IH 806 Fuel issue

My 806 is having a fuel issue. It acts like its starving for fuel. It powers down until it dies. But if I crack open the fuel pump bleeder bolt it will run fine. I have changed the fuel filters and it seems to get fuel to the pump.

Time for injection pump repair, the weight retainer ring is failing, causing the housing pressure to increase and cause shut down. After setting a short time it will start, then act up again. Confirm by taking loose the two screw timing pump side cover to allow fuel to leak out, bet it then runs OK then. I always remove the pump WITH the drive adapter, as the shaft seals are in the adapter on 361-407-429 IH engines. Just repaired a 1256 pump last week for the same issue.

(quoted from post at 09:47:17 08/29/16) Time for injection pump repair, the weight retainer ring is failing, causing the housing pressure to increase and cause shut down. After setting a short time it will start, then act up again. Confirm by taking loose the two screw timing pump side cover to allow fuel to leak out, bet it then runs OK then. I always remove the pump WITH the drive adapter, as the shaft seals are in the adapter on 361-407-429 IH engines. Just repaired a 1256 pump last week for the same issue.

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Yes..what this guy says....about any tractor with the Roosa-master 'DB' type rotary inj. pump can suffer this affliction. The synthetic/plastic 'governor-ring' is likely failing. Can be confirmed by taking the timing window loose and seeing if little 'black crumblies' come out with the diesel(chunks of the ring)...what happens is the rotten chunks of 'rubber' plug the fuel return system and tractor stumbles and will likely die.

Sometimes you might buy some time by blowing out the fuel return system and clearing the return fitting in the top of inj. pump. some tractors have a tiny glass check-ball/spring in this fitting and it can be driven-out with a skinny punch(shatter the tiny glass ball and punch the spring out too!)....this allows the pump to return fuel, however if the 'governor-ring' is cratering it is borrowed time and you risk a run-a-way engine if the metering valve hangs-up or something else dis-combobulates inside the pump..

Not all Roosa-master pumps have a check-ball in the return fitting(I've seen it in Deeres and Farmalls)...and too..I have seen the little fuel return check-valves just stick shut with no chunks of governor-ring or anything else plugging it. Knock the check-ball/spring out and go..

An injection pump shop owner told me the bad governor-ring affliction is often caused by bad fuel/water in fuel. This seems true enough as many of the tractors I've yanked the bad Roosa-Master pump off of to send in for overhaul had watery fuel!

When I was a kid I had the same thing happen to me while running Father's 806D...stumbled and lost power(way out in the bad-lands!....pre-cellphone!!! :shock: )...had to have pump over-hauled and cleaned some water from the fuel..changed filters...all good after that. Unless it's completely junk doesn't cost all that much to rebuild a Roosa-master usually.

Thank you for the info... sounds like a pump rebuild is in order. Thanks again!