Jlpettimore Posted September 19, 2020 Report Share Posted September 19, 2020 Hi al Got a TY175 recently and nice looking bike. Starts OK but will only run for a few minutes then bogs down after riding for a few minutes. When you let the clutch out when pulling away, doesn't want to go, bogs down and have to give it a lot of revs, but then eventually it dies and won't start again then. Any ideas? I think carb related as repalced spark plug and air filter is clean. Many thanks! Quote Link to comment Share on other sites More sharing options...
guy53 Posted September 19, 2020 Report Share Posted September 19, 2020 Exhaust blocked ? Does it stall if you let it idle for a while ? How does it sound when it run? Guy Quote Link to comment Share on other sites More sharing options...
paulmac Posted September 19, 2020 Report Share Posted September 19, 2020 Check the vent pipe on the fuel Filler cap isn’t blocked, if it is you’ll get a vacuum build up in the tank and fuel won’t flow into the carby. Quote Link to comment Share on other sites More sharing options...
Jlpettimore Posted September 19, 2020 Author Report Share Posted September 19, 2020 2 hours ago, paulmac said: Check the vent pipe on the fuel Filler cap isn’t blocked, if it is you’ll get a vacuum build up in the tank and fuel won’t flow into the carby. Thanks. Tried that but no joy. Quote Link to comment Share on other sites More sharing options...
Jlpettimore Posted September 19, 2020 Author Report Share Posted September 19, 2020 3 hours ago, guy53 said: Exhaust blocked ? Does it stall if you let it idle for a while ? How does it sound when it run? Guy It will idle OK. I took the exhaust baffle out and replaced it with a new one. Old one was totally choked up and oil sparking from it when running. Still doing same though ?♂️ problem seems to be when you let the clutch out it just bogs down after running a while. Then tops completely until the engine cools down. Quote Link to comment Share on other sites More sharing options...
paulmac Posted September 19, 2020 Report Share Posted September 19, 2020 Carb clean next... Quote Link to comment Share on other sites More sharing options...
majesty Posted September 19, 2020 Report Share Posted September 19, 2020 It's worth replacing the o rings in the carb : https://www.tytrials.com/trailandtrialsuk/prod_189281-4-9-14-17-20-Carb-Repair-Kit-TY175.html 2 Quote Link to comment Share on other sites More sharing options...
Jlpettimore Posted September 19, 2020 Author Report Share Posted September 19, 2020 3 hours ago, paulmac said: Carb clean next... Tomorrow's job! Cheers Quote Link to comment Share on other sites More sharing options...
Jlpettimore Posted September 19, 2020 Author Report Share Posted September 19, 2020 3 hours ago, majesty said: It's worth replacing the o rings in the carb : https://www.tytrials.com/trailandtrialsuk/prod_189281-4-9-14-17-20-Carb-Repair-Kit-TY175.html Yep going to get one of those ordered. Thanks Quote Link to comment Share on other sites More sharing options...
bashplate Posted September 19, 2020 Report Share Posted September 19, 2020 yes had a similar problem with a 175, the wee o ring did the trick. 1 Quote Link to comment Share on other sites More sharing options...
misscrabstick Posted September 20, 2020 Report Share Posted September 20, 2020 Sounds possibly like the sparks system breaking down with heat, it is like 40 odd years old, suggest confirm bared ht lead (no cap just end of lead after removing cap) to engine metal test when it's broken, see if it can make 5mm gap when being kicked, if not suggest get electronic ignition kit. 1 Quote Link to comment Share on other sites More sharing options...
Jeff B Posted September 21, 2020 Report Share Posted September 21, 2020 Runs for a few minutes? Is it running out of gas in the float bowl? The reason I ask, it looks like a Sammy Miller gas tank-seat. Fiberglass. Fiberglass and some fuels just don't get along. The fiberglass gets soft and mixes in the tank and can clog thinks up. Pull the fuel line off of the carb. It should pour out. if it drips, well you know. Also..if that is a fiberglass tank, it should be coated to prevent it from being ruined by the fuel. BTW good looking bike. 1 Quote Link to comment Share on other sites More sharing options...
Jlpettimore Posted September 21, 2020 Author Report Share Posted September 21, 2020 Many thanks. Will try that to see if it helps. Quote Link to comment Share on other sites More sharing options...
dpyam Posted September 29, 2020 Report Share Posted September 29, 2020 As mentioned a while ago in other posts, Aspen fuel, while expensive is at least free of ethanol and so can be used in fibreglass tanks. Quote Link to comment Share on other sites More sharing options...
charlie chitlins Posted October 28, 2020 Report Share Posted October 28, 2020 Is it a breaker ignition? Could need to file/set the points, and condensers have a shelf life. Even many of the "new" ones are old and useless. Quote Link to comment Share on other sites More sharing options...
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