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Classic car technician Jonn has been looking at our 1965 Aston Martin DB5 to find out why it is running poorly. Here are his notes:
Raise on ramp and check underneath for anything obvious regarding reported knock from rear. Found nothing of note at this point. Remove, clean and regap spark plugs. Lower to ground and run up to temp. Car w9nt idle even when warm. Strip and remove carburettor suction Chambers and pistons. Thoroughly clean and refit. Run up and car idles now. Put new fuel in 10ltrs. Carry out road test. Car better but under heavy acceleration it coughs occasionally. This maybe to do with extreme under bonnet temperature as its awful hot ambient temp today. Adjust cold start throttle stops and mixture. Lower idle speed. Carry out further road test, seems better now. Bounce Car rear end as I heard a knock when road testing. Found nearside rear shock unit linkage worn and has play when wheels on the ground. Requires new linkage.
