What does white buildup on the back of exhaust valves signify?
01-26-2005, 03:07 PM
#1
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What does white buildup on the back of exhaust valves signify?
I took these pics when I did my turbo swap and just remembered so what causes this? I was running rich for a while so I'm assuming that is the cause. TIA
"<img src="http://img.photobucket.com/albums/v629/TomRitt/DSCF0120.jpg">"
"<img src="http://img.photobucket.com/albums/v629/TomRitt/DSCF0119.jpg">"
"<img src="http://img.photobucket.com/albums/v629/TomRitt/DSCF0120.jpg">"
"<img src="http://img.photobucket.com/albums/v629/TomRitt/DSCF0119.jpg">"
01-27-2005, 03:43 AM
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They were saying ethanol but told me to email Sunoco and find out
Heres a link if you want to see what they were saying<ul><li><a href="http://forums.vwvortex.com/zerothread?id=1799780">http://forums.vwvortex.com/zerothread?id=1799780</a</li></ul>
01-27-2005, 05:50 AM
#7
looks like mine...
I have yet to see a similar pic that didnt have white valves. I even saw an S4 head pic yesterday that had white valves. see my reply on vortex for car specific info.
<img src="http://www.modifieda4.com/images/k04-install/DSC00219.sized.jpg">
<img src="http://www.modifieda4.com/images/k04-install/DSC00219.sized.jpg">
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01-27-2005, 06:23 AM
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just about every engine ive taken apart has looked like that, or similar.
might be running slightly rich? not sure though. but running a lil rich is better than a lil lean, saftey wise anyway. My 400 hp chevy 350 looked like that, and i was told by a head shop its perfectly normal. so were the ford 5.0s in my boat, a 3.8 in my t-bird, 4.0 in my jeep, and others too.
