- 16,671
- 23,842
- 113
- Location
- Burgkunstadt, Germany
Here are my thoughts:
In the past we had determined there is a mistake in the TM where is calls the "X" dimension 2.02", that is an error. X should be 2.20", however, experience has shown me that when working on a motor with unknown pump shim requirements, putting 2 black shims under the pump and pushing the fuel inlet all the way against the push rod tube seems to work every time.
In your case when replacing an existing pump I would use the same shims as you have now , push the inlet against the push rod tube and call it a day!
You are correct in that a new pump = new clearances but I've found that the shim thickness really is not that critical to engine performance.
This is why you lost me. This is a very forgiving engine.
In the past we had determined there is a mistake in the TM where is calls the "X" dimension 2.02", that is an error. X should be 2.20", however, experience has shown me that when working on a motor with unknown pump shim requirements, putting 2 black shims under the pump and pushing the fuel inlet all the way against the push rod tube seems to work every time.
In your case when replacing an existing pump I would use the same shims as you have now , push the inlet against the push rod tube and call it a day!
You are correct in that a new pump = new clearances but I've found that the shim thickness really is not that critical to engine performance.
This is why you lost me. This is a very forgiving engine.