![]() This is especially prevalent on engines with a chrome or stock timing chain cover that is actually bowing forward allowing the cam to "walk". On Chevrolet engines, if the timing is retarding 10 - 20 degrees inspect for cam-walk. The correct polarity is whichever connection gives the most retarded timing. Reverse the connectors and check the timing again. It is best to route it along a ground plain such as the firewall, frame or engine block to form a shield around it.Ĭheck the polarity of the magnetic pickup wires of the distributor. item 4 Craftsman Professional Advance Inductive Timing Light 21023 NEW SEALED Craftsman Professional Advance Inductive Timing Light 21023 NEW SEALED. The timing was spot on at 18 with a total of 36 all in at 2800 rpm. It should be routed clear of the coil primary wires and plug wires. Inspect the routing of the Magnetic Pickup Harness. Make sure you are not using Solid Core wires. Try another non-adjustable light and check the timing again. Dial back timing lights are not recommended. What kind of timing light are you using? Many lights have trouble reading the MSD's capacitive discharge multiple sparks. If your timing seems to be jumping all over the place, check the following items: I guess I know what light to get now Thanks. Xenon Inductive Timing Light W 60deg Dial Advance Ignition Spark Engine Checker. Equus 3555 Advance Timing Light Analog Dial Metal Pickup. After this test I will not worry about the digital light giving me false readings.Jeff Thanks here is the tech tip from MSD on lights. This site contains Ebay partner affiliate links, which may earn us a commission at no additional cost to you. I wanted to verify that my timing settings were what I thought they were. I had only used the digital light on this motor. ![]() After reading this thread I was worried that the newer digital light might be giving me some false readings. The only reason I conducted this test was to prove to that my timing settings were correct. ![]() The MSD box did not give any problems with either light used. Here are the diagrams and repair parts for Official Craftsman 161219401 inductive advance timing light, as well as links to manuals and error code tables, if available. I did the tests back to back several times and had no differences between either light. I got exactly the same readings with this light. It has no dial back capabilities just a straight up timing light. Second timing light old sears analog inductive light that I bought back in 1982. I could use the dial back to set the pointer at 0* and rev the motor to any rpm with steady readings. The timing was spot on at 18* with a total of 36* all in at 2800 rpm. All timing readings were done with the vaccum advance unhooked and plugged.įirst timing light is an Equus Innova 3568 digital timing light with tach and digital dial back capabilities.
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