Engine revs rising when air lever opened

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GaryK
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Re: Engine revs rising when air lever opened

Postby GaryK » Thu Jun 06, 2019 1:50 pm

Hi James

I have not spent much time working on the bike as other things always seem to crop up.

Just recently I checked the timing which was a little out, and I have re-timed it, but still not running correctly.

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alan.moore
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Re: Engine revs rising when air lever opened

Postby alan.moore » Thu Jun 06, 2019 3:01 pm

James,
You haven't mentioned whether you have made sure there is no leak between the carb and the intake flange on the cylinder head. It is not uncommon for the alloy carb flange to get a warp in it causing air to be sucked in at the joint. This will give the symptoms you describe.

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Alan
1939 VH Redhunter;1942 RN WNG;1951 Triumph 6T Thunderbird;1970 BSA B175 Bantam;1986 Yamaha SRX600 single
http://cloggymoore.wix.com/triumph-pre-unit-6t

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James Hickman
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Re: Engine revs rising when air lever opened

Postby James Hickman » Thu Jun 06, 2019 7:06 pm

Yes I have - but will replace the gasket anyway. However I still need to decide what to do about the cylinder head leak...

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dave.owen
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Re: Engine revs rising when air lever opened

Postby dave.owen » Fri Jun 07, 2019 6:13 am

Have you checked for wear on the inlet guide, could give similar results
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