[URL= ]Spark plugs[/URL]

Whats weong witg that guy on the end? Fouled maybe?

That one on the end doesn't look as bad to me as #2 and #6. What cylinders did they come from?

Back to your actual? The end one on far right doesn't appear to be firing.

Kinda hoping it wasnt .

How was the engine running prior to removing the spark plugs ?

Brand new motor. Sounded fine. Just didnt run what we expected

The one on the right looks wet. What kind of plugs?

Champions c59cx

just my imagination or an optical illusion, but where are the ground straps?

Dont know if its the pic but it looks like the plug gap is WAY to much. What did it run and what were you hoping for? What size motor and head is it? Yes the far right plug hasnt joined the firing party yet.

Shane Carr

It non extended reach strap plug, -9 heat range plugs, ao i couldnt really gap them.

Shane, its a 584 with RFD’s 24-B brodix heads. Was hoping mid 4.7x’s in tgis heat in my 1950 lb diamond. Im kinda hoping that plug was dead. Installing ngk -10’s. Call me later if you can 7705481040

as an experiment, install the equivalent NGK with a .030 gap. Then take two aspirin and report the results.

Installed the recommended ngk -10 to .032, and indexed them all! Will report back !

It’s Very tough to read plugs on alcohol to me. Fresh engine on alcohol can be difficult to get good ring seating sometimes. I always heated my engines up numerous times to 200 at home before I ever raced it. Without a dyno session it’s tough to figure whats wrong. I always ran NGK plugs and still do. Closed gap to .035 or less on Alcohol injection. I felt like it ran cleaner and no occasional miss that I sometimes heard with wider gap. Keep tuning on it....and heat it up !

I have been using NGK B9ES for almost 20 years.

Also found less gap is better, we run .035 or less.

^^x2 on injected and blown injected alky and few motors with small(under40%) load in tank. Never had problem getting reading that matched,temps and bearings. Other plugs never could get al 3 to match.

For best reading.Heat engine swap plugs make a pass.Pull up and back if can.and pull plugs.

Is this gas or alcohol carb or injection and take those champions and throw them in the garbage use ngk or autolite. If its injection it could just be washed from all the fuel injection dumps. My sparks with injection looks the same as your and nothing is wrong with it, leak test is good and so is the compression test. Just run it with good plugs, champion is junk.

Alky . And just put ngk -10’s in it. Fingers crossed that one plug wasnt contributing.

quote:

Originally posted by DRB Motorsports:
It non extended reach strap plug, -9 heat range plugs, ao i couldnt really gap them.

Shane, its a 584 with RFD’s 24-B brodix heads. Was hoping mid 4.7x’s in tgis heat in my 1950 lb diamond. Im kinda hoping that plug was dead. Installing ngk -10’s. Call me later if you can 7705481040

......10's will make matters worse......way to cold. Go the other way and start with 8's. To cold will read rich.