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  • Jeffrey Mader
    Jeffrey Mader

    Hesitation

    Hi Everyone.  Question.  I have a 1970 240Z.  At highway speed (60 mph) when I feather back on the gas pedal to keep constant speed I feel a slight bucking/hesitation.  Acceleration is fine....she pulls nicely.  It's when I back off accelerator.  It's annoying as hell.  Think it's a fuel issue??  Timing issue?  I try to ignore it but it's making me crazy.  I'm getting about 22 miles per gallon so I'm thinking she's OK.  I recently had valves adjusted and replaced plugs.  Would be great to get some ideas on what I should be looking at.  Thanks.


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     Can you hear the sound as well as feel it? My first guess would be the rear end mounts are worn and allowing the nose of the rear end to rise and fall during acceleration and deceleration. It's a common problem. 

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