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Join Date: Dec 2009
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Rough Running

Took my car out today and it ran real bad,when going up hill's there was no power and made a real rattle noise, the exhaust sounded like it was blowing when you accelerate,it.s a 1.7 on twin carbs ,it ran fine yesterday,any ideas what could be happening
Old 09-07-2014, 11:44 AM
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Check your ignition timing. Also check for vacuum leaks. If the rattle is pre-ignition, it could be very bad for your engine in the long term. Pre-ignition could be caused by the timing being overly advanced, or the fuel mixture being very lean, or other less-likely causes.

Check the valve lash. A rattle could be loose valve gaps.

--DD
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Old 09-07-2014, 04:38 PM
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