[streetknight2]

seems no matter how much fuel I throw at my car it still looks lean on the plugs. I'm putting in new plugs in staging lanes and shutting off through traps. Was told I'm running too hot of a plug. Could this cause my problem?

 

[dreday98781]

EFI or Carb?

 

[streetknight2]

Carb

 

[425ci]

What combo ? What plug ?

 

[ernie's 5oh]

When you add the fuel does the car pick up?

 

[slimbo5]

But if you add fuel does it pick up

 

[ernie's 5oh]

But if you add fuel does it pick up

Lol too funny

 

[qscamaro]

But if you add fuel does it pick up

 

[streetknight2]

6.0 LS...NGK br7ef plug gapped .030" 100 shot 93 octane 23 degrees

Car doesn't seem to pick up with more fuel

 

[streetknight2]

Actually surges pretty bad in high gear is why I was thinking its fat

 

[speedtigger]

Are you monitoring the fuel pressure? Do you have good fuel pressure at the traps? The only time my car ever surges is if I let the bottle pressure get too high or if I let the tank get too low and the fuel pressure fluctuates.

 

[streetknight2]

Yeah fuel pressure looks good. Nitrous pressure steady

 

[speedtigger]

What is the jetting and fuel pressure? Do you run an A/F gauge?

 

[streetknight2]

53n/47f 6.5#

 

[3Fingas]

Thats a close spread for 6.5. Are you at least seeing a shadow or speckles on the plug? I don't think the plug is too hot (IMO) though I would have it at .25

Are you logging spark? Wiring good?

 

[Mike Thompson]

seems no matter how much fuel I throw at my car it still looks lean on the plugs. I'm putting in new plugs in staging lanes and shutting off through traps. Was told I'm running too hot of a plug. Could this cause my problem?

Yes. A hot plug can hide the fuel ring. A cold plug can show a good amount of fuel ring and not be rich. Its all combination specific..

 

[streetknight2]

Thats a close spread for 6.5. Are you at least seeing a shadow or speckles on the plug? I don't think the plug is too hot (IMO) though I would have it at .25

Are you logging spark? Wiring good?

No way to log spark. Wiring seems good, I'll go over it again.

Here's the plug

 

[streetknight2]

Thanks guys. I spoke with Monte and he seems to think my tuneup is all fat and too hot a plug. He told me to go to a -8 plug, tighter gap, wider spread and less fuel pressure. I'm gonna baby step it I guess lol

 

[speedtigger]

No way to log spark. Wiring seems good, I'll go over it again.

Here's the plug

I see a light shadow on that plug.

 

[streetknight2]

yes, it's very light but you can see it. That plug was with 6# fuel pressure, it isn't any darker with 7# is why I was wondering about heat range affecting it