glemon
Yoda
Offline
My TR250 has developed a bad stumble on acceleration, it starts and idles ok, but even the idle seems a little off, power is way down.
I realized I hadn't replaced most anything since I got the car done 8 years ago. So I got a new cap, rotor, plug wires, and then a coil. No difference, I replaced the carb floats today still no difference, but tried some shadetree diagnostics because it is at my mom's house and I didn't bring a lot of tools.
Anyway, spark is good on all, it jumps to the valve cover from the plug boot. But I pulled the wires one by one and it does what is supposed to for 4-6, but barely perceptible if at all change when I pull 1-3.
Seems like it must be the front carb. I check the float needle, seems fine, double check the diaphragm (TR4A Strombergs) they are fine. When I put my hand over front carb at idle plenty of suction and it stumbles.
Car was running well, but I have been getting an occasional stumble for a while, minor and very intermittent, became constant very quickly this summer, I have been in the middle of a move/house renovation and haven't had much time to devote to the problem (so I tried throwing parts at it.)
Stumped.
I realized I hadn't replaced most anything since I got the car done 8 years ago. So I got a new cap, rotor, plug wires, and then a coil. No difference, I replaced the carb floats today still no difference, but tried some shadetree diagnostics because it is at my mom's house and I didn't bring a lot of tools.
Anyway, spark is good on all, it jumps to the valve cover from the plug boot. But I pulled the wires one by one and it does what is supposed to for 4-6, but barely perceptible if at all change when I pull 1-3.
Seems like it must be the front carb. I check the float needle, seems fine, double check the diaphragm (TR4A Strombergs) they are fine. When I put my hand over front carb at idle plenty of suction and it stumbles.
Car was running well, but I have been getting an occasional stumble for a while, minor and very intermittent, became constant very quickly this summer, I have been in the middle of a move/house renovation and haven't had much time to devote to the problem (so I tried throwing parts at it.)
Stumped.