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Posted on Mar 16, 2009
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FXR suzuki 150 will idle but wont rev

Bike was going fine sat in garage for 4-5 weeks started fine got 2 ks down the road and died. Cleaned out carb put new plug in it now starts instant idles great but as soon as you try to open the throtal it coughs and dies. On full choke it will rev but as at idle will die when trying to open throtal

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  • tassiedevil8 May 06, 2009

    I had a similar problem, starting and idling was fine, and upto about half throttle the engine was consistent. Full throttle and everything died (engine flooding). In the end, it was the needle and seat within the carburettor - specifically, the needle cone was made of rubber and had reached its lifetime. Try a new needle and seat replacement, or just buy a new carburettor (replacement carb will cost about the same as needle and seat replacement anyway).

    Check your exhaust when starting - if it it sooty black, chances are you are looking at engine flooding and need a new needle. Engine flooding is a very common problem with carburettors on engines left unused for long periods of time.

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  • Posted on May 25, 2009
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Clean the fuel tank, fuel hose and fuel valve.

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  • Posted on May 18, 2009
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I had the same problem ! i dont know how but there was water mxit in my tank and i dumpd the fuel then it was fine

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