Spark plug color

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RickDizzle

RickDizzle

Isaiah 41:10
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Friends! Working on tuning today and looked at the plug color chart...I know that isnt all the data I need but wanted your thoughts.
This is the plug I broke in with and just pulled.
20201108_151624.jpg
20201108_151630.jpg

Threw a new plug in and ran 5 full throttle passes then immediately shut it down and pulled the plug. This is it:20201108_151512.webp
20201108_151523.webp
20201108_151543.webp

Truck still feels to be bogging on top end...thoughts?

Thank you!
 
Looks kinda lean on the second one, but the top just shows over all tune. First plug is a tad on the fat side. Idk, I started cutting them to check.
It's odd at your current state of tune that your top end hasn't picked up. You had it leaned out fairly good from the factory spec.
 
40:1 Dominator is what I am running. I have heard its best to run that at 50:1, maybe post this gallon Ill go 50:1. Its still spitting a good amount out all over my rear shock lol.
 
First one looked way better than the rest honestly. Check for air leaks on the fuel lines. If its smoking like hell at idle it will be boggy up high..if I let my truck idle for awhile its smokey and boggy until it clears out. If it gets worse turning the needles one way go the other way and see if it gets better
 
Rep732 said:
First one looked way better than the rest honestly. Check for air leaks on the fuel lines. If its smoking like hell at idle it will be boggy up high..if I let my truck idle for awhile its smokey and boggy until it clears out. If it gets worse turning the needles one way go the other way and see if it gets better
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UMM which way ?? In = LEAN out + Fat/rich , if it is spitting oil you might have measured your mix wrong ? I killed a Kart motor by accident doing that , $600 screw up
 
I use a ratio right cup and measure my 40:1 per gallon using that so I feel that is correct. No issue there. I noticed if I let the tank run down to about 1/4 the truck bouncing does tend to suck a tad of air through the fuel filter pick up line. So I shut her down now around 1/4 and fill it back up.
This is after running about 1/2 gallon today, 40:1 the entire time. This is what my shock looks like next to my exhaust lol...20201108_185054.jpg

Also found this a lil odd. Doing my after run deep clean and found oil sprayed on the inside of the left frame. Exhaust connections look clean w nothing on them..still seeing oil coming from possibly the head?
20201108_191506.webp
20201108_191542.webp

This screw driver is pointing to where it was sprayed all over in that first pic of it sprayed on the frame. These pics are for better reference as it gives reference points.
20201108_192942.webp
20201108_193001.webp


Thoughts?
 
Last edited:
RickDizzle said:
I use a ratio right cup and measure my 40:1 per gallon using that so I feel that is correct. No issue there. I noticed if I let the tank run down to about 1/4 the truck bouncing does tend to suck a tad of air through the fuel filter pick up line. So I shut her down now around 1/4 and fill it back up.
This is after running about 1/2 gallon today, 40:1 the entire time. This is what my shock looks like next to my exhaust lol...View attachment 65867

Also found this a lil odd. Doing my after run deep clean and found oil sprayed on the inside of the left frame. Exhaust connections look clean w nothing on them..still seeing oil coming from possibly the head?
View attachment 65868
View attachment 65869

This screw driver is pointing to where it was sprayed all over in that first pic of it sprayed on the frame. These pics are for better reference as it gives reference points.
View attachment 65870
View attachment 65871


Thoughts?
Click to expand...
is it NEW oil ?? that looks weird to me , these guys will know better but it looks like your mixture is off ??
 
buzzkill said:
is it NEW oil ?? that looks weird to me , these guys will know better but it looks like your mixture is off ??
Click to expand...
100% new Amsoil Dominator mixed 100% correct. A couple engine builders I spoke with think I have an exhaust leak on the header side. Also concurring that it would give me issues tuning the top end like I have been seeing. What torque value should I torque the exhaust bolts too, both to the engine and to the pipe? Also any thoughts on running gasket maker on these if that is the case?
Rep732 said:
1st plug it was rich and had oil the other plugs like sean said look lean
Click to expand...
Thanks brother I feel confident that is the case too!
 
I use the copper exhaust gasket from ddm and not once have the bolts backed out....when i was using the composite fiber ones they would loosen up on me... but thats small bore I believe @RickDizzle your big bore right? I'd try and find a copper gasket for your exhaust flange or make one
 
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