Spark plug gaping...

[jamestile49]

:help: My local auto part store recommended the gaping be .041 . I just found my manual after i installed the plugs. The 2002 Chevy Tahoe manual says .056 Can anyone tell me if this will do any damage to the engine.?.?.?

 

[jamestile49]

Correction... the manual says .060. The plugs are AC Delco. Please help

 

[samotahoe]

does it run funny? CEL turn on?

 

[cruzer076]

I would go with the manufacturer specs not local auto store...
What did you gap it at?

 

[jamestile49]

I started it at the auto part recommendation. I can tell something different afterwords.
I re-gaped it (0.50) and split the difference. Seems to be in good running standings.