Originally Posted by Hoohaa
Great. It sounds like we are on to something.
Regarding the self priming. Are you saying that once the IP is properly bled then I do not have to bleed her at each of the injectors? She should just bleed herself and start?
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Yes, the injectors are self bleeding, by way of the return line, you will see that each injector has a small tube that starts at #1, and then goes to 2, then 3, then 4, then a rubber line that returns to the tank.
When you were bleeding at the injection pump inlet you were only bleeding the filters, not the pump.
The bleed screw as marked in the pictures is the only way to bleed the pump. Under each of those HP line coming from the pump, is a plunger, which is the acting force for HP to each injector.
Also you should replace each of the sealing washers under/over each of the banjos. I believe these are alumunum, and can be a source of air in the system, once they have been undone a couple of time, plus a work harden with age.
Again, I advise not to tick/crank the engine over for any amount of time with out purging/bleeding the IP. This will damage the plungers, and quite likely the casset. Also running the engine out of fuel can damage both as well.
Once the IP is properly purged, disconnect the rubber return line on the number 4 injector get a quart mason jar, and a section of rubber hose , run it from the the #4 injector, into the mason jar, then tick over the engine, she will either start, or tick over on the starter. Watch for air bubbles in the mason jar. If she doesn't start, quit cranking after 20 seconds, wait 5 minutes, and doe it again. by the 3rd or 4th time. she should be running, and you will have enough fuel in the jar to make sure all air is purged from the system.
If you are getting bubble by this time you still have an air leak.
Now once shes running, after shes warmed up. run her at a fast idle 1100 rpm
, now undue the HP at injector #1, if that doesn't change the speed, and cause rough running that cylinder is firing proper. Now go through each cylinder one at a time. If any cause the engine to drop speed and run rough then, that is a problem cylinder, start by removing that injector for inspection
Also because the HP line at the injector, is at such high pressure, make sure to use a rag draped to cover the injector, so as not to injure yourself.