Won't start and really loud backfire - Yamaha Forum : Your Yamaha Motor Products Community & Resource
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post #1 of 1 (permalink) Old 01-14-2018, 04:11 PM Thread Starter
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Won't start and really loud backfire

Hi All, I have an '87 XV400 that I am trying to restore.

The bike was running but with very poor throttle response and lumpy idle when I got it.

When I started the bike to allow it to get up to temperature the idle speed suddenly increases considerably. It the back fired loudly and cut out.

I decided to change the filters and oil before doing anything else at this stage.

Since then I have replaced the oil/air and fuel filters.

Now when I try to start the bike it will not tick over, is very reluctant to fire up and back fires like a gun has been shot.

Any ideas / help with what I should so next.

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NicNakz2112 is offline  


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