Hello all,

Here's the deal, I'm trying to solve a slight pinging under light load.

84 B23F auto Bosch dist. knock sensor has been changed (89 octane R\M+2)

(1) At idle the timing mark spends most of the time at 10 degrees BTDC, but jumps around from about 12 to 8 degrees BTDC.

(2) The timing advances to 38 or 40 degrees BTDC at 2000 rpm's, is this to much
to soon?

(3) Also the distributor is frozen into the block. Whats the fix for this?

Thanks for any help possible
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Bruce S. near D.C.

Bruce,

1. Probably some wear in the distributor shaft bushings. I'm guessing that the distributor could be rebuilt, re-bushed, etc. Try to wiggle the rotor and see if there is any play. I probably wouldn't get too excited about this until wear got worse.

2. Don't know advance spec, shop manual should have it.

3. Take a piece of wood, a piece of oak flooring ripped to about 1.5 inches wide works well, a give the body of the distributor a few taps. It will come free, don't be afraid to use a little penetrating oil down there. Maybe even warm the engine up a little first. Weird thing is mine has stayed loose since a whapped it several years back.

Mike, Thanks for the advise.
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Bruce S. near D.C.