well, i went to autozone, and came back armed with an oil squirter, ATF, spark checker, and some antiseaze (sp).



so, i began by pulling the plugs, which i'm not too sure if they are any good. the engine was rebuilt only a year ago, so i'm not too sure. yall be the judge. here are the pics.

so, i then decide to check the spark from each coil, and each one did spark, although the leading sparks (L1, L2) were much weaker looking, much smaller.



decided to measure the resistances of the wires, and each one got around 7.5 K ohms (they are 7 mm, stock i presume). while i was checking the leading wires, i noticed major rust around the part of the wire that connects to the plug.



could this be the cause of my no-start problem? i would venture a guess of "hell yeah!" so, i need some new wires, which one's should i get? i was thinking the magnacore 8.5 mm from mazdatrix, but they cost $60. i know the jacobs from rx7.com are only like $40 and also 8.5 mm. any suggestions?

you went through the trouble to take them out..... you might as well replace them even if its not fouled

those wires are ****, stock ones arent bad and wont interefere with

your radio, not sure if those performance wires they sell are

RF shielded or not.



Plugs dont look terrible but need to be replaced, yearly is a good

bet depending on driving habits and engine condition.

i'm emailing the rx7.com guys to find out some more info on their wires, and see if they interfer with radio signals.

i have jacobs wires in my car.... they dont interfere wiht the radio, to me they're just like stock

there you go, the answer to your question!

Actually most your aftermarket wires are more shielded then the factory ones, we used to keep a factory wire in the toolbox for when we were timing cars, with some of the aftermarket wires we could not get a signal to the timing light, so we'd stick the stock wire on.



We have some in the store that have a grounding strap on each wire if you want to be 100% LOL



Spark plug Wires

high performance race wires will interefere with radio signals

race cars have no radio remember? lol



Street wires wont.

I have the hotwires spark plug wires and i get no EMI from them. I had a static coming from the radio and I put a good ground to the metal backing ou the radio and it killed it. But I got it like a month after the wires.

rx7.com has 8.5 mm wires for the cheapest, and their NKG plugs are also the cheapest, and i can kill to birds with one stone. i'm leaning towards jacobs.



although i'd rather stick with red, since that's my engine theme, but i dont want to pay an extra $20 for the color.



phins, how good are those MSD wires? if yall sell NKG plugs, i'd buy from yall, but i didn't see any listed. i also want a nopistons.com license plate, maybe a sticker, and possibly a shirt, so getting this in one shipment would be like christmas in july.



hey, yall have given me soo much help and saved me money, i'd rather stay loyal. https://www.nopistons.com/forums/pub...IR#>/bigok.gif

He might sell plugs, everythign he sells isnt listed IIRC.

The second plug in that pic is toasted. I'm sure it was in the rear, this is very common. The edge's of the plug are burnt off making the gap wider and harder to spark. While they still might work now, replacing them would be a good idea. I run oem replacement NGK brand wire's, 7mm I presume (doesn't say on the wire) and they work just fine and don't break the bank. I don't have a radio in either of my 7's so I'm not sure about interference part.

It's been 7 years, I doubt it really matters.

Oh crap, I didn't notice the year on the post, the thread appeared on the bottom of the page and i assumed it was current. What a strange forum trying to resurrect post's that old. :P

No worries, feel free to resurrect anything you want! The bottom just shows "similar topics" to the one you're viewing, regardless of age.