How do you set the timing on a 1987 Fifth Avenue?
This is a bad answer because the 1987 fifth ave. doesnot have a vacumn advance on or near the distributer! Pull and plug the vacumn tube going to the distributor. Loosen the distributor hold down clamp, using a timing light on No. 1 spark plug (the front plug on the driver's side of the motor) turn the distributor until desired timing is obtained.
the timing is computer controlled when there is no dist.---which became standard in 1987---previous to that you rotate the dist. and set it to the number of degrees advance that the decal under the hood says---some where around 10---the timing marks are behind the harmonic balancer (which is on the end of the crankshaft)