Oldyellowtractor
New member
I’ve got a Ford 4000 diesel that’s giving me fits. It’s a 4 cylinder. It sat for a while and the fuel turned to varnish. I tried to crank it and didn’t get any fuel out of the lines.
After much tinkering, I decided to disassemble and clean the Rosa-Master pump. Put a new seal kit in it, all that stuff.
Got the pump back on there and it’s getting fuel to the injectors, looks like a good stream, but won’t fire. It will run on either, but that’s it.
I pulled an injector and no fuel is coming out at all. I took the injector apart (I know that’s not recommended) to see if it also had varnish in it, but it was clear. Carb cleaner sprays right through it.
So, I’m thinking either the pump is not putting out enough pressure to open the injector, or I don’t have enough RPM from the starter to get it to build pressure. Any ideas? How many RPM does it need to start?
Also, it’s a backhoe, so I can’t really pull start it.
After much tinkering, I decided to disassemble and clean the Rosa-Master pump. Put a new seal kit in it, all that stuff.
Got the pump back on there and it’s getting fuel to the injectors, looks like a good stream, but won’t fire. It will run on either, but that’s it.
I pulled an injector and no fuel is coming out at all. I took the injector apart (I know that’s not recommended) to see if it also had varnish in it, but it was clear. Carb cleaner sprays right through it.
So, I’m thinking either the pump is not putting out enough pressure to open the injector, or I don’t have enough RPM from the starter to get it to build pressure. Any ideas? How many RPM does it need to start?
Also, it’s a backhoe, so I can’t really pull start it.