99 yamaha vstar 650 - Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum
 
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post #1 of 6 (permalink) Old 05-07-2016, 10:19 PM Thread Starter
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99 yamaha vstar 650

I have a 1999 yamaha vstar 650. Ithe seems to be popping and back firing while at low speeds and it will pop once in a while while idling. I've had my carbs cleaned, new sparkplugs,and new air filter. I'm at a loss. If I'm running too rich or too lean I'm screwed cuz the last owner stripped the adjustment screws on the carbs. I'm supposed to be going on a longoing ride next month and want it running right before I go. Thanks and please help!!!!
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post #2 of 6 (permalink) Old 05-08-2016, 09:27 AM
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I have a 1999 yamaha vstar 650. Ithe seems to be popping and back firing while at low speeds and it will pop once in a while while idling. I've had my carbs cleaned, new sparkplugs,and new air filter. I'm at a loss. If I'm running too rich or too lean I'm screwed cuz the last owner stripped the adjustment screws on the carbs. I'm supposed to be going on a longoing ride next month and want it running right before I go. Thanks and please help!!!!
which adjustment screws are stripped, the plastic pms ones? and what your set up ? pipes & intake

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post #3 of 6 (permalink) Old 05-08-2016, 02:40 PM
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post #4 of 6 (permalink) Old 05-08-2016, 07:14 PM Thread Starter
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I have cobra pipes and a hyper charger. The brass screws for fuel adjustment are stripped
post #5 of 6 (permalink) Old 05-08-2016, 08:29 PM
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I have cobra pipes and a hyper charger. The brass screws for fuel adjustment are stripped
you might want to have a machine shop get those screws out for ya so you can replace em, anything short of doing that you'll never get carbs adjusted to work correctly, those screws affect the performance from idle up to 3/4 throttle.

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post #6 of 6 (permalink) Old 05-08-2016, 08:39 PM Thread Starter
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That's the problem, the yamaha dealer said they can't get them out
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