Racor Fuel Filter/Water Separator Installed
I just finished installing the Racor 120A fuel filter/water separator with a 10 micron filter on my 2010 RTV 900, details of that product was presented in a post last week in this thread.
I clamped the fuel line before the in-line filter and removed old filter. I installed a "T" where the factory fuel line from the tank attached to the old filter, installed a fuel shut off valve pointing down with short hose attached. My idea here was to have a way to drain the fuel tank if necessary.
The filter's mounting holes didn't match the existing holes in the frame behind the air filter, but decided one 8mm X 1.25 about 1 1/4" long with lock washer would be adequate to hold the filter. I installed the two provided plugs with pipe thread sealant in the left side ports. Installed two 1/4" NPTF threaded barbs fittings with sealant on the right side inlet/outlet ports.
I used 5/16 fuel injection hose (purchased 3 feet, fuel injection hose is stronger than standard fuel hose) and ran a section from the filter's outlet port directly to the engine fuel pump. I ran another section of hose from the "T" mentioned earlier up to another fuel shut off valve and then a another short section of hose to the inlet on the fuel filter. The fuel shut off here will help when changing the filter in the future.
I removed the fuel filter with the plaster bowl attached, filled it to the top with diesel fuel, and then re-installed the filter to the head assembly. The pictures may not clearly show that I ran the fuel line hoses between the vertical frame member and the fuel tank and used some cable ties to secure them. If water appears in the plastic bowl, there is a valve in the bottom to drain it off.
Then I started the engine, about 8-10 times. Each time the engine spit and sputtered, then stalled. (Note: I only had a 1/2 tank of fuel, a full tank may have worked better) I would increase the throttle and it would run OK, then went back to idle, it would spit and sputter, then stall. Finally it would idle, try to stall, but continued to run poorly. I got worried the 10 micron filter may be to fine or the extra length of fuel line was creating to much resistance. After about 15 minutes of rough idling it began to idle smoothly. Tomorrow I will take it on a test drive just to make sure everything is OK.
By the way, in addition to paying about $55 for the filter assembly, I spent another $35-40 for fittings, hose, shut offs, etc.