Running on three cylinders

One by one disconnect the feed line to the injector and with the engine running check to see if you have air/bubbles at the injector connection. Seems you may have compression leaking back into the injection pump/s.

Well Gee that sounds like it could be expensive I wonder what would cause that don’t tell me my pump went bad..
well I will try that out and see what I find. Thank you for the help and the reply hopefully we can figure this out strange that all three cylinders would just be gone together

[quote="Tiahoa post=261983 userid=17933"]Well Gee that sounds like it could be expensive I wonder what would cause that don’t tell me my pump went bad..
well I will try that out and see what I find. Thank you for the help and the reply hopefully we can figure this out strange that all three cylinders would just be gone together

OK I tried that didn’t really see any air bubbles but it may be that there is when I cracked number five it seemed like there was a shot of air and then it was just fuel,, I am getting an oily residue out my exhaust it is Diesel he just leaving a sheen on the water and it’s never done that. Also at a dead idle, it seems like it’s running on four cylinders the first four I swap nozzles, 12 and three with 45 and six, and no change beginning to think my pumps shot somehow. 
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All it takes is for one bad injector or its seating to allow compression to back feed into the injection pump common feed passage. The #5 you mentioned, was the air coming from that injector? not the feed line? Not having three cylinders firing causes the remaining good cylinders to load up and be over fueled. If you are getting fuel from the injection pumps when checking flow there is nothing wrong with the pump/s. Problem is as soon as you reconnect the feed lines to the injector you start the compression leak displacement of fuel all over again.
If you have trouble detecting back flow at the injector connection, squirt a little lube oil in the opening and see if it gets bubbles or blows out.

so to clarify OM you recommend, remove the injector line and crank the engine if bubble form on the injector fitting it's not seating properly and allowing compression pressure back into the injection pump stopping it from working correctly.

All it takes is for one bad injector or its seating to allow compression to back feed into the injection pump common feed passage. The #5 you mentioned, was the air coming from that injector? not the feed line? Not having three cylinders firing causes the remaining good cylinders to load up and be over fueled. If you are getting fuel from the injection pumps when checking flow there is nothing wrong with the pump/s. Problem is as soon as you reconnect the feed lines to the injector you start the compression leak displacement of fuel all over again.
If you have trouble detecting back flow at the injector connection, squirt a little lube oil in the opening and see if it gets bubbles or blows out.

So I found that number six after pulling them out and checking them and looking them over and for whatever stupid reason I decided to blow through one and I could blow through number six not the others but I thought well shoot there’s a problem just like you said, so I ordered six new ones anyway and will report back once I get them put back in and all that business. Thank you old magnet, for your help and direction of where to look. I hope that doesn’t affect the seals in the injector pump for pushing fuel into the oil or anything..  I sure do love the way these girls run good on fuel good power just a sweet old engine.