans, unlike my Dodge Ram 1500, which was made in Mexico and one of the biggest piles of junk I ever had.(Oh and my Dodge Dakota I bought new couldnt keep a tranny in it...2nd biggest pile of junk)

I dont know if you know this trick but take a nice piece of wood and put over each cylinder and listen to it you will be able to tell alot from the vibrations thats how i found out my alt was bad on my van.

Jeeps, well lets just say I know more about them than I should!! Just purchased Jeep number 6 today! Already lining up a reman motor for it. Thinking about going with a Golem 4.7 Stroker for it!

Well we know now it's not a coil pack. The engine codes are showing everything is working perfectly...which is odd. Obviously something is NOT working right. Anyway, me and dad changed the coil packs and the car is still acting up. What happens is once it gets hot, one of the cylinders starts misfiring and causes the engine to idle really rough, and smoke and fuel to come out of the exhaust pipe. White smoke pours out, fuel drips out, and the engine starts idling REALLY rough. So badly that if you rev the engine it nearly stalls when it goes to idle again.

Head gasket? white smoke is usually oil burning.

Its blue smoke for oil and white smoke for coolant usually.