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Author Topic: injection pump  (Read 4729 times)

June 09, 2009, 08:14:04 pm

dave friday

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injection pump
« on: June 09, 2009, 08:14:04 pm »
hi all,anyone know what causes the engine revs to go up and down [just above idle 1000/1200 rpm].
ta.
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1992 1600 td syncro camper
Reply #1June 09, 2009, 11:20:11 pm

rabbitman

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Re: injection pump
« Reply #1 on: June 09, 2009, 11:20:11 pm »
Make sure all the IP mounting bolts are tight and that the brackets aren't cracked.
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'82 Rabbit, I put on a euro vnt-15, 2.25" DP, 2.5" exhaust, the result.....it whistled.

I removed the turbo, made a toilet bowl 2.5" DP, the result....it was deafening. Now it has a homemade muffler up front and a thrush in the rear, the result.....less loud.
Watch: AGENDA, GRINDING AMERICA DOWN
Reply #2June 10, 2009, 03:05:30 am

dave friday

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Re: injection pump
« Reply #2 on: June 10, 2009, 03:05:30 am »
thanks for that,the fixings are all ok,it could be a mis-fire as the engine shakes a bit [i know of two other vans with the same problem!], my knowledge of injection pumps is a bit limited,could it be sucking air at those revs? [ i p drive shaft has a bit of radial play ].
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1992 1600 td syncro camper
Reply #3June 10, 2009, 12:53:31 pm

rabbitman

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Re: injection pump
« Reply #3 on: June 10, 2009, 12:53:31 pm »
Yes, air can cause missing.

A clear fuel hose feeding the IP would let you see if there's bubbles.
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'82 Rabbit, I put on a euro vnt-15, 2.25" DP, 2.5" exhaust, the result.....it whistled.

I removed the turbo, made a toilet bowl 2.5" DP, the result....it was deafening. Now it has a homemade muffler up front and a thrush in the rear, the result.....less loud.
Watch: AGENDA, GRINDING AMERICA DOWN
Reply #4June 11, 2009, 09:13:30 am

airhead

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Re: injection pump
« Reply #4 on: June 11, 2009, 09:13:30 am »
Mine does this a little bit too when its warming up but seems to stop once it gets up to operating temperature. I dont worry about it.
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Reply #5June 11, 2009, 03:24:56 pm

Rabbit TD

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Re: injection pump
« Reply #5 on: June 11, 2009, 03:24:56 pm »
Quote from: rabbitman on June 10, 2009, 12:53:31 pm
Yes, air can cause missing.

A clear fuel hose feeding the IP would let you see if there's bubbles.
Where in the world does a person get that clear hose at anyway.  Tractor Supply has some that says "Chemical Reistant" and I've been tempted to try it, what does anybody think about this?
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Reply #6June 12, 2009, 05:24:59 am

BlastIt

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Re: injection pump
« Reply #6 on: June 12, 2009, 05:24:59 am »
Auto parts store can get it for you. Some carry it in stock. Just tell them you need clear fuel line. They should
be able to hook you up.
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