Help request: spark plug replacement
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Newbie
Joined: Jul 2007
Posts: 16
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From: Glencoe, Illinois
2002 C320 Sedan
Help request: spark plug replacement
I have a 2002 c320. Engine # 112.946.
Can someone tell me how to change the spark plugs. Specifically I need to understand about pulling the plug wires off the plugs. Do I need a special tool for this? Or do they come right off? I looked at the plug wires today and the metal cover that goes over each of the plugs. (It doesn't look like the plug wires on my '66 Mustang) Do not want to do any damage without asking for advice first.....Gary
Can someone tell me how to change the spark plugs. Specifically I need to understand about pulling the plug wires off the plugs. Do I need a special tool for this? Or do they come right off? I looked at the plug wires today and the metal cover that goes over each of the plugs. (It doesn't look like the plug wires on my '66 Mustang) Do not want to do any damage without asking for advice first.....Gary
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Joined: Jul 2006
Posts: 3,365
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From: Orange County, CA
GMC - Miata - Trek - P-Car
Good timing…I’m working on a DIY plug swap for the 112 V6. Bad news is it’s still not ready for uploading.
Those wires are on there tightly. MB’s procedure is to use an open-end wrench that fits in the ridge at the top of the metal connector. Use it to pry gently against the cam cover and they pop off easily.
Are you the gent who was asking about torque arm bushings? I see you’re tackling a new challenge! I’ll email you MB’s (copyrighted) plug R&R information.
Those wires are on there tightly. MB’s procedure is to use an open-end wrench that fits in the ridge at the top of the metal connector. Use it to pry gently against the cam cover and they pop off easily.
Are you the gent who was asking about torque arm bushings? I see you’re tackling a new challenge! I’ll email you MB’s (copyrighted) plug R&R information.
MBWorld Fanatic!
Joined: Nov 2001
Posts: 5,851
Likes: 196
From: Huntington Beach, Ca.
'17 Jaguar XF
Be careful how you pull and replace the plug caps and you won't have problems. The driver's side plug up against the firewall is very difficult, but obviously doable. Try different combinations of sockets/extensions/handles to get the right combination that works. DON'T pull on the plug wires. The recommended tool is a 17mm crowfoot wrench but I found (through this forum) that Harbor Freight Tools sells a long reach (20") plier that is perfect for the job.
Super Member
Joined: Mar 2006
Posts: 545
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From: Northeast
e300d
Guys, SNAP ON/Blue Point make a tool specific to this task:
http://buy1.snapon.com/catalog/item....re&dir=catalog
http://buy1.snapon.com/catalog/item....re&dir=catalog
