1550, 1650 Diesel supply to injection pump.

T-bird · Mar 24, 2016

Can anyone please explain why the 1650 has a fuel supply pump to the injection pump and the 1550 does not ?? Ive been wondering this a long time and just thought to post the question. Also,,,what is the average supply pressure on the 1650?

Married2Allis · Mar 25, 2016

What I found is that the 1650 will run fine without one until you have to bleed the lines. Seemed impossible but after I put one on, it fired right up. Also seemed to start quicker. Possibly the engineers at the time decided that the 283D pulled more fuel than the 1550 diesel, just enough to require one.

T-bird · Mar 25, 2016

That's interesting. I wonder if my uncle were to install a 7-10 PSI electric fuel pump on his 1550 diesel, Wire it to the ignition key,,,if it would start quicker? It would possibly make sense.

Married2Allis · Mar 25, 2016

Exactly what I did and it works great. Got an electric pump and wired it to the starter switch so it runs only when cranking. Good to have an inline fuel filter in front of electric pumps or they don't last long.

Dieseltech · Mar 25, 2016

Most don't need a supply pump, even though they may have one. The injection pump has it's own vane pump that will pull fuel when needed depending on how the builder designed the fuel supply system. Many AC, IH, Ford, MM, and White tractors never had a supply pump..

1550, 1650 Diesel supply to injection pump.

T-bird

Member

Married2Allis

Well-known Member

T-bird

Member

Married2Allis

Well-known Member

Dieseltech

Well-known Member

Similar threads