* 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. * Check the polarity of the magnetic pickup wires of the distributor. It is best to route it along a ground plain such as the firewall, frame or engine block to form a shield around it. 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: Ahhhhh you see the problem don't you! If the processor is fast and is inturperting the multiple signals as 3000rpm, 1000rpm, 3000rpm, 1000rpm, how much does it delay before it flashes the strobe?Īt least that's the way it was explained to me. The 'dial back' timing lights process the signal, and use time between signals ( rpm's ) for 'when' to flash the strobe. Put your inductive light on that wire and see if they both indicate the same on the timing tab. Remove the #1 plug wire and use the cheepie timing light as your plug wire. The best check I have found on if your timing light is giving you good info or not is the ultra cheepie (non inductive) lights that plug between the sparkplug and the spark plug cable.
The bad part can be that you don't know 100% for sure what your really have, an accurate flash of the strobe, or a delayed flash, or no flash because of confusing multiple signals. (does that make sense?) Anyways, that's why some work, some don't. Others may only process the first signal, and skip any that is incoming while it's processing the first. BOSCH (FIX 7527 Inductive Timing Light 75 3 offers from 89.94 23 KUNTEC Automotive Engine Timing Light 12V, Xenon Ignition Timing Light,Inductive Strobe Timing Light Tool for Car Vehicle Motorcycle 3 24 Actron CP7527 Inductive Timing Light 594 10 offers from 69. A lesser timing light may not be able to process the signal and flash the strobe before the next signal comes in, so it figures 'too late' and just process the 'next' signal. Other lights not acquainted with the multiple strike concept may not be able to process the rapid incoming signals and flash the strobe at the 'first strike' of the coil. A MSD timing light suposedly has the circutry to filter out the multiple strikes and give accurate flashes at the first firing of the coil (which is what we want). It's kind of like going from 3000rpm to 1000rpm between cylinders firing. Even tho the mulit-strikes happen in milli-seconds, it happens fast enough to confuse the processor in the timing light. To learn more about how and for what purposes Amazon uses personal information (such as Amazon Store order history), please visit our Privacy Notice.What I have heard is the multiple sparks (below 3000rpm) is what screws with the inductive timing lights. You can change your choices at any time by visiting Cookie Preferences, as described in the Cookie Notice. Click ‘Customise Cookies’ to decline these cookies, make more detailed choices, or learn more. Third parties use cookies for their purposes of displaying and measuring personalised ads, generating audience insights, and developing and improving products. This includes using first- and third-party cookies, which store or access standard device information such as a unique identifier. If you agree, we’ll also use cookies to complement your shopping experience across the Amazon stores as described in our Cookie Notice. We also use these cookies to understand how customers use our services (for example, by measuring site visits) so we can make improvements. We use cookies and similar tools that are necessary to enable you to make purchases, to enhance your shopping experiences and to provide our services, as detailed in our Cookie Notice.
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