Engine boggs @3500 after sparkplug replacement gapped at .045
- Thread starter Alexb
- Start date
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iamdub
Full Access Member
Two words:
Rev limiter.
Took her for a drive and ran perfectly smooth.
Sorry for wasting your time guys
LOL
That's not a bog! That's the drive-by-wire controlling the revving. Glad it was nothing, but at least you have a solid tune-up now.
Lol I know now. Straight shenanigans on my part.
But it is possible to gap iridium plugs with the $2 gap measure tool from Wally world(walmart).
And I'm definitely getting more power above 3000 rpms with the gap at .045.
I am amazed at how smooth a 17 year old truck can run when taken care of.
But it is possible to gap iridium plugs with the $2 gap measure tool from Wally world(walmart).
And I'm definitely getting more power above 3000 rpms with the gap at .045.
I am amazed at how smooth a 17 year old truck can run when taken care of.
SnowDrifter
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.045 as compared to what?
I'm gapped at .060 right now, you have me thinking about changing it
.060 is what my burb stock gap is meant to be. All I know is this gap is highly recommended in the 8.1 community. Not sure how it affects 5.3 or 6.0 of the same years.
I suggest trying. Also If I did it again I'd go with ac delco 41-110.(I think that's the right one) as they are iridium and pre-gapped at .045
swathdiver
Full Access Member
41-110 comes with a .040" gap as did the older 41-985.
And does anybody think the difference between .040 and .045 is anything that will matter....5 thousands of an inch? 
swathdiver
Full Access Member
Yes!
I guess to a minor degree it’s possible. But how much?
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swathdiver
Full Access Member
I reckon every engine is different Mark. My Buicks were sensitive to it and just a few thousands off would not run right.
