Modern Motorsports Ltd Posted May 30, 2001 Share Posted May 30, 2001 intake removed and gasket surfaces all cleaned up, then took a flashlight to peek at intake valves..yikes! a few look like a silvery tinfoil crumpled surface on their backside and others are like a much bumpier blackish 'moonsurface' coating......that can't help airflow at all!! I assume gummed up from old dieselling issues I'd dealt with on the previous carb/intake setup?? Any way to safely clean these up?? I couldnt' help myself and scraped one valve lightly on the backside with a screwdriver tip and the carbon(I assume it's carbon/non metallic) 'crunched' off in some pieces....will vaccuum that out (this valve wasn't open....) should one spray anything in particular at these valves to help loosen that crap? carb cleaner or brake cleaner?? or........ thanks.....I was about to install the new intake and this has me sidetracked...should've ran carbcleaner through it before this , now I won't want it to kill my O2 sensor Quote Link to comment Share on other sites More sharing options...
Ray Posted May 30, 2001 Share Posted May 30, 2001 The only way I have ever cleaned ones that were that dirty were with a wire wheel with the heads disasembled... if it is really light you may be able to clean it with the motor running and run carb cleaner through it... If there is any real buildup I would pull the heads and clean them... Unless somthing really weird is happening you shouldn't have alot of carbon buildup unless the valve seals are leaking ????? Good luck... Quote Link to comment Share on other sites More sharing options...
Modern Motorsports Ltd Posted May 30, 2001 Author Share Posted May 30, 2001 I had some rather repetitive dieseling this past summer.....will likely run some ATF thru my fuel rail to clean it all like one cleans injectors easily. Hadn't thought of it earlier....valve seals etc were all new/replaced when I did springs etc a year ago. Quote Link to comment Share on other sites More sharing options...
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