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Fox-Body Cobras
Help! My Cobra is bucking and popping over 5000 RPM!
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<blockquote data-quote="TcM-668" data-source="post: 108232" data-attributes="member: 2854"><p>Sounds like you might have a valve spring going bad, and allowing the valve(s) to float. </p><p></p><p>I would do plugs, a set of wires, rotor and distributor cap, and recheck the timing. Try replacing the fuel filter too. If you have a fuel pressure gauge, check the presssure too.</p><p></p><p>It could be spark scatter too. Hook up a timing light and rev it up to around 3500-4000 rpm and see if the timing jumps around on you. If so, then the bushings in the distributor could be going south. the other thing could be the ignition module on the distributor.</p><p></p><p>Beyond that, I dunno...</p><p></p><p>Good Luck...</p><p></p><p>Don...</p><p></p><p>00 R # 152</p><p>93 GT Conv</p><p>93 LX Coupe</p><p>92 Honda Accord EX Wagon</p><p>89 Isuzu I-Mark Hatch SunSport</p></blockquote><p></p>
[QUOTE="TcM-668, post: 108232, member: 2854"] Sounds like you might have a valve spring going bad, and allowing the valve(s) to float. I would do plugs, a set of wires, rotor and distributor cap, and recheck the timing. Try replacing the fuel filter too. If you have a fuel pressure gauge, check the presssure too. It could be spark scatter too. Hook up a timing light and rev it up to around 3500-4000 rpm and see if the timing jumps around on you. If so, then the bushings in the distributor could be going south. the other thing could be the ignition module on the distributor. Beyond that, I dunno... Good Luck... Don... 00 R # 152 93 GT Conv 93 LX Coupe 92 Honda Accord EX Wagon 89 Isuzu I-Mark Hatch SunSport [/QUOTE]
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Help! My Cobra is bucking and popping over 5000 RPM!
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