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Title: Throttle Thump Post by: theoneillusion on October 02, 2013, 01:42:00 PM 2008 S4RS. A few days back I blipped the throttle and was suprised to hear a thump sound, similar to launching a bottlerocket out of a tube. I thought it was odd but carried out. Today the same thing happened. Stopped and blipped the throttle with the first resulting sound being the thump sound. Any ideas?
Title: Re: Throttle Thump Post by: stopintime on October 02, 2013, 03:17:17 PM Vacum somewhere? Airbox, filter, throttle bodies, intake manifolds, tank ...
Obstruction? Crank case breather, shooting rats out of the exhaust ... No experience, just trying to think here :P Title: Re: Throttle Thump Post by: Speeddog on October 02, 2013, 04:25:08 PM Makes a "Kuunk" sound from the airbox?
Generally indicative of lean fueling or due for valve clearance adjust. Title: Re: Throttle Thump Post by: theoneillusion on October 03, 2013, 06:44:26 PM Ruh roh, you may just be right about the valve clearance. I know I'm due for it, just was waiting for winter to roll around.
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