W115 76 240D issues - Page 2 - Mercedes-Benz Forum

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post #11 of 13 (permalink) Old 03-08-2013, 05:10 PM
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Date registered: Aug 2009
Vehicle: '72 250C, '74 280C, '85 500SEL, '81 300CD.
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Which diaphragm?
Governor, brake check valve or...?
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post #12 of 13 (permalink) Old 03-08-2013, 08:56 PM Thread Starter
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Date registered: Aug 2010
Vehicle: 1976 W115 240D
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Quote:
Originally Posted by Mike D View Post
Check the vacuum pump for your idle and possibly the smoke issue.
The diaphragm ( I want to know what spelling genius came up with "diaphragm") on the rear of the injection pump can cause the high idle/smoking also.
This one... the one that was suggested to be the culprit for the excessive smoke when in idle and the high engine rev after placing in the vehicle in PARK.
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post #13 of 13 (permalink) Old 03-09-2013, 01:40 AM
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Quote:
Originally Posted by ArmyAnt View Post
This one... the one that was suggested to be the culprit for the excessive smoke when in idle and the high engine rev after placing in the vehicle in PARK.
Are you sure the diaphgram is leaking? Have you checked the axle of the poppet cam?
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