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DF 140A fuel issue - hard to start. Hi Pressure filter

deeson

New member
I've had a problem with restarting my 2017 Suzuki DF140A after it ran great for several minutes. I replaced fuel/water seperator filter, external fuel filter, both low and high pressure fuel pumps, fuel lines, primer bulb, and fuel tank check valve. But today I finally found the problem and wanted to share it. Inside the VST on the output side, there is a hidden hi-pressure filter/screen. Here are the pics to help you out.

Never would have guessed my problem was a due to fuel flow since once it finally started, it ran great.
 

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My DF115 is in the shop. I'm getting the high pressure pump and regulator replaced. Suzuki declined the warranty following a hydrometer fuel weight reading of 660.
The allowable fuel readings Suzuki will allow warranty coverage are 620 - 640.
Other fuel sources around all checked out with the weight that my fuel was. So you cannot find fuel to meet their parameters.
Be careful because suzuki will go out of their way to avoid paying a claim.
 
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