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81 240 wagon (not FI), stumbles and bumbles first thing, but only under load.
Starts fine, runs fine when given throttle at idle. When I try to get going, I have to really rev it up and feather in the clutch or it falls on its face hesitating.
Since rpms climb fine when I give it gas at idle I am not sure what conclusion to draw.
Is the mechanical fuel pump clogged?
Is the carb out of sorts in some way? I maintain the ATF level in it, the damper action is good.
The only fuel filter is a screen in the fuel pump (Pierburg).
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Stef -- 1981 wagon B21A SU M46 317000km
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