I have a tecumseh hm80 155481n engine I just put on an entire new carbon rebuild kit. I tried starting after I installed and nothing. I pour gas in the carb and it starts then stops when there is no more gas. I opened up the bowl nut with the gas line installed and no gas comes out of where the nut would have been. I have sprayed it with carb cleaner when I rebuilt it. How do I get gas to come out of where the carb nut would have been with the gas line installed?
Should I just get more carb cleaner and just spray the heck out of the inlet barb pipe where the gas tank line connects to the carb? The emulsion tube on this is metal and doesn't come out. Is there something maybe in that that is not drawing the fuel up into the body of the carb? Is there something else that would prevent gas coming into the carb to get into the bowl?
Here is what I used. I also replaced the float and bowl. When I got this chipper (it was free) I opened up the carb and it had sticky goo all over the bowl. The throttle "butterfly" was completely stuck and I sprayed with cleaner and after a while it started to rotate. Should I just keep spraying it with cleaner in the intake and emulsion tube? Could it still just be gummed up inside? Is there a hole in there that I can stick a piece of metal through to help clean it out or just let carb cleaner sit in there?
Make sure fuel is flowing from the tank to the carb first. If fuel is coming out of the fuel line, then take the carb back off and make sure the float isn't stuck, preventing fuel from filling the bowl. After removing the carb and bowl, make sure the float moves up and down freely. Also turn the carb upside down to see if the float needs adjusted. Basically it should be parallel with the body of the carb, not pointing at an angle...
L8R,
Matt
#4
detdrbuzzard
check the level of the float
#5
AnthemBassMan
Here's a pic to compare yours with. Also make sure the rubber needle seat is all the down where the needle valve sits.
I know fuel flows out of the line. I know the needle moves freely. I will check the float alignment when I get home later. If it is upside down and it is not horizontal but pointing up or down how does it prevent fuel from entering the bowl. I know if it is in its state on the engine it would be pulled down by gravity and allowing fuel into the bowl right? If I install the spring will this help with the float? When I first diss-assembled the carb I did not see a spring but that does not mean someone else removed it before I got this. Also if the float is not level how would I go about making it level. I know the needle seat is down all the way I pushed it in with the backside of a drill bit till i could not push any more.
I just dont know about the float level and want to get all the info before I tackle it if that is not level (can't remember.)
If the picture is flipped top to bottom like when on the engine, which position would allow gas into the bowl? Horizontal or angled down?
I have a walbro wt series carb I'm rebuilding I believe the screen under the welch plug or the inlet is clogged I'm not sure how to get the snap ring out any ideas.
I checked the float, it was actually angling down in reference to the picture above. I got it to stay horizontal like the picture. Checked the hole where the needle goes looked clean and unclogged. Should I spray with carb cleaner is there another part that could be the issue? I still do not have gas flowing out. I left the carb attached to the engine and fuel line, took the bowl off and nothing. I moved the float up and down nothing changed.
#10
AnthemBassMan
If you've done all that, about the only thing left is a major plug at the fuel inlet where the fuel line attaches to the carb. Get a piece of solid copper wire, or even a straightened out paper clip, and see if there is something plugging the inlet. Some digging with the wire, followed by some shots of carb cleaner in the inlet and every other office you can find, should get you back on track. I've never had one that dirty or plugged, but anything is possible...
L8R,
Matt
#11
AnthemBassMan
Alternate shots of carb cleaner between the inlet and the the needle valve port. Spraying from both ends like that should flush the blockage out...
I tried that but there was nothing there. I got it running. The issue was the idle mixture screws. I had them setup to what they were when I got it. I needed to spin both to get it to keep running. Well hope this helps someone else if they have the same issue. Try the mixture screws before you try something else. Thanks for all the help.
This is a Murray with a 4hp Tecumseh. model number rubbed off.
Ok, so a lopsided float will cause the carb to not get fuel? Why? How can I get it level? When I was installing the carb kit I noticed the needle DID NOT have a seat, should I have put one in? No, I triple checked, with a hole punch, all over the port just felt like metal! The primer bulb seems like it's in good shape, no holes, not dry or thin, no cracks but when I push it in I can't tell if it's doing anything. Yes, I "went over it with a fine toothed comb", in cleaning the carb, twice. I sealed it with gasket maker and made sure that I have a really tight seal between the parts, no leaks! Is there anything else at all that could cause the carb to not be getting gas? The gas is fresh, the gas line is new, and the tank and filter is clean and gas flows freely.
