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K jet 145 idles lovely but no throttle response 140-160 1974

posted by  planetman on  Thu Jul 20 19:32 CST 2023
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last visit: Fri Oct 24 09:29 CST 2014
[RELATED]

Pull the valve cover, remove the positive power wire at the ignition coil and isolate the wire to make sure it can't touch anything.

Make sure the car isn't in gear for a manual transmission or in park for an automatic and that the parking brake is set, then have someone turn the ignition key to start and check to see if any of the rocker arms aren't moving as much as the others.

If you can't get someone to help, get or make a remote starter switch and connect 1 wire to the starter trigger wire and the other to the the large wire or pole on the starter.

I'm not sure if it was an official recall, but Volvo had to replace under warranty a large batch of camshafts for the later 140s as they were wearing prematurely.

It's possible your engine never got the replacement camshaft.
--
Eric
Hi Performance Automotive Service (formerly OVO or Old Volvos Only)
Torrance, CA 90502
hiperformanceautoservice.com or oldvolvosonly.com






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