frequency valve, 200tq '89 MC2

[JanDebL at aol.com]

Have you pressurized the intake system to check for leaks?  Most type 44s 
have a T in one of the intake tract hoses or you can add one yourself.  First 
you need to seal up the intake system. Loosen the upper & lower clamps on the 
steel tube between the IC and the fuel distributor.  Pull the tube out of the 
fuel distributor boot and put a 2 inch rubber water pipe cap (available at 
most hardware stores) on that end and clamp it down.  Connect your shop air 
supply, regulated down  - less than 5 psi - to the T and listen for leaks. A 
bottle of soapy water can help but you should be able to hear any leaks and / 
or verify there are no leaks.  For the 20v 2C engine, I made a cap by using a 
front wheel bearing housing from an A2 VW (it was handy and fit the intake 
hose perfectly) and welded a plate with a fitting on it so I have the cap and 
the T fitting all in one assembly.
By the way, this is the second thing I do (after a compression test) to each 
car that I has a drivability problem.  You either find any air leak problems 
or know there are none.
HTH, Jan Lahtonen
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