245 Perkins Injector Bleed

[Tyler Sperry]

Good afternoon everyone. I for the life of me cannot get the injectors bleed on my 245. I've got fuel all the way through the injection pump no problem. But the injectors, just won't. I'm also having a heck of a time getting a wrench on the rear Injector, the one closest to the operator. Any suggestions on what tool to use there? I've got the lines cracked on the front two injectors and there seems to be fuel coming out of them.

 

[MF#1]

We've had a 255 since '76, a 245 since '78, and another 245 since '79, all diesels, and I have never cracked an injector to get one running. Was the tractor running okay before you needed to bleed it? Fuel tank shutoff OPEN, engine cutoff pushed IN, throttle over half open, good battery? No air at all from the bleed screw? Rarely the engine cutoff cable will slip at the lever on the pump, might check it out, should move the lever forward on the pump. Otherwise something else could be causing your problem.

 

[Tyler Sperry]

It was running great before I had to do all this. Unfortunately though my Injection pump was severely leaking fuel. So I had the pump rebuild and it's no longer leaking. However after I reinstalled it, and attempted to bleed the lines I got it all blead through the pump, which usually works. And then crack the lines at the pump rather than the injectors. As that always worked in the past. Particularly after a fuel filter change. But it just wouldn't start. I've attempted everything I know of and cracked the lines at the injectors as a last ditch effort. I got a little fuel through my first two injectors, but the 3rd one has proven to be an issue. It won't even attempt to light off even on the two cylinders. So I'm at a loss as it just seems like it's not getting any fuel to the cylinders at all. I tried a little starting fluid and all it did was cough. That was the closest I've had it to running so far.

 

[MF#1]

Ouch! Something makes me wonder if the rebuild is now "questionable". With 2 lines cracked it 'should' at least pop off or even start. Might want to give the rebuilder a call. A couple of times I've had to go full throttle while cranking to get one to start but my hand never left the throttle, as soon as it hit I pulled it back. "Little fuel" at the injectors doesn't seem normal, should be a good spray, or so I've been told as I've never had to crack one to start it.

 

[Tyler Sperry]

Yep. Im wondering that myself. I'll have to keep digging. Hopefully there is just something small I'm overlooking.

 

[Dieseltech]

Was the pump calibrated on a test bench? I run all pumps I repair on it to make sure the pump is working right.

 

[Tyler Sperry]

Was the pump calibrated on a test bench? I run all pumps I repair on it to make sure the pump is working right.

To my knowledge it was. I actually went through the process of just trying to bleed it again emptied the pump, double checked timing, refilled it, bled it again and after a lot of cranking it started and ran. There must have been some air trapped somewhere and I didn't realize it. So fortunately it looks like the pump is all good, sealed up, and the tractor runs good. I do appreciate the help from everyone, thank you!

 

[miangus]

The procedure that works for me is make sure the fuel is turned on, bleed the filter system, open bleeder one at the pump and crank engine util you get a solid stream, shut bleeder one and open bleeder two and crank engine until you get a solid stream. Crack one injector line. While cranking engine to start give just a light spray of starting fluid. I have never had to crack more than one injector. A cracked injector will spray a lot of fuel when cranking. Remember a Perkins will not start until you get diesel on your pants.