What Happened To My Diaphrams??? (Pictures Included) - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 6 (permalink) Old 06-30-2009, 02:46 AM Thread Starter
 
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What Happened To My Diaphrams??? (Pictures Included)

'95 Vulcan 750

So after extracting 4 out of 6 bolts that hold the carbs to the float chamber I finally got the carbs opened and started cleaning. Here are my questions and I'll tackle each one in detail:

1.) What cased my diaphragms to look like this?
2.) What would be the consequence of worn diaphragms like this?

1.) What cased my diaphragms to look like this?






This is what I found. I noticed that the cover for this chamber had a screw missing as shown here...



and the OTHER carb had the o-ring missing. Could this contribute to the messed-upness of the diaphragms?




2.) What would be the consequence of worn diaphragms like this?

I took apart the carbs to clean because I was getting random increase and decrease of power with acceleration. Could these ribboned - melted - whatever diaphragms be a contributing cause?


Thanks everyone.
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post #2 of 6 (permalink) Old 06-30-2009, 08:46 AM
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in short your answer to number 2 is yes.
I can't believe you weren't having any other problems. for your first question...any number of things could have caused it... most likely would be fuel sitting in the carbs for excessive amounts of time. Ethanol fuel could also contribute to the problems. Even water.
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post #3 of 6 (permalink) Old 06-30-2009, 09:58 AM
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Maybe someone used something for a fuel additive that they shouldn't have? Don't know, but I'd say it was a miracle that the thing ran at all!

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post #4 of 6 (permalink) Old 06-30-2009, 10:17 AM
 
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Quote:
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Maybe someone used something for a fuel additive that they shouldn't have? Don't know, but I'd say it was a miracle that the thing ran at all!
2x....some heavy duity carb cleaners deterorate rubbber. usually the stronger ones that contain acetone or Methylene Chloride.
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post #5 of 6 (permalink) Old 06-30-2009, 10:40 AM
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1. constant usage.

2. she could become "knocked up"! lol


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post #6 of 6 (permalink) Old 06-30-2009, 06:03 PM
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It`s bad drugs Syntax. I definately agree with slim, fergy and dutter, it is chemical and not mechanical sculdugery messing up your carbs. With diaphrams that look like those do, you must have been running on a prayer and a hope.

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