Hi -
Thanks for answering. Sorry about the lack of info. The new Monark injector nozzles are fit into my existing Bosch injector housings. My engine is about a 1958 model with the brass "banjo" fittings for the return lines. (Not the newer method of return lines through rubber hoses). I don't see any leakage from the body of my housings. When I fit the new nozzles into the injector housings, I was pretty careful about cleaning everything.
I suspect that the steel heat shields or (some call them seal rings) did not compress when installed causing leaking. What do you think? Thanks Angus

60 pound per sq. inch is very untight! (it is approx. 7 Nm).
You should torqed injectors tighter with 70-80 Nm.

Just swapping the new Nozzles into used Injectors without lapping the Parts can result in the Injectors leaking about the Nut that holds the new Nozzles on.

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84 300D, 82 Volvo 244Gl Diesel

thanks for the reply- I'll lap the injector housings and let you know how things go. thanks again Angus

Diesel Injectors


There is a part inside that if you do not put it back where it came from correctly when you torque the Injector Nut you break off part of the Nozzle Pintel.
The part listed in the pic as the spring seat is the part and I circled it in red. You should see the wear mark where the spring rubbed on it so you no which way it goes.


The plate with the arrow also has to go a specific direction. The smaller end goes against the Injector Nozzle.


The 2 parts that make up one Injector Nozzle are mated together and should not intermixed with parts from other Nozzlles.

Attached Thumbnails

 

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84 300D, 82 Volvo 244Gl Diesel