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ignition, kill switch, pinging, timing

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  #1  
Old 29th August 2019
T_worth T_worth is offline
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Default ignition AFTER kill switch engaged.

I have a 97 xl1200 sport with a s&s super E carb (with thunderjet installed) and paughco upsweep pipes. I am running NGK DCPR7E plugs.

I'm in the process of jetting my carb still, but I think I'm pretty damn close. The bike idles and runs well. I have two timing concerns with the bike. I'm getting a pinging/knocking sound at low throttle and sometimes when I hit the kill switch while in Neutral, my engine will roll over a few times.


Would both issues be from my timing being off?

I read about normal summer riding heat, heavy loads, higher octane fuel, etc but would like to know if its related to my timing being off.
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Old 29th August 2019
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Have you set the timing according to the manual?

Don't lug the engine - keep the revs up above 2500-3000 when operating the bike...

Here's the Sportsterpedia section on setting the timing - Note the small movement that makes BIG changes in the timing...

http://sportsterpedia.com/doku.php/t...dels_thru_2003

Have you checked the plugs for burning lean? Have you checked for intake air leaks with a propane torch?

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  #3  
Old 30th August 2019
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Sounds like it’s got way too much advance.
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Old 2nd September 2019
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Quote:
Originally Posted by Davo_137 View Post
Sounds like it’s got way too much advance.
I got a timing gun. The 2 timing marks appeared slightly to the right side of the center inspection hole. Is the right side “advance” and left side “retarded”?

After I remove the rivets from the timing cover, what size screws should I use to reattach cover?
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Old 2nd September 2019
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I don’t know how to time your engine sorry, you might have to buy or download a workshop manual.
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