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I have a problem of getting fuel. Changed filter, new gas pump and cleaned carb. Stll the van will idle but will stall out when you try to give it any gas. Any ideas
Jerry,
When you say you cleaned the carb did you rebuild it. If not, and depending on how old the carb is or since it was last rebuilt, it could be as simple as a bad accelerator pump. With the engine off operate the accelerator and look in the venturi to see if fuel is sprayed in a continuous pattern out of both jets. Shouldn't be any breaks, sputter, etc., and if there is probably a rebuild is in order. Electrical problems in the ignition can cause problems, but not usually in acceleration unless the advance mechanism isn't working properly. If the distributor is a vacuum advance type, check the vacuum connections and on GM HEI a common problem is rusting of the advance mechanical unit at the top of the rotor shaft under the rotor. Remove it and spray with WD40. These rust and keep the advance from working properly which will cause stumbling and stalling on acceleration.
Au contraire re; weak ignition not causing acceleration problems. It is during acceleration that the heaviest demand, (read highest voltage requirement), is placed on the ignition system. Why?, because that's when cylinder compression pressures are highest, as opposed to at idle or closed throttle when pressures are lowest, resulting in lowest voltage demands from ignition system. A little time on the 'scope will show if the ignition is the cause of the problem. |
RV and bus conversion info since 1996.
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