I just changed the plugs in my 88 4.2 in anticipation of getting it smogged. This is what the plug looks like. I am thinking there shouldn’t be oil on the threads but not sure. Does this pic tell me anything or is this normal?
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Yes right.Were the plugs tight? No offence but the entire plug looks pretty greasy dirty.
Morning Geos...looks like the oil is on the wrench 'boss' portion of the plug as well, recommend checking your valve cover gasket ...oil could be migrating from there
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I am not sure yet. I just bought it and wasn’t driving much. It came with dry rot tires and I didn’t trust them to go far. If I have oil consumption, does it mean that I am on my way to a rebuild? Jeep has 47K on the ODO, but who know how much idle time etc.Yes, somewhat carboned up. Hows the oil consumption?
Good stuff gents. Thanks. I have done the tune up stuff. I drove it +\- 70 miles today. Ran like a top 65-75 straight down the highway. I will check for oil consumption and also put it under a black light to looks for leaks. I added die to the oil. I definitely had oil hitting the ground but couldn’t tell if I was melting off old crud or if I actually have a leak. This is so fun!There are some ash deposits forming, but I agree with Gilaguy...the plug you're currently running is a bit overkill. Biggest thing here is to start with manufacturer recommended tune-up items and settings, then drive it a while and recheck...when was the last time the plugs were changed?
47000 is all.No worries Brother...how many miles are on your YJ?
I am about to start chasing my oil leak and just saw this post. 48,000 on the odo.No worries Brother...how many miles are on your YJ?
I wouldent put any Lucas product in an enemy's lawnmower. Snake oil crap like 99.9% of the money maker additives on the market.
I'm following this as I have just changed mine in a 2.5 88 hoping to get rid of my backfire. One if them is definitely carbon coated!
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