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jayw
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Pump setting and-a-knocking...

Post by jayw » 08 Mar 2012

Does aanyone have a guide for setting up the Bosch pump? Mine smokes quite badly (bad enough for MOT failure) when pushed and is also not quite returning the MPG i'd expect. It starts and run's perfectly and doesn't use oil so i think it's just a bit on the rich side.

Secondly, i've traced the spurious rear-end knocking:

Those who are aware, the rear suspension cylinder (ram) is mounted into a circular plate in the subrame (with the metal pipe in the side and the sphere on the end). Now, when going over bumps my cylinder is knoking up and down in that plate (it's only about 2mm movement) which is causing the knocking.

So, there's nothing technically wrong with it and normally when under pressure the cylinder would be so rammed up against the plate it wouldn't move but this one's just being an arse.

I've tried wedging things in between the sphere and the subframe lip below it but nothing's working. Are bright ideas?

Cheers.
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Re: Pump setting and-a-knocking...

Post by Vanny » 08 Mar 2012

Not quite what you want, but hows this for rather interesting?

http://gnarlodious.com/vanagon/bosch_pump/-Rebuild" onclick="window.open(this.href);return false;


EDIT

Actually this might have what you want?

http://gnarlodious.com/vanagon/bosch_pu ... _Pumps.pdf" onclick="window.open(this.href);return false;

I know for fact that to do it perfectly you need a DTI and probably an adjustable/magnetic base of some sort.
Last edited by Vanny on 08 Mar 2012, edited 1 time in total.
Reason: more interesting stuffs
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Re: Pump setting and-a-knocking...

Post by Vanny » 08 Mar 2012

Found the chapter out of the haynes


http://bxproject.co.uk/e_files/downloads/4-1.pdf" onclick="window.open(this.href);return false;
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mat_the_cat
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Re: Pump setting and-a-knocking...

Post by mat_the_cat » 08 Mar 2012

I've got a manual for the Bosch VE pump, I'll email it to you if I can find your address.
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Re: Pump setting and-a-knocking...

Post by Vanny » 09 Mar 2012

thats what the second link is for Mat.
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jayw
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Re: Pump setting and-a-knocking...

Post by jayw » 09 Mar 2012

Will have a fiddly diddly once i've sorted the damage Bambi did :roll:
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mat_the_cat
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Re: Pump setting and-a-knocking...

Post by mat_the_cat » 09 Mar 2012

Vanny wrote:thats what the second link is for Mat.
Oops, missed that! :oops:
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Re: Pump setting and-a-knocking...

Post by Vanny » 09 Mar 2012

What i meant was 'IS' that what the second link is to, ie are they the same?
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mat_the_cat
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Re: Pump setting and-a-knocking...

Post by mat_the_cat » 09 Mar 2012

Yep, should have said - they are one and the same!
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Re: Pump setting and-a-knocking...

Post by Philhod » 10 Mar 2012

On the bOSCH there is a lead covered metering screw that you can't touch... well you can and it does reduce smoke.

I had a rattly sphere on the old RD , I cleaned round it then squirted silicon round it protects the inlet pipe from chafing too as there is little clearance round there.

If I remember rightly, the cylinder wasn't seated correctly. I only found out when I fitted a new bellows at the pushrod end.
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Re: Pump setting and-a-knocking...

Post by docchevron132 » 11 Mar 2012

is the spring clip missing from the cylinder?
you can turn the fuelling down piss easy on a Bosch pump if it's just a fuelling issue, but if it's knocking then I'd retard the pump a tad, you *could* use a DTI, but I never bother anymore, just back the pump off till it sounds right!
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Re: Pump setting and-a-knocking...

Post by Philhod » 11 Mar 2012

Welcome back stranger :wink:
Yes the spring had come adrift on mine now you mention it

It was a bosch usit on mine and the fuel adjuster had a blob of lead I had to lose.


Whats the hybrid then??
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jayw
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Re: Pump setting and-a-knocking...

Post by jayw » 11 Mar 2012

docchevron132 wrote:is the spring clip missing from the cylinder?
you can turn the fuelling down piss easy on a Bosch pump if it's just a fuelling issue, but if it's knocking then I'd retard the pump a tad, you *could* use a DTI, but I never bother anymore, just back the pump off till it sounds right!
It's not the engine that's knocking, that's the suspension.

Been through the Bosch manual and despite the fact that i know which screw i'm looking at it doesn't say whether to wind it in or out to reduce fuelling?
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Re: Pump setting and-a-knocking...

Post by Vanny » 11 Mar 2012

docchevron132 wrote:is the spring clip missing from the cylinder?

He's on about the suspension, its is retained by a spring that looks awfully like a cock and balls.
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Re: Pump setting and-a-knocking...

Post by jayw » 11 Mar 2012

That's what i was saying in an arse about face way to correct this confusion:
docchevron132 wrote:but if it's knocking then I'd retard the pump a tad
Anyway, yes my cock and balls are correctly seated. :wink:
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Re: Pump setting and-a-knocking...

Post by Philhod » 11 Mar 2012

:lol: As far as I can remember it's out to add fuel and in to reduce fuel same as on the petrol carbs.
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