Tri-Z killing Spark Plugs

[85Tri-Z]

Hey guys ,, what would cause my Tri-Z to kill spark plugs alot,,, sometimes i will go thru 2 plugs a day ,,, other times i will get weeks on a plug,,,

[ATC-Eric]

What do you mean kill? Foul?


How do the plugs look when you pull them? Black and wet?



Id Say your to rich. Hows the throttle response? Does it hesitate on bottom? Top?

[DixiePlowboy]

I may be oversimplifying this, but noticing your earlier jetting issue thread, I'm assuming that you've got a fresh/clean air filter in it.

If you've started from factory jetting specs, taken plug readings on every change, re-jetted to compensate for what the plugs are telling you, and still losing plugs and having power issues, that maybe something else is working against you.

You're not mysteriously losing transmission oil are you?

[85Tri-Z]

hey ,, ya im running BR8ES plugs ,, ,, & for jetting i started with a 320 jet and it bogged @ wot ,, then tried a 420 ,, same thing ,, cutting out and bogging @ wot,, so i dropped down to a 220 main jet and it worked fine ,, well i checked the plug ever now and than and its a Light brown,, which i thought was good,, But today when i took the plug out it was light blackish color and wet,,,,,,,,

[85Tri-Z]

& ohh no it never went down a bit in tranny oil ,,, when i put a new plug in it ,, it works good,, pulls hard thru fr idle to wot !!!,,, ,, no hesitation ,,, maybe i have to drop down to an even smaller Main jet ????

[maggiesboy]

sounds like you need to work on the needle and pilot jets. Most folks ride on the needle and not the main. Only you know that answer, and if you don't jet for how you ride, problems will still arise.