Last week my car's tach started doing something weird. After I get into full boost (9psi) it starts to jump around as if it had a loose connection. It doesn't though, as this only occurs in high boost, not at any other times.

Car is a del Sol B16A w/turbo, factory ignition system.

Thoughts / Suggestions?

 

It's misfiring. Be careful.

 

thats a misfire.... if you listen carefuly you probably hear the exhaust note change....

check your spark plug gap...

are you running an msd???

 

You guys are right, this started happening right after I changed spark plugs. I went back to my NGK's which I know were properly gapped and the problem is gone. Thanks!

(no msd, factory ignition system)

 

hey i just realized ur from mississuga,,, is ur delsol green????

 

what plugs and what gap were you originally running?

 

no, its a black 96.. I work at JRP if you wanna see it.

Ryan C: I am running NGK BKR7E's stock number 6097. I don't recall the gap I'm using, but its slightly smaller than how they come out of the packaging.

 

thats cool i think i seen it before