'08 DF150 VST Filter Help

[Tango2Echo]

My Suzuki DF150 is running alittle rough on top end and is about 100-150rpm off normal WOT. It did this once before and the VST filter was partially clogged with sodium sulfide residue from ethanol gas. I took to to the shop and had the VST tank cleaned, but would like to do it myself this time.

I would like to change the filter screen in the VST tank. Does anyone have a breakdown and parts list for this?

I am pretty handy with a wrench and do almost all my own work (zincs, plugs, water pump, compression test, ect.).

Thanks,

Tango

[boats.net]

The following link is for all the diagrams on your motor.

2008 DF150 Suzuki Outboard Parts

[Greyduk]

I had a similar problem with a 2006 DF140 that I bought in July. The boat is a 2005 with 15 hours total. It sat for long periods of time. It would idle fine but as it reached 2400RPM it would miss and sputter like it was starving for fuel. I had the injectors removed and cleaned. There was some obstruction, but it did not solve the problem. My problem ended up being contaminated fuel being in the VST tank. Rather than have it removed,I flushed it with carb cleaner in an involved process, and that ultimately solved the problem. I had to do it twice, but it finally cured it. When I flushed it out , you can't imagine what sort of trash came out. That debris was gathering on the inlet screen on the intake side of the high pressure fuel pump and restricting the fuel flow.

To be able to flow fuel through the VST to flush it, this is what I did. I disconnected the the return fuel line from the bottom of the fuel rail. This hose flows unused fuel back into the VST tank. I plugged the fitting where it attaches to the bottom of the fuel rail using a piece of 3/8 fuel hose with a 3/8 bolt inserted in to it to plug it up. I then used a can of carb cleaner with the small "straw" tube (like on WD40) to spray the carb cleaner up through the open drain line into the VST tank. When I had sprayed as much as I could, I then blew air through the return fuel line to flush the carb cleaner back out of the open drain line. When I did out came a lot of sediment which looked like rust. But I was told by a Suzuki guru, that it was oxidized fuel. At any rate, I did this process several times and now the engine runs like new. I hope I have made the process clear. If not, let me know if you have any questions. If you try this let me know how it turns out.

[mitch]

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