Question about 1988 Volvo 760
It is most likely going to be between 5 and 15 degrees BTDC. I would put it at 5 degrees BTDC. At idle, if the motor is extremely quiet, but the exhaust loud, move it to 10. As you advance the timing, the motor should become louder and the exhaust quieter (at idle). As you increase RPMs, the motor should get quieter and the exhaust louder. This is only true with an injector pump that has static timing (does not automatically increase with increased RPM).
If your engine has dynamic timing (automatically advances with increased RPM), then I would set the timing at 5 degrees, test run. Maybe change to 7 degrees, test run...etc. Basically, don't make dramatic changes with the injector pump timing if it is dynamic. I hope this helps.
Posted on Sep 19, 2010
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Posted on Jan 02, 2017
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