4BD1 Priming pump

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Originally Posted by solidrock

Did you get the bosch part no 2 447 222 126? I got that one today, but it looks to be a smaller diameter than the original push/screw primer pump.

Edit: I found a reference to this part number in the Isuzu forum, so I'm hoping that it's just my eyes deceiving me.

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There are many part numbers and the pumps all appear identical regardless. Yes they are smaller than the original. But they work far better.

Quote:

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Originally Posted by solidrock

Did you get the bosch part no 2 447 222 126? I got that one today, but it looks to be a smaller diameter than the original push/screw primer pump.

Edit: I found a reference to this part number in the Isuzu forum, so I'm hoping that it's just my eyes deceiving me.

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:) I have a Perentie too. Got a photo of it fitted up? Working ok?

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Originally Posted by Carzee

:) I have a Perentie too. Got a photo of it fitted up? Working ok?

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I Installed it today and was able to prime the system from the hand pump up to the fuel filter and on through to the injectors - I originally cracked the fuel filter bleed screw and primed, but it wouldn't start and run until i cracked the injector(s).

When being used for priming the pump tends to leak a bit from between the pump and the base above where it screws in, i'm not sure if this is by design, but it does the job and feels sturdier than the old one. Id be interested to know if anyone else's bosch primer pump leaks a little during use?

I have attached a pic of the old style pump (unscrewed and uninstalled) and a pic of the new bosch pump in place.

It should not leak. If it can leak diesel it could also suck in air.
Try a new copper washer and tighten it up.
Phil.