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The tip of the problem with spark plugs and wires

A friend of mine messaged me recently asking if I could walk him through the process of adjusting the valves on a newly installed engine in his BMW 2002. Since, as I wrote in this story a few years ago, valve adjustment needs to be done on a dead-cold engine; the thing to do was for me to come to him. It wasn’t hardship for me to drive one of the cars the hour from Newton out to Worcester on a cool Saturday morning on Memorial Day weekend. The fact that my friend is a veteran made me all the happier to do him the favor.


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A typical problem with Weber side draft carbs has to do with the air emulsion tubes that reside under a brass fine-mesh screen between the chokes. Also, was the distributor vacuum advance checked for the proper amount of movement? To get more out of a performance-enhanced engine, the installation of a standalone wideband O2 sensor would be a major benefit. Then, a more accurate diagnosis could be made regarding the fuel/air mixture.

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