A few years back, upon first starting the engine of my 1960 BT7 after
restoration, the engine ran real rough with some sort of unusual sound
coming from the carburetor/intake manifold area. After a few minutes of
scratching heads, we looked in the parts book and discovered that the engine
was suppose to have 2 manifold drain lines. I has driven the car for 3 or 4
years back in the early 1970s without these drain lines and it ran fine.
However, after installing the proper copper drain lines, the engine ran
fine. I assume this is just another case of a Healey-no-explanation case.
Ron Ray
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