bad misfire need help
Thread Starter
Teching In
Joined: Jan 2013
Posts: 9
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bad misfire need help ok so I have a 2001 ws6 and it's running really bad. it feels like it's only running on 7 cylinders. I installed long tubes 4 weeks ago, during install I broke a spark plug, I went to Wal-Mart cuz it was like 12 in the morning and bought a bosch spark plug to replace it. well it was raining last week and wile driving in the dark I went through a big puddle on the way to work. ran fine the whole way there, after work on the way home it started misfiring and running on 7 cylinders, weird part is when I turn the car off then back on it would run good for a few seconds then start misfiring or not firing at all. went home next day it was dry and pulled all the spark plugs and number 6 cylinder(the one I replaced) was water on the threads of the. spark plug, cleaned all the spark plugs and wires(2 wires had some rust on the coil side) started the car up and it ran and drove fine, I wake up for work this morning and the problem is back and I just can't figure it out any help will be greatly appreciated
I would start with basics. Get a new set of wires and get a new plug to match that 1. After that you will need to try and figure which cyl is miss firing. Might have to go old school and unplug a coil pack 1 by 1 if you can get a code for any cylinders. I'm not sure what to think about the water on the threads. Hopefully its just condensation.
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Thread Starter
Teching In
Joined: Jan 2013
Posts: 9
Likes: 0
well I don't have a way to narrow it down, I don't have a scanner or anything I just know I have the p0300 multiple/random misfire. I use dexcool mixed with distilled water 50/50. now I feel stupid for not smelling it. could a blown head gasket cause that much power loss, I had trouble driving up the hill to my house and it's not that steep, that's how bad it is. I could still check the head gasket though.