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Author Topic: Pump question.  (Read 4046 times)

May 04, 2007, 01:50:25 pm

stewardc

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Pump question.
« on: May 04, 2007, 01:50:25 pm »
I really don't know what that diaphram thing does  up by the aneroid housing?. The engine/pump are from a Passat. Here are detail pics, can anyone tell me what it does? (NOTE: Giles Pump now in stealth semigloss black)



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Reply #1May 04, 2007, 02:02:13 pm

lyeinyoureye

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Pump question.
« Reply #1 on: May 04, 2007, 02:02:13 pm »
Isn't that the cold start advance?  :?
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Reply #2May 04, 2007, 02:20:08 pm

stewardc

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Pump question.
« Reply #2 on: May 04, 2007, 02:20:08 pm »
Quote from: lyeinyoureye
Isn't that the cold start advance?  :?


I think cold start is below that.
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Reply #3May 04, 2007, 02:21:16 pm

zukgod1

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Pump question.
« Reply #3 on: May 04, 2007, 02:21:16 pm »
Is it a turbo engine?

By aneroid are you referring to the top of the pump?

It's either a boost compensator if a turbo engine or a high alt compensator if NA.


dan
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dan

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Reply #4May 04, 2007, 02:27:12 pm

jtanguay

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Pump question.
« Reply #4 on: May 04, 2007, 02:27:12 pm »
it almost looks like something for cruise control... can't really tell what it is connected to though...

tell us what part it is connected to and we might be able to find out :)
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Reply #5May 04, 2007, 02:48:21 pm

stewardc

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Pump question.
« Reply #5 on: May 04, 2007, 02:48:21 pm »
The cable from it goes through the arm pictured and has a "collar" bolted to the cable to allow the diaphram to pull on the lever....I think. It can only pull the lever a little over 1/4 inch.
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Reply #6May 04, 2007, 05:00:43 pm

foxracer1

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Pump question.
« Reply #6 on: May 04, 2007, 05:00:43 pm »
Looks like something to up the idle. Maybe somethin for A/C?
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Reply #7May 04, 2007, 05:25:31 pm

935racer

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Pump question.
« Reply #7 on: May 04, 2007, 05:25:31 pm »
Thats a mechanical cold start accelerator. I think it keeps the timing plunger from from advancing before a certain engine speed. That one appears to be vacuum actuated.
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Reply #8May 05, 2007, 04:02:06 am

stewardc

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Pump question.
« Reply #8 on: May 05, 2007, 04:02:06 am »
Quote from: 935racer
Thats a mechanical cold start accelerator. I think it keeps the timing plunger from from advancing before a certain engine speed. That one appears to be vacuum actuated.


So it is independant of the normal cold start lever at the bottom of the pump???
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Reply #9May 05, 2007, 07:34:03 am

foxracer1

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Pump question.
« Reply #9 on: May 05, 2007, 07:34:03 am »
It looks like it is hooked up to the same place the cold fast idle linkage is on some pumps. All the timming stuff is down low in the pump.
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84 4dr Rabbit 1.6 N/A sold to friend
86 Jetta TD getting raced out AHU 02A
98 Jetta TDI Malone tune stg 3
91 S10 305 TPI T56
86 S10 2WD Prerunner project.


Now offering turbo rebuilds. HP or stock. Any turbo you have i can rebuild it for ya.
Reseal injection pumps PM for det
Reply #10May 05, 2007, 08:30:25 am

ricosuave

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Pump question.
« Reply #10 on: May 05, 2007, 08:30:25 am »
looks good painted like that! :lol:
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Reply #11May 08, 2007, 05:06:27 pm

soryu2222

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thingy
« Reply #11 on: May 08, 2007, 05:06:27 pm »
i am pretty sure that is idle speed boost for a/c
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