Playing in the garage and decided to pull a spark plug just to check it out. I have 2006 6.2 MPI's. Funny thing is my 6.2 owners manual states that the plug should be a AC Delco 41-983 and what I found factory installed in the engine is a 41-932. I am going to follow-up with Mercury next week, but searching the internet I found the 41-932 is a hotter plug than the 41-983, and that the 41-932 is no longer available and has been replaced with a 41-993. Spark plug alphabet soup! I am wondering if my manual is just wrong. Either way, both plugs will 'fit' the 6.2, just don't know what heat range is ideal. What plugs are in your 6.2's??
Thread: Hey 292 6.2 owners...
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12-07-2008 12:24 PM
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12-07-2008 12:26 PM
BTW, the Fountain group is ahead of us in post count. We can't let that happen, can we?
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12-08-2008 09:29 AM
I'll check with my mechanic, he just pulled the plugs on my engines, Saturday.
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12-09-2008 12:00 AM
Have you pulled the trigger on those new tabs?
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12-10-2008 09:37 AM
Not yet,but taking a hard look at it. I hadn't figured in the price of patching the old holes, and cutiing into the inner liner kind of bugs me out too! No answer on the plug type yet.
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12-11-2008 08:45 AM
OK, the verdict is in. The spark plugs that are in my motors are AC 41-993, and reportedly are perfect in color. This number cross references to an APP 605 Autolite, and a PTR5D10, NGK. Hope this helps.
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12-12-2008 08:26 AM
Motors are 07's, I'm not sure on the hours, probably not more than 50, if I'm lucky. Had a bad year trying to get my new lift set, and made it alot easier to jump on the pontoon, versus doing the whole ramp thing with the Formula.