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rough idle on cold Ecomoo

Taranaki

Member
Joined
Oct 17, 2013
Messages
52
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2
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Location
New Plymouth
Members Ride
Calais
A high-mileage VT is hard to start from cold, and idles pretty slow. But when you put foot on brake, the idle goes up to normal RPM. I would suspect a vacuum leak. But I check all the hoses - PCV, fuel regulator, purge valve, ventilation controls and brake booster. All looks okay.
So what else could be wrong?
 
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