Fuel leak/ 2GM20F

[Frank Pratt]

I have a slow fuel leak coming out from the threads athe base of the reducer that exits the fuel pump. I get about a half teaspoon of fuel an hour I put a wrench on them and they are snug I do not want to over tighten them, Is there a recommended torque for these fittings or is there a seal that neeeds to be replace. Thanks for all of the great information, this forum,you provide a wealth of information

 

[Gordon Torresen]

2GM20F fuel leak

The fuel should be exiting your fuel lift pump through a banjo fitting. I know of no reducer that is supposed to be there. If we are talking about the same pump, a modification has been made somewhere along the way. If the leak is at the banjo fitting, new copper sealing washers will be required and a look at previous discussions of the problem.

 

[Frank Pratt]

Banjo fitting?

The banjo fitting on the input side of the pump is not leaking. The leak is on the output side where the pump pushes the fuel up to the injectors, the fittings have springs inside them and an seal in a groove just above the threads that fit into the pump

 

[Tom Feigum]

Banjo and washer

WE found that all Banjo and washer connections had to be replaced on our new engine. Tightening was of no value.Our desiel mechanic acquired the parts under warranty adn the problem was solved, two eyars ago. Since then we have also lost the banjo on the line from the tank to the fuel pump, it just was not tightened at assembly. WE retightened and have not had a problem since. The other to watch for is the coolant tank mounted on the engine. Engine vibration, especially when cold, will splash coolant out of the tank and into the bilge. ther is no way to remount the tank as the engine is covered top and sides by the engine cowling. WE just check coolant and oil everytime, before, we start, which should be done anyway.