Problem fixed!!

[Race This]

Originally Posted by A_sixer(Tino)

So the missfire is gone, gone, gone.....She's purrrrrrringgg now at Idle....LOL

I did find out what the cause of the missfire was.....

Cheap Nasty Bosch Platinum plug.....

I gapped those to 0.54 and installed then..... as soon as I fire the car there is a miss....Immediately...

When I replaced the Bosch with the Ngk's I found that two of the Bosch's plugs gaps where almost closed...... like 0.10....WTF I am positive I gapped then correctly.....so those cheap pieces of crap ........

Anyways, all better now!! she's running great......now just to wait for the SC to be repaired......

I feel your pain bro. That's WHY I always go 'GAPLESS' plugs; the gapless ones for our cars are: E3, Bosch Platinum +4 (Must be the +4's), and Brisk.

Originally Posted by Race This

I feel your pain bro. That's WHY I always go 'GAPLESS' plugs; the gapless ones for our cars are: E3, Bosch Platinum +4 (Must be the +4's), and Brisk.

Gapless plugs aren't always an option with F/I cars. THe gaps often have to be closed somewhat from stock for reliable ignition under boost.

[ricklmesa]

Aren't Bosh spark plugs pre-gapped?

[Race This]

Originally Posted by ricklmesa

Aren't Bosh spark plugs pre-gapped?

The +4's, E3's and Brisks are. However, Torch_Vert is right... with some plugs you have to "narrow the gap" so that the boost doesn't 'blow out' the spark.

[Puerto Rico 4.6]

if you plan on running boost on those you have to close up the gap ...at least to .30 -.25 somewhere in that range.

[Flapjack]

Funny, I've had problems with Bosch stuff in the past, too. I had an old 1995 Chevy Lumina that needed a plug/wire change bad. Changed everything out and it ran like ass. Changed the fancy Bosch +4s I got with a set of plain old copper-cored plugs. Still ran crappy.

Come to find out one of the new Bosch wires were bad....

Originally Posted by A_sixer(Tino)

So the missfire is gone, gone, gone.....She's purrrrrrringgg now at Idle....LOL

I did find out what the cause of the missfire was.....

Cheap Nasty Bosch Platinum plug.....

I gapped those to 0.54 and installed then..... as soon as I fire the car there is a miss....Immediately...

When I replaced the Bosch with the Ngk's I found that two of the Bosch's plugs gaps where almost closed...... like 0.10....WTF I am positive I gapped then correctly.....so those cheap pieces of crap ........

Anyways, all better now!! she's running great......now just to wait for the SC to be repaired......

[Stangfanatic06]

Bosch sucks for domestic cars in general. NGK's are ok but were designed for use on japanese cars. For those of you that don't believe me I have seen a nissan sentra that will NOT run with bosch plugs at all (brand new) but with NGK's (brand new) it ran perfectly fine. It was a lesson in school and i was completely dumbfounded. Don't ask to explain why.. it just did.

I rely on are either motorcraft (obv. for fords) or denso iridiums $$$.

High five on the easy fix!