What a clot I am. having been working with a mate to rebuild a 19 j engine to put in my series III. Putting the finishing touches to the engine today after the install when I overtightened the pipe on the back of the fuel pump to the turbo ( waste gate I think) ,and cracked a small lump off the back of the fuel pump so the pipe cannot now be fitted.

Engine still runs albeit ti weeps a bit of diesel out of the now empty hole. I could blank it off but what risk am I running in doing that?

Is this fatal? any help would be very gratefully received.

Im not familiar with the 19j pump, but if the small plastic pipe is from the turbo it tells the inj pump that the engine is making boost and the extra pressure adjusts the fuelling, so if its leaking diesel something isnt right as it should only handle air.
A pic might tell us more

moorlander said:

What a clot I am. having been working with a mate to rebuild a 19 j engine to put in my series III. Putting the finishing touches to the engine today after the install when I overtightened the pipe on the back of the fuel pump to the turbo ( waste gate I think) ,and cracked a small lump off the back of the fuel pump so the pipe cannot now be fitted.

Engine still runs albeit ti weeps a bit of diesel out of the now empty hole. I could blank it off but what risk am I running in doing that?

Is this fatal? any help would be very gratefully received.

Click to expand...

Pipe from the turbo to the pump?

Not the waste gate, boost compensator, that pipe is a boost pressure pipe, when the turbo blows, via this pipe, it acts on a diaphragm in the compensator and moves the fueling pin to increases the fueling.

If there is diesel weeping from this you have a problem - like the diaphragm is split.

Unless did you get them the wrong way round and connect it to the spill return?

Or maybe you just horsed it up so tight you damaged the housing so badly it's cracked though to the extent the diaphragm isn't held in place and diesel is weeping around the back?

Just how tight do you think a 5/8" pipe like that needs to be? Nip them up then a 1/4 turn IF that. It's not holding the rotors onto a helicopter!

Harsh, but funny. I guess we have all "over torqued" something at some point.