Why allways #4 spark plugs is blacker than others!!?

thanks for help!!

as my old man always said its because number 4 gets the most wear ond tear when you drop the clutch etc cos its closest to the flywheel and therefore gets more stress etc on it. I think hes talking out his arse tho

UUUUMMMMMmmmmm OK! but why clutch???

Yer, all due respect to ur dad but thats a crock......an amusing crock....but still a crock.
Ive read something on this before and supposedly its an airflow issue that supposedly restricts airflow to that last cylinder under high flow conditions, due to the shape of the tapered inlet log.
Could be associated cooling issues at the last cylinder as well but Im not sure on that one.
Anyone?
L8tr
E

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The older we get........the faster we used to be!

Has your TB been re-angled? Bit of a newbie reply but always been worried about the look of those things..

TB as..........? Turbo?

Hey Evan!! Thanks for the help!! your story sound more betther!!!

Paul
TB = Throttle Body
L8tr
E

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The older we get........the faster we used to be!

"The older we get........the faster we used to be!" that's cool!!!

anyway My TB is stock and it at the same spot as stock!!

dose it make any diff if it strait or not? I think it's a bettor flow but...?

I've also heard that number 4 suffers a bit on the air flow department.I don't know if you would see the results from that in a stockish engine though?
The clevererer guys on here should be able to confirm this?

i thought it was because the water temp is alway hotter in the rear so its always #4 cylinder that has trouble because its always runs hotter than the rest?

And I thought all the home remedies for the olden six with the long reach single carby inlet manifold were dead . She'll be right dad have another long neck o black .

My engine is 2.1L but I don't think that will make any differents ya?

Probably not mate, but if I remember correctly, it says your rig keeps up with GTR's, so she must go a bit better than stock?

Ya she dose keep up with the "R" over hear but she's a real tempermental!! I guess all FJ engine are like that ya!!?

Yeah mine was a bit that way as well. Having an aftermarket computer removed a lot of the sources of problems though

I need one of the Aftermarket C/P...a real one!! :p