These two previous posts should solve most of your problems. I would do as described, and find any wet spots first, then move on to upstream troubleshooting for the introduction of air into the system.
Quote:
Originally Posted by TMAllison
Find the line in the attached fuel path where bubbles first appear, and work backwards from that point. fuelflow.JPG (image)
Because everything prior to line 4 is under suction, that is where you will usually find air leaks with fuel leaks from line 4 on where everything is pressurized....
....I've had issues getting the prefilter completely sealed. Had to crimp the hold down washer to get more downward force to stop a small air leak. Prefilters can crack and fail also.
I'd waste a can of carb or break cleaner on the fuel filter housing and IP and then move the windsheild washer bottle, fire it up and reach under and feel for wetness. |
Quote:
Originally Posted by KarTek
...Oh, and one last thing: A common mistake is to place the SOV o ring all the way up against the body of the valve rather than against the step in the tube that inserts in the the IP body.
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Once you find the culprit of the air bubbles (just the major source, you might not get rid of all air bubles), then go ahead and invest in a few extra fuel filters and some diesel purge, you will use them sooner or later anyhow. A diesel purge shouldn't hurt things and might give you back a little mileage and performance.