500 LTD very low mpgs :( - Page 2 - Kawasaki Vulcan Forum : Vulcan Forums
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post #11 of 17 (permalink) Old 09-29-2012, 07:26 PM
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I just had another thought: How is your oil level? Is it rising? Does it smell of fuel? Is there excess fuel inside the airbox? (Use the drain tube behind the exhaust crossover pipe. It's the one that is plugged.)

I ask this because a faulty tank vent could allow the tank to 'overpressure' causing the fuel to disappear somewhere via carb overflow. The airbox is one place. The crankcase is another. Inspect both. Check the tank vent hose on the right side.

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post #12 of 17 (permalink) Old 09-29-2012, 07:32 PM
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Quote:
Originally Posted by crazy88 View Post
you said +1 on the front sprocket? that's a factor in the fuel milage. your crusing rpm is probably alot higher. remember that +1 in the front is close to -3 or -4 in the back.
And it makes the gearing taller and REDUCES the RPM.
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post #13 of 17 (permalink) Old 09-29-2012, 09:46 PM
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i'm pretty familiar with sprocket changes and how that effects things.
lol!

........
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post #14 of 17 (permalink) Old 09-30-2012, 08:34 AM Thread Starter
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I'll be doing all the suggestions you guys have given me, in order from least troublesome to most
I'm a first year law school student. . so time and money are a BIG luxury, and this bike is my main form of transportation. I also own a small 4 banger ford Ranger, but it's 18 mpg make me want to REALLY avoid riding her.

Thank you guys so much for all your help, I WILL look into this and post back as I get through each step.

2003 Kawasaki Vulcan 500
16,484 miles when I bought it September 2011. 29,100 miles January 2014. All these miles have been enjoyable almost entirely thanks to this forum.
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post #15 of 17 (permalink) Old 10-03-2012, 09:16 PM
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Originally Posted by Easy Rider View Post
And it makes the gearing taller and REDUCES the RPM.
uhh... i stand corrected!

95' 88
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post #16 of 17 (permalink) Old 10-03-2012, 09:17 PM
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lol!

........
yeah right? ::: smacks forehead :::

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post #17 of 17 (permalink) Old 11-18-2012, 02:59 PM Thread Starter
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Ok guys. This issue has been finally resolved. I had to buy an OEM air filter, and after installing it, MPG's returned to high 40's ( %100 city driving), which is slightly higher than before, but there's still a lot of room for improvement in the mpg area. Playing with tire psi, shorter warm up times, etc.

The problem was the combination of Dyna Pipes and K&N filter on stock jetting leaned the bike out way past what adjusting the pilot air screws could've helped.

Thanks for all your input guys!

2003 Kawasaki Vulcan 500
16,484 miles when I bought it September 2011. 29,100 miles January 2014. All these miles have been enjoyable almost entirely thanks to this forum.
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