Injection pump leak at the clear line, please help

[otto huber]

I have a leak where the 17mm banjo bolt attaches the clear line to the side of the IP just above the lift pump. It all started 6 months ago when I started using HPR diesel. I replaced the two crush washers at the bolt with aluminum washers, and it helped but the leaking would only stop if I had around 30% or less of HPR in the tank. I've been leak free for the past 5 months, then all of a sudden that bolt started leaking again last week and there was no HPR in the tank. I've tried replacing the crush washers with both aluminum and copper with no luck. I've also replaced the plastic line and bolt with good ones I pulled from a yard.

I don't want to torque it down too hard and risk stripping or cracking the pump. The only thing left that I can think of is going to the dealer and getting a new clear line and washers.