when i crank my truck up its @ 10 degrees but when i rev it up it goes to about 20 degrees and stays when i cut the truck off and recrank it, it goes right back to 10 degrees is this normal? i have greased the wieghts and have checked the vacuum advance lines and they are right. please help me?
2007-09-25 08:02:44 · 4 answers · asked by Anonymous in Cars & Transportation ➔ Maintenance & Repairs
Should go higher if you increase the RPM. You have two advances on a mechanical distributor. The centrifugal & vacuum. Both work together. Vacuum at the lower end & the weights at the higher end. Make sure something is not caught in the plate.
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2007-09-25 08:25:27 · answer #1 · answered by Mr. T 7 · 0⤊ 0⤋
You should be seeing more advance then that. It should be near 40'.
Unplug the vacuum advance and re-test. If it still does it, it is a problem with the mechanical advance. If it goes away, it is the vacuum advance.
2007-09-25 15:25:31 · answer #2 · answered by epitt72 3 · 0⤊ 0⤋
I agree, the plate is binding. If lubing it and working it dont work, clean it with carb cleaner, and use a polishing compound like blue magic, and "lap" it......work it back and forth. Be sure to clean it completely afterwards and lube it with a heavy, heat resistant grease.
2007-09-25 15:26:48 · answer #3 · answered by blackbird455 2 · 0⤊ 0⤋
the mechanical advance plate is binding... try wd40 on the shaft area and work back and forth by hand with the rotor on
2007-09-25 15:21:21 · answer #4 · answered by John St.Louis 5 · 0⤊ 0⤋