'99 Suzuki DT200 EFI cuts out intermitantly

Scoutman

Recruit
Joined
Jun 7, 2009
Messages
3
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Past: Prior to my deployment overseas, I mothballed my boat by filling the tanks, adding stabilizer, fogging cylinders, etc. Little did I know @ the time that I would be gone for 3 years. Boat ran flawlessly when I put it away.

Present: Drained tanks, filled with fresh fuel, replaced water/fuel seperator, cleaned fuel filter, new plugs(correctly gapped), replaced fuel line and primer bulb. Checked for loose electrical connections.

Scenario: Motor starts/idles fine. Under acceleration it cuts out @ 3000 rpm, ocassionally 4200 rpm. After I back out of the throttle, it picks up and runs again. Sometimes it runs great and will hold 5500 rpm with no hiccups. All of these symptoms are under load and it revs out fine in nuetral. It acts like a fuel issue, as all of the plugs look good (no fouling) At this point I am thinking fuel pumps, but I don't want to start replacing parts unneccesarily as funds are tight and any extra money is going to get caught up on bills. Thanks in advance for any advice.
 

Scoutman

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Joined
Jun 7, 2009
Messages
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Re: '99 Suzuki DT200 EFI cuts out intermitantly

Bump.

Ordered 2 fuel pump rebuild kits from Brownspoint as that was the next least expensive idea I had. Any suggestions would really be appreciated.
 

cousinabe

Senior Chief Petty Officer
Joined
Nov 13, 2001
Messages
765
Re: '99 Suzuki DT200 EFI cuts out intermitantly

looks like you're on the right track.
rebuild them and post your results.
 

Scoutman

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Joined
Jun 7, 2009
Messages
3
Re: '99 Suzuki DT200 EFI cuts out intermitantly

Replaced the diaphrams, springs and o-rings and reassembled. Dissasembled the vapor seperator and cleaned it up. Blew compressed air through the needle valve(??) and reassembled. Runs out great and pushed us along this morning @ 5600 RPMs and 74 MPH on my GPS, no hiccups.
 
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