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  1. #1
    Silver Member scsims's Avatar
    Join Date
    Jul 2009
    Central, KY
    Mahindra 5525

    Default Found Oil Around Spark Plug Coil Boot

    Just changed the plugs on my wifes corrolla. Has 174K miles and on one of the cylinders the coil boot had a small amount of oil around it. Not at the top but a few inches down. It doesn't use oil over 5K oil change, at least not enough to notice.

    Does this indicate a problem?????
    Mahindra 5525 ML252 FEL, 6' Rotary Cutter, 7ft MF Sickle Mower, Cub Commercial M48 Tank.

  2. #2
    Elite Member
    Join Date
    Mar 2002
    Iuka Mississippi USA
    3550 Fard Backhoe and a 1948 Farmall Cub,

    Default Re: Found Oil Around Spark Plug Coil Boot

    Does the plug go down through the valve cover. I was driving my wifes 01 Ranger a few months ago. I got some gas one night and THe next day I thought it was the gas. It was sputtering a little and on the way to the shop it died. I hauled it back to work and was about do a tune up. I found oil on top of the plug wires. It was shorting out but its still got problems. I need to have the valv cover gasket done. I ll have to take it to the shop as its about 20 years newer than what Im used to working on lol.

  3. #3
    Super Member clemsonfor's Avatar
    Join Date
    Sep 2009
    Greenwood Co., SC
    Yanmar YM2000

    Default Re: Found Oil Around Spark Plug Coil Boot

    Your valve cover gasket is leaking. it dont matter if they are dual overhead cam and go through the vavle cover or on the side of the head. A leaky valve cover gasket will fill the plug wells. The one through the top of the cover are the worst as it cant over fill and runn out over time. My saturn had leaky plug hole gromments and the #1 plug well would fill up to the top of the plug and it would sit under oil, causing me to blow it out with air just to pull it ot keep the cy from filling with oil when i pulled it.
    YM2000. MF dirt scoop,4' Jbar bushhog,boompole, LMC 12-16 disk harrow, 4' Atlas boxblade (with rippers). 1980 chevy K10,1990 ford ranger 2wd (285K miles),1997 saturn SL2 (twin cam!!),2001Toyota Higlander
    1986 Cobia 177 sunskiff w/1981 Johnson 60 hp
    1991 Javalen 17ft w/same year 150 Johnson GT
    Troybuilt 4 cycle & Echo 2 stroke,cold natured(need carb rebuild),MS390 Stihl, Northern tool pressure washer, mixes water into the oil in the pump(now dead, motor on a tiller). 5000 watt generator.

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