Spark Plugs - 15500 mi

[afree]

Just wanted to get thoughts on my plugs. 2nd change on them. First change was at 10k and figured I would do 5k intervals since it's tuned and driven hard.

A little oil on the top of the threads and water on #6. No oil anywhere else. Peeked at the top of the piston and it's try. Not sure what this is from. No valve cover leaks detected. Insulator tip on 1 appears to be a little darker (assume richer) than the others. Order is from right to left (1-6). Ecutek (insert tuner) ots stg 2 tune.

I plan to do a compression test (after a 14mm to 12mm adapter arrives)

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[razorlab]

Ecutek doesn’t offer OTS tunes. Who tuned it? Also, is #6 (or whatever the darker porcelain one is) a different plug? The porcelain doesn’t look like it protrudes as much as the others. Might be the angle of the photos though.

 

[afree]

Ecutek doesn’t offer OTS tunes. Who tuned it? Also, is #6 a different plug? The porcelain doesn’t look like it protrudes as much as the others. Might be the angle of the photos though.

Visconti OTS tune (I should have worded it differently). They are all the same PN. More photos comparing 6 to 5. 6 on top in the 1st photo. 6 on the bottom 2nd photo.

Edit: #1 is the darkest. See post below.

 

[afree]

#1

#6

 

[itzTang]

Looks like issue with #1 not #6 then. #6 looks clean

 

[afree]

Looks like issue with #1 not #6 then. #6 looks clean

It's hard to see from the photos but #6 has oil at the top of the threads by the captive washer.

 

[itzTang]

It's hard to see from the photos but #6 has oil at the top of the threads by the captive washer.

if theres oil there thats usually coming from the valve cover gasket/lube seals leaking in
the porcelain for #1 looks like it has more black soot than the rest. usually from running richer than the other cylinders

 

[razorlab]

Visconti tune

There's your problem right there.

 

[afree]

There's your problem right there.

Agree.

I may just switch to MHD. The fact that someone else essentially owns my DME pisses me off. Ecutek is a scam (for this platform at least).

 

[Loco38SUP]

Agree.

I may just switch to MHD. The fact that someone else essentially owns my DME pisses me off. Ecutek is a scam (for this platform at least).

Get a custom tune for your setup, you have a good tuning platform just need a better tuner. The OTS tunes are ok but custom is better.

-RJM

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