That brown line that goes over the red dipstick handle is the clear hard nylon line that turned brown over the years. Isn't that aka the IP return which meet up with the injector return line and the cigar hose at the 3 way banjo? The nylon line cannot be crimped without damaging it. What if I take the config of photo in post #16 and add a bolt and washer to the hanging open banjo to close it off? Would that work to test the IP bypass valve?
Quote:
Originally Posted by Brian Carlton
See........now you made me go and check the FSM.
Yes, the "union screw" at the fuel fliter, which is the horizontal outlet line seen in the photo in post #16, should be cracked and the primer should be operated untl clear fuel emerges from the union screw.
Then, the screw is tightened and the primer pump is then operated until an audible rattling sound is heard at the IP bypass valve.
Additionally, the IP bypass valve can be the culprit here if it's allowing fuel to pass at lower than the specified pressure. In this situation, the fuel pump cannot build pressure to the IP. A quick test for this would be to clamp the return line from the bypass valve. If the engine starts immediately, the valve is the culprit.
Look at the photo in post #16. There is a brown fuel line that goes right over the top of the red dipstick. That line leads to the IP and the bypass valve. The bypass valve is the bolt that secures the banjo at the end of this line. If you can plug this line to see if the engine will start.........you can confirm if the bypass valve is NG.
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