Spark plug blow out.

[Tommy V]

I think im having spark plug blow at higher rpms,around 7k.I have them.gapped at .30 and have about 4k miles on them.Has anyone ran into this before?Running around 14 to 15 psi of boost.Did not get a log yet,was taking a friend for a ride when it happened 2 time right before the 3rd gear shift.

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[JennyStang]

PBD said .26 for blower plugs

 

[Tommy V]

Yea im going to put a new set in and gap them to .27.I had some octanium runs on these plugs before i switched to e85.

 

[JennyStang]

Yea im going to put a new set in and gap them to .27.I had some octanium runs on these plugs before i switched to e85.

I use Boostane 10 oz every tank for about 10k at .26 plug gap. I don’t have as much boost as you but that what PBD wants. That’s what they get lol and no issues

 

[rio16]

I had a spark plug blow out while logging. my plugs were bad and coated with Octanium. Simple plug change fixed it.

 

[ahl395]

I had the same issue trying to run 21* timing at 15psi. I gapped to .026 or .028

 

[Tommy V]

Thanks guys,putting a new set in tomorrow and going to gap them at .26,hope this fixes the issue.

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