Raptor 700 popping and backfire with PC V. - Yamaha Raptor Forum
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post #1 of 3 (permalink) Old 08-28-2019, 03:36 PM Thread Starter
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Join Date: Jul 2018
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Raptor 700 popping and backfire with PC V.

Having problem recently with my 2008 Raptor 700 SE. Until last week everything worked fine, but now the bike started to pop and sputter a lot.
When cold engine, it's quite hard to start, engine dies after few seconds,
when warmed it's popping and sputtering a lot.

Battery is good, TPS new, spark plug new. Maps on PC V changed.

When removing PC V, the bike runs fine again. Does PC V gets wrong readings?
Where should I look, what to measure?
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post #2 of 3 (permalink) Old 08-29-2019, 09:07 PM
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Check the adjustment of the TPS.

You may have to re-map the PC5. Check for corroded or recessed pins on the connectors.

Did you pressure wash it? Some times water will short the TPS.

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post #3 of 3 (permalink) Old 09-16-2019, 03:47 AM Thread Starter
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Hello. Thanks for the answer, Dezperado. Seems that I found what caused that. It was bad connection in connector on injector and/or on air intake tube. Now it runs fine again.
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