Question about Triumph Trident 750 Motorcycles

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On the road, won't start.

Was riding, 40 miles. Opened gas cap. 40 years a later the bike stopped.

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  • Triumph Master
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40 YEARS later???

If you mean every 40 miles you have to open gas cap to restart, the gas tank vent is clogged, not allowing air into the gas tank to replace the fuel leaving, creating a vapor lock.

Find the tank venting system, and clear.

Posted on Apr 19, 2014

  • 1 more comment 
  • Nicole
    Nicole Apr 19, 2014

    Ha! Meant 40 YARDS later!

  • Strech
    Strech Apr 19, 2014

    That makes more sense, as if the vent is clogged, I'd be surprised if you could make it 40 miles. In the header you listed it as a Triumph Trident 750. Give me a year and I could probably narrow down for you where the vent is.

  • Strech
    Strech Apr 19, 2014

    Then again, if it's a Trident, that's a late 60s-mid 70s. Remove gas cap. There should be a hole on top:$(KGrHqVHJB8FI!H8rJ+oBS!U4NPvHQ~~60_57.JPG And on bottom:$(KGrHqJHJBYFHydeggWtBS!U4WgKkw~~60_57.JPG Blow through the hole on top, and air should fairly easily exit through the hole on the bottom. If not, try another gas cap.


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SOURCE: no fuel to carb, I think..

I would check the vacuum line that opens the fuel feed valve. It's located right under the fuel shutoff valv and is fed by the #2 carburetor.

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It could be that you have to much oil in the crank case. I overfilled mind and my son could not ride his machine behind me, due to the smoke. Otherwise drain the carb (small bolt under the float chamber. Good Luck

Posted on Aug 29, 2009

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