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What does this plug tell you

Posted By: Stroker Scamp

What does this plug tell you - 01/19/14 09:47 PM

Here is a pic of my #8 plug, engine was started last month, not sure if you will be able to see in the pic but it almost looks like rust
Thoughts?

Attached picture 8003984-20140119_113929_LLS.jpg
Posted By: MR_P_BODY

Re: What does this plug tell you - 01/19/14 10:18 PM

Was it fired up with unleaded fuel... but its dog rich
E-85 will give it a yellow/gold color
Posted By: ta3834bbl

Re: What does this plug tell you - 01/19/14 11:27 PM

Tells me that you are going to have a pretty bad miss , until you put it back in.

Ok seriously, I'm guessing that you have had some hi-humidity in the engine compartment and maybe that intake valve was open letting the wet mix in ???
What did the other plugs look like ?
Posted By: Stroker Scamp

Re: What does this plug tell you - 01/21/14 02:30 AM

all the other plugs look about the same color this one just had the rust like corrosion
I had a dominator on it and had it jetted at 86 squared so that's why I think I was fat
I was just a little worried about the moisture deal as it was the first time I have ever had this issue, might do a leak down just in case
VP C12 is in the tank
Posted By: Thumperdart

Re: What does this plug tell you - 01/21/14 03:09 AM

Is that from idleing? If so, you need to work on the idle circuit plus a p/v is your friend..........
Posted By: MR_P_BODY

Re: What does this plug tell you - 01/21/14 03:22 AM

Quote:

all the other plugs look about the same color this one just had the rust like corrosion
I had a dominator on it and had it jetted at 86 squared so that's why I think I was fat
I was just a little worried about the moisture deal as it was the first time I have ever had this issue, might do a leak down just in case
VP C12 is in the tank




IF it was rust.. your engine is rusting to death
right before your eyes... no I doubt that... fuels
will a LOT of times leave a hue on the plugs... yours
might be because its dog fat.. I would suggest a PV
and jet down on the primaries to get it leaned out
Posted By: Stroker Scamp

Re: What does this plug tell you - 01/21/14 04:14 AM

I have sent out my A/F meter to get looked at and I am going to put the 950 back on and most likely switch over to E85
And yes that was just ideling with a couple throttle whomps
Posted By: racerhog

Re: What does this plug tell you - 01/21/14 05:30 AM

Wrong heat range plug.....
Bad Fuel.....
Turn the 4 corners in 1 turn each....
Posted By: dOc !

Re: What does this plug tell you - 01/21/14 05:35 AM

That gives PIG FAT new meaning ... you could washing-the-rings leaving it like this ...
Posted By: Brian Hafliger

Re: What does this plug tell you - 01/21/14 05:58 AM

Does the engine still smoke?
Posted By: Stroker Scamp

Re: What does this plug tell you - 01/21/14 07:03 AM

no smoke from the engine, but wanting to get this thing a bit more street friendly by loosing the dommy for now its a 3 circuit
Posted By: MR_P_BODY

Re: What does this plug tell you - 01/21/14 07:10 AM

Quote:

no smoke from the engine, but wanting to get this thing a bit more street friendly by loosing the dommy for now its a 3 circuit




You can go with the smaller carb or maybe you know
someone with a 8082 1050 to borrow OR change your 3
circuit over to a 2 circuit... I've never had a hard
time getting any of the 3 circuit doms to idle.. even
without a PV... mid is the problem point
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