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Matt
Matt, Engineer
Category: Motorcycle
Satisfied Customers: 21482
Experience:  Honors degree in Mechanical Engineering, worked 8 years as a Formula 1 engine engineer.
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Triumph rocket3missing on small throttle opening

Customer Question

Triumph rocket3missing on small throttle opening
Submitted: 7 months ago.
Category: Motorcycle
Expert:  Matt replied 7 months ago.

Hello

I'd carefully check around all the airbox and throttle housing joints for signs of vacuum / air leaks

The best way to locate a leak is to have the engine running and warm and then spray lighter gas /propane or brake cleaner around each joint in turn. If the engine rev's up you've found your leak.

Now you might think that spraying lighter gas around a hot engine isn’t wise, however the flash /ignition point of gas is about 400°C so you need a naked flame or spark to set it off and I’ve used this method for many years without incident.

Work your way through each possible joint one at a time and you should find it. I use a slightly flattened piece of brake pipe and some rubber hose from the can of lighter gas to provide a spraying 'wand' and allow a direct blast of gas into each area, especially those difficult to reach with large implements.

Expert:  Matt replied 7 months ago.

Hi

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