Wompa164

iTrader: (4)

Hey.

So I changed my spark plugs yesterday, NGK BUR9EQs all around.

Today I got on the boost for a little bit. When I started hitting peak boost, I heard a funky noise. I don't know exactly how to describe it, except for kind of a weird clinking sound.

When I was changing the plugs, I did tighten them rather snug. I don't know if they're too deep or what - I suppose I'll go loosen them up a bit.

Any suggestions on what I should look for?

Thanks!

1987RX7guy

iTrader: (3)

maybe its arcing?

Wompa164

iTrader: (4)

Help someone :<

gxlspeeder

i've had this same problem since i've had my t2, except mine is anything low rpm and over half throttle

BC-X

weird.. i get this very same problem when under WOT, and full boost in my S5 13bt... almost feels like its the trans, because i swear i can feel it in the shifter. Even though my trans, was fully rebuilt not even 10k ago, as well as new ACT clutch, master, and slave. My thought was that it is either the clutch, the dust shield over the tail-shaft of the trans, or my engine is pinging, although i think it would have bit the dust if it were ping.
anyone out there know whats going on ?

86Rx7GXL

All 4 plugs are not the same. Leading and trailing plugs have differant heat ranges. Leading plugs should be BUR7EQ and trailing should be BUR9EQ.

Wompa164

iTrader: (4)

Thanks, but I know better than you which plugs to run for my car.

Running 9's in the leading and trailings is not uncommon at all.

J-Rat

iTrader: (2)

Wierd clinking noise?!?!

umm.. Pinging anyone? Dude, how much boost?

Wompa164

iTrader: (4)

Yeah. My first thought was 'oh ****, detonation', but I couldn't believe it.

The only thing I could think of is that I got a bad tank of gas. I normally keep off the boost, so I might not have noticed until I was purposfully boosting today. This might be working in combination with the fact that my plugs were pretty much roasted when I pulled them yesterday, and they might have been sending too weak of a spark before to be a problem (they were really bad).

That's the only thing I can think of. I haven't changed/run anything different in terms of settings than I usually run, so that's why it didn't make sense to me. But now I'm beginning to see it as a large, frightening possibility.

Wompa164

iTrader: (4)

I figured out a better way to describe the sound..

It's not like a metallic clinging. It's more along the lines of quick popping popcorn, or a snapping zap. I understand those are also what detonation sounds like.

Ugh.

J-Rat

iTrader: (2)

Yep, thats about what it sounds like.

Recheck your plug wires/etc..

RotaryEvolution

iTrader: (30)

ping!

the pinging in a rotary is actually louder in the transmission than from the engine from what i have seen.

Adam

i think you put your wires back on wrong, mostlikely on the trailing side, Or the wires are old, and maybe when you put them back on they are arcing to another wire

Rotor13B

Yep, definately pinging, especially if it sounds like a popcorn machine.