Oil Fouled Spark Plug -- non iridium suggestions?
#1
Oil Fouled Spark Plug -- non iridium suggestions?
Hi all.
My wife's 09 clubman keeps fouling the #4 plug. I pull it out and there is oil all over the electrode. All the other plugs are dry. I've looked for different plugs, but can't find one that isn't iridium. I want to try using a standard tip plug and see if it will behave better with the oil on it. Has anybody used a plug other than the iridium?
Also, how can I know where the oil is coming from?
Thanks,
Walter
My wife's 09 clubman keeps fouling the #4 plug. I pull it out and there is oil all over the electrode. All the other plugs are dry. I've looked for different plugs, but can't find one that isn't iridium. I want to try using a standard tip plug and see if it will behave better with the oil on it. Has anybody used a plug other than the iridium?
Also, how can I know where the oil is coming from?
Thanks,
Walter
#3
Iridium spark plugs are the most resistant to fouling of any kind of spark plug. The small electrode in them is hotter and burns away deposits better than other spark plugs.
Best to find out why that one cylinder is fouling the spark plug. I agree, a compression test is a good place to start.
Best to find out why that one cylinder is fouling the spark plug. I agree, a compression test is a good place to start.
#4
#5
Well, the clubbie has been sitting in the driveway except for quick trips to the store. It idles like crap if you drive beyond 2 miles -- but is ok while driving.
Anyway, I did a compression test and I have 175 on all 4 cylinders. I was going to do a leakdown test next, but haven't had the time to do it. Also, how do you get this to TDC since you can't see the top of the piston?? All other cars I have worked on you can see the piston through the spark plug hole.
Anyway, I did a compression test and I have 175 on all 4 cylinders. I was going to do a leakdown test next, but haven't had the time to do it. Also, how do you get this to TDC since you can't see the top of the piston?? All other cars I have worked on you can see the piston through the spark plug hole.
#6
your clubbie is a justa or turbo?
This is a good start with compression numbers. The next thing is to look for vacuum leaks. perhaps the oil seeps from the valve cover into the spark plug?
to get to TDC, you can use straws and better yet, there is a locking pin hole at the transmission bell housing near the exhaust. For Minis, it is 90 BTDC.
This is a good start with compression numbers. The next thing is to look for vacuum leaks. perhaps the oil seeps from the valve cover into the spark plug?
to get to TDC, you can use straws and better yet, there is a locking pin hole at the transmission bell housing near the exhaust. For Minis, it is 90 BTDC.
#7
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