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Old 07-06-2008, 06:53 PM   #8 (permalink)
Allan R
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Join Date: Jul 2008
Location: Edmonton, AB
Posts: 492
Hi Shane,
I had almost exactly the same problem with my 1983 Ninety Eight. From 77-83 I don't know how much change there was, but I'll bet it wasn't much because my system ran on vacuum too. Here's what I found: Check all your vacuum lines for signs of a leak. If you've got hardened old lines connecting the carb and transducer, they may look good but are not holding vacuum which can cause surging. Strangely enough, also make sure your carb is bolted down good and tight to the manifold so it doesn't have vacuum issues. The other thing to look for is a replacement transducer. (You're in Montreal? Check around salvage yards - also check Toronto greater Met area re-cyclers. Just based on age, it's possible the transducer is shot.

Allan R
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