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Ford Raptor Engine Discussion and Performance Mods - 3.5 Liter EcoBoost V6 [GEN 2]

Misfire Code? SPD may have found a simple fix.


This is a discussion on Misfire Code? SPD may have found a simple fix. within the Ford Raptor Engine Discussion and Performance Mods - 3.5 Liter EcoBoost V6 [GEN 2] forums, part of the GEN 2 (2017+) Ford F-150 Raptor Forums category!
SPD Performance has fixed the misfire code issue on 2 trucks. We replaced the factory spark plugs with Motorcraft SP542 ...


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Old 10-12-2017, 06:06 PM   #1 (permalink)
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Default MISFIRE CODE? SPD Performance may have found a simple fix.
SPD Performance has fixed the misfire code issue on 2 trucks. We replaced the factory spark plugs with Motorcraft SP542 (cold plugs) which we spaced at .028.

Installing time is 30-45 minutes. SP542 plugs MUST be respaced to .028 - .030, but make sure they are all the same spacing. They will come in with a larger spacing.

P/N SP542
Ford P/N CYFS092YPT
6 spark plugs are required.

This misfire code seems to happen more frequently after installing aftermarket intake systems but has also plagued 100% stock trucks as well.

Hope this helps you guys. Please send me feedback to [email protected].





Last edited by JacobSPDPERF; 10-12-2017 at 07:04 PM.
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Old 10-13-2017, 08:43 AM   #2 (permalink)
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Step #38 From the whipple stage 1 kit also states to close the spark plug gap to .025'' should this should be done no matter what or only if mods are done to produce more air flow.

Remove factory spark plugs. Close the stock gap to .025. Failure to close the gap may result in horsepower variance and possible misfire.
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Old 10-13-2017, 10:04 AM   #3 (permalink)
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SP534 spark plugs are running too hot.

The closest we are gapping heavy tuned 11-16 ecoboost trucks are .026. The coils on the 2017-18 Raptors are better so a gap of .028 on the SP542 would be fine.
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Old 10-13-2017, 12:02 PM   #4 (permalink)
 
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Originally Posted by JacobSPDPERF View Post
This misfire code seems to happen more frequently after installing aftermarket intake systems
Thanks!

Yet another reason not to buy a "Cold Air" Intake (CAI) system
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Old 10-15-2017, 02:58 PM   #5 (permalink)
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Whipple does extensive testing and they say .025. Guess it’s each his own.
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