Re-lubricating “Washed Down” Engine Top End, 1983 6.9 Diesel.

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#16

12-15-2014, 08:43 PM

Macrobb

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Quote:

Originally Posted by Dal3

I don't have pictures, sorry.
I'm stuck at getting fuel at the injector in the 8 step procedure.
The manufacturer's troubleshooting link was informative.

I'm not sure I understand all the priming procedure and haven't tested power to the fuel shutoff valve yet (I don't have an internet connection at the repair site.)
But I have cranked the engine quite a bit and am beginning to wonder if there could be a malfunction in the high pressure side of the injector pump.

Since I last wrote, I reconnected the, apparently working, mechanical fuel pump supply line to the filter.
Then I disconnected the return line at the top front of the IP.

After some cranking, I did get what looks like a continuous stream of fuel from the injector return.
I reconnected the lines and cranked extensively, 2-3 minutes, now with the throttle full open.
I still haven't seen a trace of fuel at the injector connector.

Make sure you've got power to each of the two solenoids. If you have the key on and remove the wire and plug it back on, you should hear a click.
Both solenoids need 12V power to bleed the system correctly.

Then, make sure you have the accelerator/lever floored. Same deal for bleeding the system.
You can also check that fuel is coming out of the return port on the top of the IP. If it's not, you may have a clog between the separator and IP.
(Mind you, this requires the cold idle solenoid to be active for almost anything to come out of here)

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