Question about Ford Laser
the most likely cause is a damaged vacuum pipe between the inlet manifold, and the brake servo unit.
this would account for the missing and idling, due to the extra air getting into the engine.
it will also account for the brake hardness as there will be no vacuum to the servo unit.
the pipe is probably between 1/2" and 3/4" diameter and go from the inlet manifold to the brake servo unit on the bulkhead. make sure this pipe is not split or damaged and it is connected securely at both ends.
it is possible that the manifold gasket is leaking, but it would be very unusual for this to happen unless the manifold has been disturbed
Posted on Apr 07, 2011
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Posted on Jan 02, 2017
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