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How to use a timing light

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Chris

10-25-2002 15:38:30




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Ok i see everyone talking about using a timing light and how much better it is so how do you use one. I dont own one. I am interested if i knew how to use. Thanks




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Clooney

10-25-2002 16:08:53




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 Re: How to use a timing light in reply to Chris, 10-25-2002 15:38:30  
Chris, that depends on what you want to use it on & what type of timing light you are thinking of getting.
~Basically the timing light is hooked to the #1 spark plug wire or even the coil wire & depending on the type of light, also hooked to a battery or other power source to power it, then pointed towards preset marks on the flywheel, harmonic balancer or other rotating part attached to the crankshaft. When the ignition sends a spark to the spark plug that the light is hooked to the light flashes & will stop motion on the rotating part it is pointed at [same as a strobe light] so the exact timing of that cylinder can be viewed as the marks line up between the rotating part & a stationary index mark. It is a very accurate way of seeing when a spark occurs in relation to timing marks. There are more expensive types of lights that can have the advance preset or adjusted right on the light so even a single mark at TDC can be used to set the timing.

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gene

10-25-2002 21:27:12




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 Re: Re: How to use a timing light in reply to Clooney, 10-25-2002 16:08:53  
becareful when choosing a timing light some of them dont work with the 2 cylinders. i have had seveal that just clip over the spark plug wire an they sometimes dont work. i have done some research i was told that with some of the preset ones the 2 cylinder do not porduce enough energy in the wire to make the light work
just my 2 cents worth johndeeregene



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Clooney

10-26-2002 02:32:27




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 Re: Re: Re: How to use a timing light in reply to gene, 10-25-2002 21:27:12  
Gene, that has more to do with the non TVRS solid steel core plug wires. An inductive pickup timing light needs to have some resistance in the plug wire for current to be induced in the pick up. Just make a 1-2' carbon core jumper [from an old auto plug wire] wire to install between the solid core plug wire & the spark plug then clip your timing light pick up to that & it will work fine.
~There is a problem with some adjustable advance timing lights though due to the early 2-cylinder Deere's producing a spark on every revolution, but that can be off set by changing the settings to fool the light into thinking there are more cylinders...

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