took out spark plugs and one had rust?

[stuffy1256]

i took out my spark plugs today to do a compression check and i looked like one of my spark plugs had what looked like rust.....how could this of happened? also my results of my compression test 190-175-170-165 is this ok? 190 seems kinda high

 

[TalonRacer18]

sounds good to me. It doesnt matter if it is high. The higher the better.

 

[wannabeDSMer]

I just read in another thread that 190 is way too high and not accurate and that there is probably too much carbon build-up in that cylinder. Also said that the head needs to come off and the cylinder needs to be cleaned with chemicals.

 

[19Eclipse90]

They sound alright to me. Mine were 185, 0 (valve isn't working correctly), 185, and 185.

 

[PogiTSI]

Was it Rust Flakes???? or was it just Redish Brownish color??? that wouldnt be Rust. is there Rust in ur oil????

 

[stuffy1256]

redish brown....i just assumed it was rust

 

[PogiTSI]

nah man, Redish Brown doesnt mean Rust. It needs to be replaced, Its Worn, I think Redish brown means its getting to hot, its overheating. Like To much Boost not enough Gas. And running Lean. Pre Ignition. heres a Websight, does it look like that? or close to it?http://www.ngkntk.com.br/site_ingles/direct/p15.html

 

[PogiTSI]

also, I noticed you have a GST. do you have a boost controller??? You may be doing some damage. You boost may be to high. that can also cause overheating of the plug. if its the same, Try getting Colder Plugs. better wires. Im sure you already know this, but Turbo cars are very particular, and one small thing can really Screw it up. heh.