Exhaust valve stems turned white

[Clio.lee]

Is this normal or any idea what caused it.

All exhaust valves are white on all cylinders

 

[barnesautos]

I’d say your mixture is running a little to lean .

Black = Too Rich
White = Too Lean
Brown = Just Right


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[Clio.lee]

I’d say your mixture is running a little to lean .

Black = Too Rich
White = Too Lean
Brown = Just Right


Sent from my iPhone using Tapatalk

The car seems to be running ok I’ve only took the the engine out to change the cambelt and clutch and tidy a few bits up

No misfire or anything so unsure what could be causing it. I’ll get it back together and take it for a dyno to check the fuelling

 

[Brigsy]

Looks normal ish to be fair. Stick an afr gauge on and do some full throttle pulls to see what its like

 

[MicKPM]

On a car that’s this age, I’d not worry too much about it. If the compression is good and there aren’t other issues (leak down/oil consumption) I really wouldn’t worry.