Re: Roosemaster Diesel Injection
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Posted by Milan H. Dilworth on July 13, 1998 at 20:54:44:
In Reply to: Roosemaster Diesel Injection posted by Dave on July 13, 1998 at 14:49:24:
: I recently purchased a MM tractor with a Roosemaster injection pump, The trouble I am having is that I get fuel gravity fed throught the filter to the pump, but no fuel at all comes through the pump when cranking. I loosen the injector lines at the pump and injectors and there is no fuel there. Yes, the pump is turning, and has fuel in it, but does not even spit any out. This tractor sat for approximately 3 years and ran fine when it was parked. I am afraid I am going to have to pull the pump and send it in. Any advice would be appreciated. The first thing you should check is the fuel return line, from the top of the pump which returns fuel to the fuel tank. Remove the line from the fitting on the top cover of the inj. pump and blow air through it. You may need to remove the fuel cap beforehand. If this line is plugged it will not allow the inj. pump to feed fuel to the injectors. This is often engaged in an engine that is regularly used, but then it will barely start and quit or not start. The return line has a check valve in it in most systems and it can get stuck after being dormant, and contaminants in the fuel may help. Also a piece of disintegrating fuel hose etc. can get jammed in. My brother had a MM some years ago wherein I had the problem found quickly. It started easy after removing the return tank fitting and cleaning it. You may need to do this also if the air will not blow through. Hope this is your problem. It's a cheap repair.
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