KQ 300 - weak fuel pump?

This is a discussion on KQ 300 - weak fuel pump? within the Repair and Maintenance forums, part of the Suzuki ATV Technical Discussions category; When I'm crusing at trail speeds and the tank goes below half it'll loose it's gas sometimes, seems to happen more when I hit a ...

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Old 08-20-2011, 04:28 PM   #1
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KQ 300 - weak fuel pump?

When I'm crusing at trail speeds and the tank goes below half it'll loose it's gas sometimes, seems to happen more when I hit a rough patch of trail. The lower the gas gets in the tank, the more often it seems to happen. I was on my way home today (put on 174 km) and had an idea, I put the fuel valve into the reserve postion and it never missed a beat the rest of the way home. Is this normal or is my pump going or something?
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Old 08-20-2011, 06:13 PM   #2
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If its running good on reserve the fuel pump is fine.I would drain the tank,pull the petcock to check the screens on the pickup tubes,it may also be a bad petcock most are vaccum operated and are known to fail.
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Old 08-22-2011, 07:35 AM   #3
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Mine is the vaccum operated version (two hoses going to it), I checked the online microfiche and there are two parts listed (44300-19B22 & 44300-19B30) with no way to tell which is which. I've encountered this situation with Suzuki fiche before, kind of confusing. We get hosed pretty good on parts up here so I usually order smaller stuff like that from the US but it doesn't help when I have no way to tell which is the correct part number.... /rant.

Two more questions:
What seals the petcock to the tank?
Do you think this problem wil get progressively worse or can I get away with running it on reserve for a while?

I just spent $150 to make and install a full length 3/8" teflon skid plate because the steel ones were trashed.
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Old 08-22-2011, 10:14 AM   #4
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You can continue to run on reserve.
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Old 08-23-2011, 07:18 AM   #5
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Thanks.
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