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SN95 Cobras
HELP: Dirtiest Valves I Have Ever Seen
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<blockquote data-quote="ZeroDCX" data-source="post: 15022098" data-attributes="member: 91953"><p>Your PCV naturally re-distributes oil vapor from the engine back through the intake, this with the combination of EGR gasses and no fuel flow from injectors and heat, results in what you see above. As numerous people, myself included, have stated in the past. Seafoam will not touch the secondary intake ports, it's more of a combustion chamber cleaner if anything. The only way to ensure the secondary valves remain clean is to do as you are now, tear down and clean manually. You could also install an oil separator in the PCV line and delete the EGR, assuming you're in a state that allows so as far as emissions. Yours are the worst I've ever seen though.</p><p></p><p>As far as cleaning, I would recommend Berryman's B-12 Chemtool and a toothbrush. Close the valve, pour a little in the port and brush away easily. Then use a shop vac to remove the undesirables or soak it up in rags.</p><p></p><p>Edit: Added pics.</p><p></p><p>There are mine prior to cleaning w/ Berryman's B-12 Chemtool:</p><p>[ATTACH=full]658602[/ATTACH]</p><p></p><p>Post Cleaning:</p><p>[ATTACH=full]658603[/ATTACH]</p></blockquote><p></p>
[QUOTE="ZeroDCX, post: 15022098, member: 91953"] Your PCV naturally re-distributes oil vapor from the engine back through the intake, this with the combination of EGR gasses and no fuel flow from injectors and heat, results in what you see above. As numerous people, myself included, have stated in the past. Seafoam will not touch the secondary intake ports, it's more of a combustion chamber cleaner if anything. The only way to ensure the secondary valves remain clean is to do as you are now, tear down and clean manually. You could also install an oil separator in the PCV line and delete the EGR, assuming you're in a state that allows so as far as emissions. Yours are the worst I've ever seen though. As far as cleaning, I would recommend Berryman's B-12 Chemtool and a toothbrush. Close the valve, pour a little in the port and brush away easily. Then use a shop vac to remove the undesirables or soak it up in rags. Edit: Added pics. There are mine prior to cleaning w/ Berryman's B-12 Chemtool: [ATTACH=full]658602[/ATTACH] Post Cleaning: [ATTACH=full]658603[/ATTACH] [/QUOTE]
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HELP: Dirtiest Valves I Have Ever Seen
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