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244 coughing

Greetings from NZ.

244, 2.1 ohc manual, 1978-ish, with an overhauled motor and single Stromberg is coughing and hesitating at a steady speed. It misses and even occasionally backfires on a steady throttle or when you put your foot down, then it runs smoothly while accelerating. Could it be a blocked jet? It had been sitting for a while before I bought it back a couiple of weeks ago. Advice sought and gratefully received; may be also looking for a diagram of the carb and location of jets. TIA and cheers
Reply to
bonspiel
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Don't forget the ignition circuitry.

Cheers, Peter.

Reply to
Peter Milnes

It may be a fueling problem, but start with the ignition before making any adjustments to the carb. Ignition needs to be set up properly to make any sense of subsequent fueling adjustments.

Is '78 points ignition? If so, start by checking the ponts gap, and set the ignition timing correctly. If there is no improvement, start checking the condition of ignition parts and replace if in doubt. This includes spark plugs, points and condenser, the distributor cap and rotor arm, possibly the coil and all leads. Faults here can be invisible to the naked eye, so if in doubt replace with new. Also, find the little tube that goes to the vacuum advance unit (a small flying-saucer on the side of the distributor), pull it off where it plugs onto the inlet manifold or carburettor, and suck on it. There should be some resistance. If the distributor cap is off, you should see the base plate inside move. If none of this happens and the tube is not blocked, the the vac. unit is probably duff.

Reply to
Stewart Hargrav

Thanks, will do ignition items one at a time.

Reply to
bonspiel

Reply to
Anton Sather

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