vacuum m10
Moderator: martauto
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christo
- E30 Zone Newbie
- Posts: 83
- Joined: Mon Mar 05, 2007 11:00 pm
Hi lads I am looking for your help as i have a small vacuum pipe that has come undone under the dash drivers side and i cant see where to reconnect it help please? cheers christo.
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DHFiS
- Old Skooler
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- Joined: Sat Aug 12, 2006 11:00 pm
- Location: cambridge
It's not the pipe to the headlight height adjuster is it?
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christo
- E30 Zone Newbie
- Posts: 83
- Joined: Mon Mar 05, 2007 11:00 pm
no it is 316 m10 pierburg carb and the pipe comes from carb into bulkhead through rubber grommet on drivers side after that i dont know where it goes??? cheers christo.
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Brianmoooore
- E30 Zone Team Member
- Posts: 49360
- Joined: Mon Jan 10, 2005 11:00 pm
Been a very long time since I played with one of these still fitted with the Pierburg, and the memory is hazy! Most have long since had these replaced by a purely mechanical Weber.
The only part of the engine control on these that is inside the cabin is the primitive ECU that controls the carb. I can't remember any vacuum pipes, but if there is one going into the cabin area, it can only be going to this ECU.
The only part of the engine control on these that is inside the cabin is the primitive ECU that controls the carb. I can't remember any vacuum pipes, but if there is one going into the cabin area, it can only be going to this ECU.
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capnmchl
- E30 Zone Camper
- Posts: 1141
- Joined: Mon Feb 20, 2012 11:00 pm
- Location: Exeter, Devon
It either goes to the ECU or something to do with the dashboard. I might be wrong but it may be something to do with the fuel economy gauge.
Mine has become disconnected as well, but I run a Weber so it's not a problem. Unbolt the ECU and see if it goes into the back of it or up around it somewhere.
Mine has become disconnected as well, but I run a Weber so it's not a problem. Unbolt the ECU and see if it goes into the back of it or up around it somewhere.
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christo
- E30 Zone Newbie
- Posts: 83
- Joined: Mon Mar 05, 2007 11:00 pm
No why i think it is a vacuum problem is because when i start the car it is sluggish and this only happend since the pipe has come undone?
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verde
- Engaged to the E30 Zone
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- Joined: Thu Aug 25, 2011 11:00 pm
- Location: The Sticks
My e21 has what i suspect is a vacuum issue, and im wondering whether i should check for this pipe too. I have no idea where it should go thoughchristo wrote:No why i think it is a vacuum problem is because when i start the car it is sluggish and this only happend since the pipe has come undone?
Marrakesh brown tech 2 LSx loading.....
Raise hell praise Dale.
North East Drift Club - Hollerboys Drift
Raise hell praise Dale.
North East Drift Club - Hollerboys Drift
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votivequagmire
- E30 Zone Regular
- Posts: 428
- Joined: Wed May 24, 2006 11:00 pm
- Location: Swansea, South Wales.
My previous E30 was an M10 carb, and that vacuum pipe was fixed to the back of the clocks in the dashboard. IIRC it is to do with the fuel economy gauge. You'll need to remove the clocks to reattach it.
'88 325i M20, could've done with a sunroof.
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christo
- E30 Zone Newbie
- Posts: 83
- Joined: Mon Mar 05, 2007 11:00 pm
the economy is still working so its not for that any other ideas??? cheers.
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capnmchl
- E30 Zone Camper
- Posts: 1141
- Joined: Mon Feb 20, 2012 11:00 pm
- Location: Exeter, Devon
Tbh, my economy gauge still moves, and I don't even have an original carb in there, or that vacuum line connected. I assume it simply takes the speedo and rev counter pulses as a base measurement. I expect it's the only E30 that say's it does more MPG at 90 than 70.