Spark Plug Question
Thread Starter
Instructor
Joined: Jan 2003
Posts: 147
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From: UT
Spark Plug Question
I was changing my plugs to NGK TR6's and gapped them to .035. I didn't have enough time to change all my plugs, as the shop was closing - only did 3 of them. Would this cause a timing problem since they're gapped differently than the other 5 plugs (I think the normal ones are .05)? Also the TR6's are a little colder than the platium ones. I've changed the plugs in cylinders 4, 6, and 8. The car was shuddering when I drove it back. Thanks for any help. :confused:
Safety Car
Joined: Nov 2000
Posts: 4,549
Likes: 30
From: Shenandoah Valley Virginia
Re: Spark Plug Question (cheemsaf)
IMHO do not think that the three plug changes would cause rough running. You probably broke a plug wire pulling one off or have one that is not seated properly on the plug or coil. That will cause rough running. You might want to check with other members on that .035 gap, it might be too small.
Thread Starter
Instructor
Joined: Jan 2003
Posts: 147
Likes: 0
From: UT
Re: Spark Plug Question (cheemsaf)
I've checked all the seatings...they are all on nice and snug. They make a clicking noise when they seat on both the plug and coil. I've never heard of breaking the wire before.
Melting Slicks
Joined: Jan 2003
Posts: 3,251
Likes: 4
Re: Spark Plug Question (CHJ In Virginia)
IMHO do not think that the three plug changes would cause rough running. You probably broke a plug wire pulling one off or have one that is not seated properly on the plug or coil. That will cause rough running. You might want to check with other members on that .035 gap, it might be too small.
Remove each of those plug wires you had changed one at a time with the car off, start the engine and determine if the car runs worse. It should run worse with a plug disconected and so, if the engine runs uneffected that would let you know which wire or plug is problematic. Inspect the wires visually and also run the engine with the hood up and look for the spark arcing off the wires.
Is that gap correct??? It sounds too small. My 1999 runs a gap of .060. :confused:
