Game: Read this plug

[CarlB]

Anyone want to try and do some reading? Figured some folks here would enjoy.

This plug is indicative of the other cylinders.
30k miles
NGK iridium, (non laser version)

I'll save some of the other details since they might spoil the folks trying to read this plug.

Edit: explain your answers

 

[SC Maintenance]

Ooof!

Running way rich or the plugs are not hot enough.

 

[CarlB]

Ooof!

Running way rich or the plugs are not hot enough.

Interesting, what makes you say that? Guess I should have mentioned to explain your answer

 

[SC Maintenance]

Interesting, what makes you say that? Guess I should have mentioned to explain your answer

Well, its approximately the right tanish color but all the residual particles tend to indicate something is not getting completely burned. If it was oil not getting burned then it would be black?

ie I am guessing.

 

[shortyb]

Massive amount of octane booster? (MMT) My guess due to color of the plug.

 

[Kira]

Does the OP even know?

 

[CarlB]

Does the OP even know?

Yes.

 

[SC Maintenance]

Yes.

We shall see

 

[Kira]

I'm with post 5....some excess of additive.

 

[DCDG]

I'm dirty and fouled you

 

[martinq]

Looks much dirtier than I would expect for a "modern" EFI engine w 30k on the plug. Plug held up very well, if it was cleaner I'd be okay running it for another 10k-30k after touching up the ground strap.

Excellent pic by the way, thank you!

 

[PandaBear]

Someone tuning their fuel too rich in a turbo car?

 

[Mainia]

My guess, is this car also running leaded fuel?

 

[2strokeNorthstar]

Marine engine? 2 stroke oil and water?

 

[CarlB]

The votes of rich and forced induction are interesting. I think those folks should elaborate how they arrived there.

 

[crashz]

I'm guessing old or bad gas and run hard. Honestly just a guess, never saw red clay looking plugs before.

 

[SC Maintenance]

The votes of rich and forced induction are interesting. I think those folks should elaborate how they arrived there.

You keep saying this. What do you mean - how we got there.? How do you think we go there? We looked at the plug?

The sum total of the input we received from you is a picture of a plug with 30K miles and indication that all the plugs look the same - ie its not likely a bad plug.

Could be a weak coil - if its an old car with a single coil. I sort of doubt it though. I think it would be black not tan / red.

Your taking all the fun out of this.

I hope this is not something stupid like you ran seafoam or paint thinner.

 

[TCL]

Start of melting the pistons?

 

[K2K2]

30,000 miles on an old car which has been sitting for a long time.

 

[Arc]

Looks like rust to me. Old car started after sitting for a long time. Or a blown head gasket. Either way I see rust.