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Old 06-26-2006, 11:01 PM
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Location: Saugus, CA USA
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M103 Intake Mystery Vacuum Port

It started misfiring on the back cylinder (closest to the firewall) and after checking spark and fuel noticed an open vacuum port on the intake manifold of the back cylinder. When I covered the hole the engine started running on all cylinders. I looked all over, with a mirror even, and saw no sign of a mate. I have the service CD and couldn't find anything other than a background indication.

Where does it go, what does it do (if anything)?

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5 speed '91 190E 2.6 320,000 mi. (new car, fast, smooth as silk six, couldn't find any more Peugeots)
5 speed '85 Peugeot 505 2.5l Turbo Diesel 266,000 mi. (old car, fast for a diesel, had 2 others)
5 speed '01 Jetta V6 (new wifes car, pretty quick)
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  #2  
Old 06-27-2006, 12:57 AM
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Join Date: May 2001
Location: Northern Va.
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Look at this article:

http://www.peachparts.com/Wikka/M103VacuumLeak

and page down to step 2. There is a picture of a vacuum line for the EZL and does it apply to your car?
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  #3  
Old 06-27-2006, 11:08 AM
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Location: Saugus, CA USA
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That doesn't apply but further down a picture does, kind of. It refers to a vacuum line that goes to the automatic transmission, but I don't have that option. I guess there was just a plug that fell off, which is almost too easy to replace.

__________________
5 speed '91 190E 2.6 320,000 mi. (new car, fast, smooth as silk six, couldn't find any more Peugeots)
5 speed '85 Peugeot 505 2.5l Turbo Diesel 266,000 mi. (old car, fast for a diesel, had 2 others)
5 speed '01 Jetta V6 (new wifes car, pretty quick)
5 speed '85 Peugeot 505 2.2l Turbo Gas 197,000 mi. (wifes car, faster, sadly gone just short of 200k )
5 speed '83 Yamaha 750 Maxim 14,000 mi. (fastest)
0 speed 4' x 8' 1800 lb Harbor Freight utility trailer (only as fast as what's pulling it)
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