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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
Worn Valve Seals?
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<blockquote data-quote="Gturo_5.0" data-source="post: 16118266" data-attributes="member: 193662"><p>How common is it for coyote motors to get bad valve seals? My cyl 8 keeps misfiring and fouling the plug. I changed the coil and nothing. At first i was scared it was my piston ring but the symptoms are pointing towards valve seals. The only time i see any smoke from my exhaust is a quick puff when i turn it on in the morning. Its also intermittent so it will be misfiring pretty bad and if i turn it off for a minute or two and turn it back on, it runs fine again. I think im burning a bit of oil too. So what do you guys think? Car has 92k miles</p></blockquote><p></p>
[QUOTE="Gturo_5.0, post: 16118266, member: 193662"] How common is it for coyote motors to get bad valve seals? My cyl 8 keeps misfiring and fouling the plug. I changed the coil and nothing. At first i was scared it was my piston ring but the symptoms are pointing towards valve seals. The only time i see any smoke from my exhaust is a quick puff when i turn it on in the morning. Its also intermittent so it will be misfiring pretty bad and if i turn it off for a minute or two and turn it back on, it runs fine again. I think im burning a bit of oil too. So what do you guys think? Car has 92k miles [/QUOTE]
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2011-2014 Mustangs
Engine/Tuning
Worn Valve Seals?
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