300D Fuel Primer

I changed fuel filters today and realized for the first time that my
injector pump has a Bosch plunger-type primer pump that does not
unscrew. Has anyone else had experience with these type hand pumps? It
seemed like it took forever to purge the system of air, but I was
finally able to get the air out. I doubt that this pump had anything
to do with it, but was curious because I have never seen one of these
before.

On Feb 23, 5:10 pm, "randallbr...@mac.com" <randallbr....TakeThisOut@gmail.com>
wrote:
> I changed fuel filters today and realized for the first time that my
> injector pump has a Bosch plunger-type primer pump that does not
> unscrew. Has anyone else had experience with these type hand pumps? It
> seemed like it took forever to purge the system of air, but I was
> finally able to get the air out. I doubt that this pump had anything
> to do with it, but was curious because I have never seen one of these
> before.


I recently replaced mine original one which was leaking with one of
these. It's smaller and unlike the original, you don't unscrew it,
you just push it. As far as functionality, not sure I could make a
fair comparison, as I did not change the filters at the time. I did
bleed it though and the pump seemed to work OK, but there wasn't as
much air in my case either.

Since then I've seen the old style apparently still available.