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Author Topic: piston 89 stang gt ¯ Member # 1877 posted                              sometimes when i start my car and give it a little gas it makes a thud noise like a mis fire or somthing anyone now how 2 fix it Posts: 97 | From: roseville | Registered: Sep 2002  |  : Blind 2.3L CAFords OG Member # 3052 posted                              where does the sound come from? what kind of a pop is it? what's your timing at, what's the fuel pressure at, have you pulled the plugs? it could be hydrolocking from a blown headgasket. it could be backfiring from running rich when it's cold it could be an intake backfire from the timing being off, or the pcv being loose or missing. -------------------- 89 LX Notchback ex 4cyl, 14psi 02 Harley F150, 15psi Posts: 8521 | From: Fairfield | Registered: Jul 2003  |  : 92stangLX ¯ Member # 3252 posted                              I would start by checking all of your ingition wires and your distributor cap. Next check your fuel pressure. Is it a mis-fire or is it knocking? Posts: 5302 | From: San Francisco | Registered: Sep 2003  |  : JohnB Tech Moderator Member # 969 posted                              This is reallllllly random. Try to be a bit more specific, as your current problem could be literally anything. -------------------- 1965 Shelby Cobra 1993 Cobra 2012 F150 Raptor 2020 GT500 Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002  |  :

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