They can be found but rather pricey, I just rebuild them.They available to put in?
They can be found but rather pricey, I just rebuild them.They available to put in?
Beat me to it. Was thinking the same.Leaking checkvalve assembly.
Yep that is what it was, feel bit of on idiot on that oneThat notch feeling is likely the magnet in flywheel passing by the ignition coil.
Was cleaned with carb cleaner, sadly don't have an air compressorOp, did you blow the carb out with compressed air or perhaps clean it with brakeparts cleaner or similar?
If it was a leaking check valve would it pressure/vac test ok?They can be found but rather pricey, I just rebuild them.
Yes, you are only checking the metering valve with a pressure and vac test, the idle and Wot circuits are wide open to the carb throat/venturi.If it was a leaking check valve would it pressure/vac test ok?
Carb cleaner destroy`s the coating on the tiny disc inside the check valve, I have rebuilt carbs that only had a fibrous disc left after the carb cleaner had dissolved the rubber like coating from the disc. Carb cleaner is too harsh for any rubber/ viton and soft diaphragm materials. Ultrasonic cleaning is best for any carbs with a high speed check nozzle.Was cleaned with carb cleaner, sadly don't have an air compressor
The needle valve tip looks like it is buggered up in your pic, it is not a very clear pic but the tip appears blunted and also I can see where someone attempted to remove the brass jet located in the bowl of the carb, the slot is distorted. Best bet would be to get a new carb as fixing the one you have may lead to requiring many parts and someone that knows carbs well to install and adjust the old one to make it function correctly.Ok here are the pictures: View attachment 1190658
I will check on prices, but think they are really expensive, the needle valve in the pic is the old one and had some form of coating on it that would break away, the tip seems to have gone off it, would prefer to try to rebuild, so I have to order a check valve and what else would you recommend?The needle valve tip looks like it is buggered up in your pic, it is not a very clear pic but the tip appears blunted and also I can see where someone attempted to remove the brass jet located in the bowl of the carb, the slot is distorted. Best bet would be to get a new carb as fixing the one you have may lead to requiring many parts and someone that knows carbs well to install and adjust the old one to make it function correctly.
Grab a Chinese carb for testing it’s cheap enough. Hipa is the only one I would buy from.I will check on prices, but think they are really expensive, the needle valve in the pic is the old one and had some form of coating on it that would break away, the tip seems to have gone off it, would prefer to try to rebuild, so I have to order a check valve and what else would you recommend?
Also would the wear on the cylinder and the wetness of everything be caused but running lean then over fueling?
Those OEM carbs that expensive?I will check on prices, but think they are really expensive, the needle valve in the pic is the old one and had some form of coating on it that would break away, the tip seems to have gone off it, would prefer to try to rebuild, so I have to order a check valve and what else would you recommend?
Also would the wear on the cylinder and the wetness of everything be caused but running lean then over fueling?
Does the new needle valve have the soft Viton tip on it? A new check valve would be a good choice but all the fuel passages should be cleaned out using jet drills to restore them to new condition, all Welsh plugs checked for leaking, they must be airtight, check that the L and H speed screws are tight fitting in their threads and that the tips are not damaged, post a good clear pic of those tips if you can. Many of the carb kits these days are not quite right as replacements for older carbs, the metering diaphragms do not always function the same as older carbs metering diaphragms did, the center button on the metal weight disc can be off in size and construction, just throwing a carb rebuild kit into a carb can render it useless. I have many carbs shipped to me for full rebuilds after previous owners installed a new kit and made the carb worse rather than better. If you decide to punch the high speed check valve out of the carb body remember to back the adjusting needles out, better to remove them than bend the tips. A rich running carb causes wet and blackened cylinders/pistons but that seldom causes wear of the cylinder, can cause carbon deposits on the piston crown and in the exhaust port. If that carbon breaks loose and jambs between the piston and cylinder that can cause carbon scoring marks, more so on the sides of the piston but usually does not score the hard plating on the cylinder walls. Running lean causes much more damage as less oil causes more friction that can melt the softer aluminum piston, that melted aluminum sticks to the cylinder all we call transfer.I will check on prices, but think they are really expensive, the needle valve in the pic is the old one and had some form of coating on it that would break away, the tip seems to have gone off it, would prefer to try to rebuild, so I have to order a check valve and what else would you recommend?
Also would the wear on the cylinder and the wetness of everything be caused but running lean then over fueling?
About $220 sadlyThose OEM carbs that expensive?
I think it must have had a Viton tip on it, the new kit was a normal one, If it matters I will order one and do the things you have posted then see where I am at with it.Does the new needle valve have the soft Viton tip on it? A new check valve would be a good choice but all the fuel passages should be cleaned out using jet drills to restore them to new condition, all Welsh plugs checked for leaking, they must be airtight, check that the L and H speed screws are tight fitting in their threads and that the tips are not damaged, post a good clear pic of those tips if you can. Many of the carb kits these days are not quite right as replacements for older carbs, the metering diaphragms do not always function the same as older carbs metering diaphragms did, the center button on the metal weight disc can be off in size and construction, just throwing a carb rebuild kit into a carb can render it useless. I have many carbs shipped to me for full rebuilds after previous owners installed a new kit and made the carb worse rather than better. If you decide to punch the high speed check valve out of the carb body remember to back the adjusting needles out, better to remove them than bend the tips. A rich running carb causes wet and blackened cylinders/pistons but that seldom causes wear of the cylinder, can cause carbon deposits on the piston crown and in the exhaust port. If that carbon breaks loose and jambs between the piston and cylinder that can cause carbon scoring marks, more so on the sides of the piston but usually does not score the hard plating on the cylinder walls. Running lean causes much more damage as less oil causes more friction that can melt the softer aluminum piston, that melted aluminum sticks to the cylinder all we call transfer.
Carb cleaner destroy`s the coating on the tiny disc inside the check valve, I have rebuilt carbs that only had a fibrous disc left after the carb cleaner had dissolved the rubber like coating from the disc. Carb cleaner is too harsh for any rubber/ viton and soft diaphragm materials. Ultrasonic cleaning is best for any carbs with a high speed check nozzle.
Just checked the can i used and it was easy start, always thought them and carb cleaner were the same thingStarting fluid can be used to flush the carb passages. Cans come with a nozzle/tube for the valve.
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