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post #1 of 10 (permalink) Old 08-09-2008, 12:11 AM Thread Starter
 
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running lean

took the vulcan to a mech yesterday and he told me today that 2 of the cylinders are running lean and he has to find out where its sucking air from.Anyone ever experience this and have any suggestions?Thanks in advance
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post #2 of 10 (permalink) Old 08-09-2008, 05:01 AM
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That depends; which two cylinders are lean, does he know? And there are a couple places they could be sucking air...

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post #3 of 10 (permalink) Old 08-09-2008, 08:43 AM
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That depends; which two cylinders are lean, does he know? And there are a couple places they could be sucking air...
That is a tough question... Should be some tests he could run to determine which 2 cylinders...... The devil makes me say things sometimes......lol...
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post #4 of 10 (permalink) Old 08-09-2008, 09:25 AM
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... The devil makes me say things sometimes......lol...
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post #5 of 10 (permalink) Old 08-09-2008, 11:39 AM
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took the vulcan to a mech yesterday and he told me today that 2 of the cylinders are running lean and he has to find out where its sucking air from.Anyone ever experience this and have any suggestions?Thanks in advance
About the only two places that the two only cylinders would be sucking air that is unwanted, is at the clamps that are between the carbs and the engine. Unless the rubber boot is ruptured, or a vaccuum line is off. Such as the one to the reed valve control (rear carb) or the petcock control (front carb).

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post #6 of 10 (permalink) Old 08-09-2008, 03:36 PM Thread Starter
 
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found it

2 of the jets in the rear carbs were clogged.Mech told me he had to loosen and tilt the engine to get at the carbs.Wow alot different than what i was used to Thanks guys
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post #7 of 10 (permalink) Old 08-09-2008, 04:55 PM
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Welcome Dman,

Just to make it clear, Vulcans only have 2 cylinders, and two carbs. One front one back. And I can't think of a reason the engine would have to be tilted to pull the carbs. I think your tech was taking you for a ride. How many hours did he charge you?

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post #8 of 10 (permalink) Old 08-09-2008, 11:19 PM
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Ouch! Dman, I would be leery of using this mechanic. Maybe he saw 4 plugs and got confused, but most decent mechanics would know a v-twin by the sound if not by the sight... Plus, you don't have to tilt the engine to get at the carbs. Weird!

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post #9 of 10 (permalink) Old 08-09-2008, 11:24 PM
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An engine tilt is 9/10 of an engine pull. Not a short procedure. It takes about a day to do and that doesn't count reinstall. I hope he meant something else but I have my doubts since he didn't even know how many cylinders the thing has. Our bikes do have 4 spark plugs, two per cylinder. The uninformed may assume 4 cylinders from that but an experienced mech should not. The Honda Shadow is the same way, 4 plugs, 2 cylinders.

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post #10 of 10 (permalink) Old 08-10-2008, 08:58 AM Thread Starter
 
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explain

I think I explained what he said a little distorted guys.I am an air cond mech just getting back into the bike world after 25 years away.He fixed it for a fair price and showed me digital pics of his work in stages.Thanks for the responses and enjoy your ride today.Sunny high of 80 degrees and 40 % humidity cant wait to ride!
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