![]() Hope this helps and I would definitely look up how to use a timing light in more detail as well as read through the instructions that came with yours.That is probably the best reply I've seen. The light just shows you where the ignition timing is at. The timing light, when hooked up, shines a light every time it feels an ignition pulse in cylinder 1 and that light is then shown onto the marks in the crank pulley, but the actual adjustment is made by rotating the distributor. : Testing Vacuum Advance 1 cylinder wire. reV 07h, 09f, 09g SKU 40963 For technical questions, please call 1-80. 1 Many vehicles have two timing marks: One at TDC and another at 10° before TDC. If not, then loosen the bolts on the distributor and pivot it left/right to adjust ignition advance/retard until the red mark lines up. : Timing Adjustment Stop the engine. So with your timing light set to 0°, it should show the RED mark in line with that plastic line. In the picture above, the lone white mark marks tdc when it's in line with the plastic line right above it. ![]() Hope this helps and I would definitely look up how to use a timing light in more detail as well as read through the instructions that came with yours. If not, then loosen the bolts on the distributor and pivot it left/right to adjust ignition advance/retard until the red mark lines up. Top dead center is when piston#1 is at the very top of it's rotation. Your damper may have slipped or the timing cover could be wrong for the application or you might have some unknown problem but positive stops are the only way to find absolute TDC.Ok, so what it means is that with your ignition light dial set to 0 degrees, you adjust the distributor timing so that the timing light reads ignition pulse as 16° behind top dead center (tdc). Mark it with two lines leaving a very small space between the lines and use it for your timing mark. Remove the adapter and measure the distance between the two marks and find the mid-point. Turn the engine over in the opposite direction until the piston hits the adapter and stops - mark the balancer where the pointer is. Turn the engine over by hand until the piston hits the tool and stops - mark the balancer where the pointer is. Put the plugadapter into the spark plug hole with battery disconnected. It is easiest to do with the head off but you can find TDC with an adapter made from a sparkplug. Any suggestions? Thanks.ĭid you verify that when the mark is on TDC that the piston is at TDC with a positive stop or are you using the cam timing to verify the timing? Timing has to be wrong but I've never seen an engine run with that much advance at idle. Red wire on distributor is connected to coil +. Timing advances even more with increased rpm. Both timing lights indicate same, engine runs ok at about 35 to 40 degrees. I even tried a different timing light to verify because mine has an adjustment knob for checking timing. ![]() You will see a number ranging from 32 to 40 degrees, which would be the total of initial plus the mechanical advance. The engine does turn over hard like the timing is off but when I try to adjust it back toward 0 degrees, it starts to run rough and dies at about 20 degrees. Push the advance button on the dial-back light (or turn the dial) until the zero mark on the balancer lines up with the zero mark on the timing tab. I have double checked the timing marks and verified TDC is at 0 degrees as indicated. The engine will only run with about 35 to 40 degrees of base timing. No ignition box is used, just a Flamethrower coil. The engine has a crane cams hydraulic cam, powermax 266, running 10:1 compression, edelbrock performer 289 intake, edelbrock 1406 carb, 600cfm, electric choke, and a Mallory 47 series Unilite distributor.
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