Worn throttle shaft channels can also cause the revs to be higher than
normal owing to the extra air that enters the carb around the shafts.
Joe
-----Original Message-----
From: triumphs-bounces@autox.team.net
[mailto:triumphs-bounces@autox.team.net] On Behalf Of TR250Driver@aol.com
Sent: Saturday, June 05, 2010 10:17 AM
To: tr4a2712@yahoo.com; triumphs@autox.team.net
Subject: Re: [TR] Hi RPM's
In a message dated 6/5/2010 10:12:21 A.M. Eastern Daylight Time,
tr4a2712@yahoo.com writes:
Question: What's causing this to happen?
Sounds like you have a piston sticking up in one or both of the carbs,
possibly dirty. Check by taking the piston up and see if it falls down and
clicks when it hits bottom. You may need to run some carb cleaner thru.
Another way to tell is to pull the dash pot plug and put it back on, if the
idle goes down your piston was stuck.
Darrell
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