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Tachometer reading high |
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Ohop Bob 
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Joined: March-14-2021 Location: Eatonville Status: Offline Points: 2 |
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 Topic: Tachometer reading highPosted: July-05-2022 at 10:54pm |
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1996 GT 40 new to me. replaced 2 injectors. Sarted boat and it would only idle down to 950 RPM. went back out the next week with the intention of checking timing advance. When I started it it would only idle down to about 2,000. But it really does not sound that high to me. I think the tack is reading double. How can I check this
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KENO
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Joined: June-06-2004 Location: United States Status: Offline Points: 11197 |
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Posted: July-06-2022 at 6:38am |
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Buy yourself a present and get yourself a high tech digital advance timing light with a built in tach feature.
An Innova 3568 comes to mind or an Innova 5568 if you want to spend more and get another feature or 2 it's fun to play with all the buttons too  Or use a multimeter with a built in tach feature |
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pjsmoreno
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Joined: April-25-2016 Location: Liberty, Mo Status: Offline Points: 199 |
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Posted: July-07-2022 at 6:47am |
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I’m with Keno on getting a digital advance timing light with
the built-in tach. Retired my on old Sun timing light a few years ago for one on
these. |
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