88 ford 7.3 IP troubles
#1
88 ford 7.3 IP troubles
Greetings all. My son has an 88 ford 7.3. It ran poorly with bad compression and knocks, and so was rebuilt. We never got it running and it was parked for two years. We are trying again...
The engine will turn over but will not fire. There is fuel at the filter and clean fuel comes out the Schrader valve when bled. One line cap was removed at the IP rotor to check fuel delivery. Barely a random spit. The shutoff solenoid has power and functions. Very little fuel will weep from the return elbow atop the IP, although the bowl fills. Are there any tests for IP functionality? Priming sequence?
Any wisdom from the masses is appreciated!
The engine will turn over but will not fire. There is fuel at the filter and clean fuel comes out the Schrader valve when bled. One line cap was removed at the IP rotor to check fuel delivery. Barely a random spit. The shutoff solenoid has power and functions. Very little fuel will weep from the return elbow atop the IP, although the bowl fills. Are there any tests for IP functionality? Priming sequence?
Any wisdom from the masses is appreciated!
#4
#5
I do not recommend rebuilding due to the extremely tight tolerances and the possibility of a run-a-way engine, but I believe there are some places you are able to order some parts from, I do not know from the top of my head, could always shop around for a reliable shop to rebuild your IP. If you're truck was to start and then would not restart, I could tell you how to test it, but I do not know how to test one that doesn't already start
#7
#8
As an update, I got a seal and o-ring kit, delivery valve spring and stop, and transfer pump vanes for about $80. We broke it down on a clean sheet on the bench and washed up everything. I had found an informative manual online that shows a step by step removal, teardown, inspection and reassembly of the Stanadyne DB2 pump.
We rebuilt it, installed and bled it. We do have some air infiltration issues at the return line seals, but the 7.3 does run now. First time in two years after the engine rebuild.
The process of the pump build was rather simple and informative. My son and I now have a much better working knowledge of the DB2.
this should be a clickable link to the manual
http://www.google.com/url?sa=t&rct=j...nHLlixPAegLNqA
We rebuilt it, installed and bled it. We do have some air infiltration issues at the return line seals, but the 7.3 does run now. First time in two years after the engine rebuild.
The process of the pump build was rather simple and informative. My son and I now have a much better working knowledge of the DB2.
this should be a clickable link to the manual
http://www.google.com/url?sa=t&rct=j...nHLlixPAegLNqA
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