The "mouse turds" (pellethane ring disintegration) if present, can be found by opening the timing window on the side of the pump body and observing whether small bits of black plastic are inside.īesides the one above, there are many more threads about injection pumps by Jdemaris. Read Jdemaris's discussion about halfway down the first page of this link: Other causes could be a stuck metering valve in the pump. There is a mechanical fuel shutoff on this pump, but should be open if the throttle lever is raised. Is that the case? If not you need to determine if that is a blockage in the return line or tank, or it is happening in the pump? I couldn't tell from your discussion if you are actually getting fuel back through the return line to the fuel tank. You need to do a little more troubleshooting before I would pull the IP. I don't see anything with this name in the parts list.ĭo I need to continue homage to the purge gods, or is it time to pull and disassemble it? I've heard of a "pellathane-plastic dampener retainer ring" disintegrating over time, but don't have a clue how to check. With the actual fuel line open, I also get dribbles out the "outlet" (top of pump) by gravity and splashes fuel when I crank it. I cranked until the tiny bubbles mostly quit. While cranking, I get fuel dribbles out another apparent bleed screw, also near the throttle lever but to the pump body. ![]() (I've heard of J-wire issue - maybe something's partially plugged here?) The fuel tank is pretty full, so fuel runs out the return line to the governor when I open the valve and a bleed screw near the throttle lever. The governor gets fuel, but not much with cranking. I have good air-free flow to the inlet but don't get anything out the banjo bolts. ![]() My tractor doesn't have any other fuel pump, just gravity feed to the IP.Īccording to the parts manual, this isn't the stock IP. I have a Roosa-Master DBG VC429-3AJ fuel injection pump that isn't working after sitting for a few years.
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