Air Filters...bike running rich? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 17 (permalink) Old 01-06-2014, 06:22 PM Thread Starter
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Air Filters...bike running rich?

Noob here, been on my 750 for a couple months now, had a 500 before.
So, I replaced the air filters on the bike, the ones that were in there when I bought it were in terrible shape. Ever since the bike has been incredibly hard to start, sometimes not even turning over until it eventually loudly pops and gets started. Also, mileage has been bad since, and it will sometimes lose rpms until it stalls at stoplights. I suspect the air filters because it only started then, but I'm not sure. Could I have clogged them with too much oil, would that make that much of a difference? Or could my problem be electrical?
Thanks for your opinions!
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post #2 of 17 (permalink) Old 01-06-2014, 06:54 PM
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Welcome to the chaos. How did it run before you put the new filters in? If it ran well, if try pulling the filters and clean them. If you're going to oil them, do so lightly.

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post #3 of 17 (permalink) Old 01-06-2014, 07:48 PM
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Welcome to the family.get an agm battery.that'll make starting easier.when it stalls out is it running on one cylinder? The float needle could be dirty and not closing all the way, causing it to flood

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post #4 of 17 (permalink) Old 01-06-2014, 07:50 PM
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I personally never liked oiled filters....I like the washable new type media. Oiled filters dates back to the 20's, lol....
Try removing the filters and take a short ride....some aftermarket elements are way too restrictive....if runnin w/o the filters helps, wash the oil out and try runnin em dry...



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post #5 of 17 (permalink) Old 01-07-2014, 02:25 PM
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If it still runs poorly with the filers cleaned, I would suspect that a piece of foam from the old filers made it's way into the carbs and could be causing the problem.
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post #6 of 17 (permalink) Old 01-07-2014, 02:45 PM
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Quote:
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If it still runs poorly with the filers cleaned, I would suspect that a piece of foam from the old filers made it's way into the carbs and could be causing the problem.
thats what i was thinking or else the previous owner richened the fuel mix because the old filters were lettin in too much air

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post #7 of 17 (permalink) Old 01-07-2014, 05:36 PM Thread Starter
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Thanks guys! Still running poorly after a second clean. Might have to clean the carbs, but I'm going to try to rule out any electrical first.
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post #8 of 17 (permalink) Old 01-07-2014, 08:40 PM
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just remember if it looks....walks.......quacks like a duck its a duck you stated the problem started after the new filters

what did the old filters look like

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Sucks getting old but it beats not getting old.

i got my helmet but it sure makes licking the windows a chore

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post #9 of 17 (permalink) Old 01-07-2014, 09:21 PM Thread Starter
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Quote:
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just remember if it looks....walks.......quacks like a duck its a duck you stated the problem started after the new filters

what did the old filters look like
Pretty dirty and bad...parts of the filter were missing on both sides, foam just hanging around in pieces.
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post #10 of 17 (permalink) Old 01-07-2014, 09:25 PM
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Pretty dirty and bad...parts of the filter were missing on both sides, foam just hanging around in pieces.
take it from me i have delt with this before first hand the carbs have literally ate the old filters and are now clogged with debris

best bet is to remove the carbs and thoroughly clean them out

the filter baskets are only meant to keep the filters from caving in but once they start to dry rot they will get sucked thru the baskets

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Sucks getting old but it beats not getting old.

i got my helmet but it sure makes licking the windows a chore

cell phone number for anyone who needs it 214-516-1738

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Last edited by new rider 9984; 01-07-2014 at 09:28 PM.
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