2006 6.0 air leak at injector - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 08-16-2019, 12:28 PM Thread Starter
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2006 6.0 air leak at injector

I’ve been trying to track down HPO leaks in this truck for a few weeks. I found that the updated standpipe had one of the orings blown out, it was a dorman standpipe so go figure. After changing them out I put it back together and pressure tested and now I’m getting leaks at the injectors. Now I haven’t tried starting the truck or seeing if the standpipe has solved the problem but it seems to be leaking a lot of air. I pulled the rail off the passenger side and used a rubber tip to test each injector. When testing I am getting air leak out the oil exhaust port on all 4 injectors. One is worse than the rest. Is this normal? Is there something I have to do before testing the injectors to get the exhaust port to close? I have read that this can be related to spool valves. The injectors only have about 30k miles on them but after finding dorman standpipes I have doubts that the PO bought good replacement injectors.
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post #2 of 3 Old 09-06-2019, 02:53 PM
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I have a 2004 with the same issue... seems no one answers here any more.
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post #3 of 3 Old 09-06-2019, 02:58 PM Thread Starter
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From what I’ve found it’s fairly normal. I will say after putting mine back together and changing the oil I found the real culprit of my problems, 19 quarts drained from the oil pan. One of the injectors is leaking fuel into the crank case.
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