Join Date: Aug 2013
Location: litchfield, maine
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If you have a scan tool that will do cylinder contrubution tests then you could try that, also an injector buzz test when engine cold. Also, check the oil spouts on the sides of the injectors near the coils, it will be spitting oil out of them while running. As strokin-7.3 said, and you do that test running with the valve covers off. Check your fuel filter to see if there is oil in there, black in color. This would indicate bad injector o rings. How does the truck run at idle? Pretty smooth? Any visible smoke out the tailpipe? If it runs smooth and no smoke, then injectors probably ok, for 300k anyways. Injectors last around 200k+ miles, and if the hpop is that old, its probably due. It stinks its a van, but it could be worse, you could have a 6.0 that needs injectors every 100k. Not bashing 6.0's, ive got one, and love it, but more maintenance required. Do you run a programmer or chip at all? If you do, this could be taxing the hpop as well. The hpop on these barely keep up stock wise let alone with a chip. I just bought the srp1.1 pump for my 7.3, haven't got around to putting it in yet though. good luck to you.
2002 f250 ccsb 4x4, 250/200's,5 inch mbrp,itp boost fooler,regulated return/race fuel system, s&b intake, billet 4r100, swamps idm, lifted 2 inches, leveled, 35inch nittos on 18" s468, mishimoto intercooler, hydra tuning, detroit locker rear, dynomat, not done.........
2006 f350 ccsb 6.0, sct tuner 3015 custom tunes, studded, deleted, exhaust