Re: Rochest carb choke problems
NEVER attempt to adjust the choke on a warm engine. Always do this on a stone cold engine. Open the throttle to allow the linkage to "set" the choke. The choke plate on a cold engine should not "snap" closed but should close fully. If it doesn't close or it literally snaps closed, loosen the three screws and rotate the black disc conter clockwise until the choke begins to open. Then rotate the other way until it just closes. Tighten the screws. Now start the engine. Immediately after starting, the vacuum operated choke pull off should open the choke a little bit. As the engine warms, the bi-metal spring behind the black disc will heat up and open the choke the remainder of the way until is standing vertical. If the choke plate does not open up a little immediately after startup, you have a bad choke pulloff or that linkage is not adjusted correctly.
The downward facing tube in the circle on Reel Poors picture is the fitting for a tube that goes to the "choke stove" or heating chamber on the intake manifold. Hot air is drawn through this tube to heat the spring in the choke housing. If it's missing, broken, or clogged, the choke will never work right regardless how you adjust it.
