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Cobra Forums
The Terminator
Engine/Tuning
the end of my cobra? help bad noises
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<blockquote data-quote="cobra=trouble" data-source="post: 12118229" data-attributes="member: 97878"><p>My guess IMO. Valve seat sounds like its loose. I had same problem. When cold did great #6was 30less then all others if I drove my car under no boost at all I never had a problem. But was my old more was warmed up. Just after 3/4 wot passes it would spit and sputter. When I got home comp. Tested again still 30psi low on #6 .after couple of months stressing. Dimly the car was running like crap.all the time comp tested.again #6 had 0 psi.take motor out exhast rocker jumped off.pulled head off and the seat.was.split and loose.bent valve in it hit the.piston.not.a.cheap fix</p><p>Wish you the best of.luck man!</p></blockquote><p></p>
[QUOTE="cobra=trouble, post: 12118229, member: 97878"] My guess IMO. Valve seat sounds like its loose. I had same problem. When cold did great #6was 30less then all others if I drove my car under no boost at all I never had a problem. But was my old more was warmed up. Just after 3/4 wot passes it would spit and sputter. When I got home comp. Tested again still 30psi low on #6 .after couple of months stressing. Dimly the car was running like crap.all the time comp tested.again #6 had 0 psi.take motor out exhast rocker jumped off.pulled head off and the seat.was.split and loose.bent valve in it hit the.piston.not.a.cheap fix Wish you the best of.luck man! [/QUOTE]
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The Terminator
Engine/Tuning
the end of my cobra? help bad noises
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