yo2001 Posted October 4, 2002 Share Posted October 4, 2002 again. I think. I have not taking them out yet but I looked through the exhaust ports and the exhaust valves were white like a snow. I think my plugs were in wrong heat range (denso no.11 I think) and it was over heating the exhaust gas. but the header is not white at all just the valves and the sleeves in the ports. I'm not running lean as much as I know because the intake valves were wet and have some carbon deposits. Also, my A/F ratio gauge is over 1 v. at WOT. Well, could this be from 1. running high octane gas all the time (93 octane) 2. too much timing. 2-3 deg over the stock 3. wrong heat range plugs 4. all of the above. Quote Link to comment Share on other sites More sharing options...
Lockjaw Posted October 4, 2002 Share Posted October 4, 2002 Plugs and mixture. Quote Link to comment Share on other sites More sharing options...
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