Can anyone tell me why only 2 cylinders, 1&3 in this case, are running really rich. The 2 plugs are BLACK and gassy smelling. The other six look white to light brown.

The wires are getting plenty of spark to the plugs.

[This message has been edited by speedlvr (edited May 22, 2001).]

 

well if we don't have your specs how are we supposed to help?????
intake?
tb?
exaust?......


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-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

Soon to be installed:
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz

 

I figured someone could give reasons in general why this would happen. It doesn't make sense.

383 stroker.

Rochester 305 throttle body with 350 injectors.

K&N 3x14 open element.

1 5/8" Hooker shorty headers with dual exhaust.

Custom chip.

Don't be a smarta$$.

 

you still didn't say what intake you had. I asked because TBI's aren't known for good fuel distribution and if you put it on a 4 barrel carb intake, things susaly don't get better in that area....

 

I noticed the same thing when I changed my plugs 3 days ago. Only cylinder 1 and 3 plugs were black. The other 6 looked great.

My specs are in my sig. Everything else is stock (including intake).

Any idea what would cause this on my car?

Thomas.

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1992 RS Camaro - Red
305-TBI/5 Speed Manual- 3.08 geared rear
1.6 Roller Rockers / Adjustable Fuel Regulator with high flow pump / Open Air K&N Filter / TBI Spacer / ADS Super Chip & custom burned Off-Road Only chip / MSD ignition
Headers - Flow Master - dual chrome tips
adjustable Coni shocks & struts

 

My uncle mentioned that last weekend. He told me to get a new Holley 4 barrel for even distrobution

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1992 Pontiac Firebird
- 5.0L V8 TBI
- Automatic Trans