Issue with spark plugs

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Aug 9, 2019 | 02:19 PM

#11

Dwag1122

Thread Starter

6th Gear

Joined: Mar 2019

Posts: 13

Likes: 0

From: Florida

Quote:

Originally Posted by toddskill

I run NGKs on my 16, no issues and the ecu knock detection still works. If it pings it will only do it once or twice and the ecu corrects it.
Do you still have the ones you took out? I'd bet they are the wrong heat range or something.

They were NGK DCPR7E

Aug 9, 2019 | 02:53 PM

#12

toddskill

Tourer

Joined: Feb 2016

Posts: 264

Likes: 54

From: .

Quote:

Originally Posted by Dwag1122

They were NGK DCPR7E

That's odd, that's what they list for it, yours must just be picky I guess.

Aug 9, 2019 | 04:02 PM

#13

lightweight bob

Road Master

Joined: Aug 2006

Posts: 1,148

Likes: 157

From: Banning, CA

Quote:

Originally Posted by John CC

The ECM reads the impedance of the ignition system to detect rapid increases in cylinder pressure, an indicator of preignition and detonation. Some say that other-than-original plugs interfere with the system. I'm not sure how much credence I give to that theory, but your experience would seem to support it.

OTOH, I can't see NGK listing a plug for that engine if it was known to have issues.

True - https://www.hdforums.com/forum/newre...ply&p=17955181 a previous post.