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Old 09-23-2008, 09:48 AM   #1
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Default yamaha royal star intake leaks

last year I had bad vacuum leaks at the base of all carbs. I installed ALL new manifolds which helped alot, but I still can stall the engine by carefully spraying choke cleaner at the base of the carbs.what else can I do to get rid of the leaks? Any suggestions appreciated. Has anyone heard of this before -venture or v max owners???

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Old 09-23-2008, 10:02 AM   #2
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Pull the heads and have the intake manifold mating surface planed.
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Old 10-03-2008, 07:02 PM   #3

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Get some JC Whitney Spray-O-Seal in a can. Spray everything but the seat and you should be OK. Hell, spray the seat too in case it starts leaking, be safe. Be sure. Be happy.
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Old 10-03-2008, 11:35 PM   #4
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If this bike uses the rubber insulator boots - you have obviously not seated something properly.

How new were the "new" boots you installed?

Are the metal bands tightening around the carb and intake-throat properly? Some have a particular place for the band (and for that matter the insulator too) or they won't seal.

One last thing - is it possible they've been tightened TOO much and you're distorting the carb or intake a bit, causing a bad seal?

If the carb bolts-up directly, could be like Whirlpool sez: the mating-flange is distorted on the intake or the carb, or both.

Hard to diagnose these things long-distance.

Good Luck.
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Last edited by The_AirHawk : 10-03-2008 at 11:38 PM.
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Old 03-04-2009, 05:17 AM   #5
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It sounds that there must some be problem in float seating.Also there is a change of fuel line or vacuum leaking.See the fuel tap or switch it to PRI to find where it is liking from.Can do the dressing.
If things does not go well dont delay to contact a mechanic.
Good luck.
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Last edited by Roccker : 03-04-2009 at 05:19 AM.
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Old 03-04-2009, 06:01 AM   #6
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Sounds like the problem is a Royal Biotch.
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