View single post by Mark Rosenbaum
 Posted: 05-14-2007 03:20 am
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Mark Rosenbaum

Joined: 03-12-2005
Location: Kingman, Arizona USA
Posts: 532
At the absolute minimum, there should be a filter upstream of the fuel pump to protect the pump from rust and debris in the fuel tank.  IMHO there should also be a filter just upstream of the tee between the two carburetors, to protect the carbs from any rust developing in the fuel line itself, or from disintegration of the pump internals.  If this is overkill, so what? -- no harm is done.

Poor response during acceleration is most often caused by low or incorrect damper oil.  Almost invariably, with a stock or nearly stock engine, the correct oil choice is the same viscosity as that used in the crankcase: 20W50 whenever the average temperature is 32°F or above, or 10W40 when colder.

Sections C11 and D3 of the shop manual contain the official procedures for setting up the balance and fuel/air mixture adjustments on Stromberg carburetors, but they were written more as guidelines for the professional mechanic in an era where Strombergs were considerably more common than nowadays.  I've been toying with a rough draft of a carburetor adjustment procedure that may be more convenient for the modern owner.  Send me an email if you'd like a copy to try out.