Picking your brain

Shovelhead

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Installed Hugh’s ignition new tcbros carbs runs like shit any idea what to try to at least get it to idle so I can set timing lots of backfire
 
Backfires are often tied into too lean a gas mix. New carbs don’t mean they’re tuned to your bike. Check your carbs first. Even when they say they are set they’re not always. Turn down the gas on the carbs as much as you can then start slowly bringing it up to find the sweet spot.
 
Need to know more information..........What is the ignition system you bought.............if you bought Hughs CDI and PMA then your problems could be timing causing the backfiring if the tiiming marks were off when PMA installed.

Read what Griz posted this morning.........
Post #8............. https://www.xs650.com/threads/calling-5-twins-need-jetting-help.60666/
According to a 1998 poll taken by the American Association of Shadetree Mechanics, 20% of carburetor problems were traced to compression issues, 5% to cam or valve train, 70% to the ignition system, and the rest to the carbies. You gotta have fire to burn the fuel!
 
Have same.set up here. Hugh's ended up sending me a new cdi after we discovered it wasn't advancing.

Tc bros says the give u a rough tuned carb but u need to do adjustments. I discovered there pilot jet 17.5 is to small and runs really lean.
 
Installed Hugh’s ignition new tcbros carbs runs like shit any idea what to try to at least get it to idle so I can set timing lots of backfire
Upsize your pilot jet a bit. Go like 5 Sizes bigger. When I bought TC's carbs biggest pilot jet they give you for the 17.5 and they don't account for elevation I went to a 22.5 just to get the bike to idle right depending on where you are and what your elevation is your needs are going to change I for example I'm at 500 ft above sea level.
 
Gratitude.......it’s a nice word!
Gratitude is from the rest of us lurking on the sidelines gleaning a hint of your hard-earned wisdom. When I get another ride on my Tracker I may have some observations on jetting deficiency. I seem to " burbble" at part throttle 25 to 35mph. I can formulate my impressions with more saddle time.But, until I post a question, please get on with your lives.. These responses so far have me studying and thinking.
 
Gratitude is from the rest of us lurking on the sidelines gleaning a hint of your hard-earned wisdom. When I get another ride on my Tracker I may have some observations on jetting deficiency. I seem to " burbble" at part throttle 25 to 35mph. I can formulate my impressions with more saddle time.But, until I post a question, please get on with your lives.. These responses so far have me studying and thinking.

A fair response teamWicked, but that comment wan't aimed directly at you or anyone really. When help or advise is freely given, a word of acknowledgement goes a long way.:)
 
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