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bake

WR 400..... backfiring, stalling

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Tonight on the way down the mountain my bike started acting up, it's backfiring and stalling.

At the bottom I tried to open it up on flatter ground and it started accelerating nice then nothing, motor stalled wouldn't refire. Any ideas?

bake

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Dirt in the float bowl? Tight valves? Mine did that one time with a resticted main air jet (too much filter oil). :thumbsup: Good luck

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Hi,

I had the same problem on my 98 WR400 during a weekend of wet-weather riding... turned out to be lots of water and cr*p in the carb, especially in the Acc. pump bowl. Take some compressed air to your jets and it should be fine...

Kevin

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cr&p in the carb ???

check your fuel filter

check your breather hoses & reroute one of each assembly to the air box to avoid sucking crap into it from water etc.

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Try changing your spark plug :thumbsup: My 99 acts similarly to what you are describing when the plug gets fouled. I change my plug and all is well. Just my .02

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