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Old 12-13-2012, 09:54 PM
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piston slapper piston slapper is offline
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Join Date: Mar 2010
Location: Tampa Fl
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Quote:
Originally Posted by piston slapper View Post
Let's try this again...time to earn your keep...
Question #4....Kohler 25 with DSAM...

Installed 2 new coils..sequenced DSAM with tester...checks good...
Condition...coils have slight misfire until engine warms up...then runs fine...
Name That Failure...
In case you were wondering...
If the coils aren't gapped at .013...they will misfire..
As the engine warms up..the block expands the airgap...from ..002 to .004...
Thus bringing the coils that were gapped with an .010 business card into spec....
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