66' 175 Puch stall after 30 min

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Joined:Thu Dec 17, 2020 9:49 pm
66' 175 Puch stall after 30 min

Post by metalincarnate » Thu Dec 17, 2020 10:12 pm

Hello all! Greetings from New Mexico, USA. I recently came across a 66 Puch and snagged her for 350 bucks. Got her running shortly after. All she needed was the key! Tuned her up, but I keep having this problem. The bike stalls after about 30 min of normal street riding. The moment I take her out she feels strong and nice, but slowly throughout the ride I feel the power dropping. Even stalls sometimes at a complete stop after awhile, then shortly after, just dies mid ride. I went through the fuel system, tuned the carb, check float, needle, etc. I swapped a modern coil, still 6v, that seemed to help a little, but still stalled. She is stubborn to start after the stall, and will not properly run as soon as I put it in gear, very sluggish. Clutch linkage is proper. It has new oil. Fuel tank is clean. I was getting some air bubbles/pockets in the fuel line, which I attributed to the problem ,and perhaps some stalls, But keeping an eye out, the majority of the time it stalls the fuel line is filled and present. I've even tickled the tickler on the carb near times it was about to stall, its mostly predictable. I'm thinking its an electrical issue of some sort, but I'm looking for your expertise! Thanks for everyone's time! Cheers!
Joined:Sat Jun 25, 2011 9:32 pm
Location:Kansas City USA

Re: 66' 175 Puch stall after 30 min

Post by Draco63 » Fri Dec 18, 2020 8:28 am

Have you tried taking the fuel cap off when it stalls? You may have a tank venting issue.
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Joined:Thu Apr 18, 2013 11:36 am

Re: 66' 175 Puch stall after 30 min

Post by chrisonpuch » Fri Dec 18, 2020 11:19 am

Sounds more like an electrical issue to me. Check your coils maybe?
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