Welcome to the forum. First thing I would do is check the compression. If the compression is low enough it won't draw the fuel out of the carb. If compression is good then tear the carb apart and clean it up good, making sure all the jets and passages are open.
Carb not drawing fuel in, starts when manually pumped
If I just turn on and try to start my atv I just get electric starter motor sounds, no fuel is getting into the carb. If I pump the primer on the carb it'll start but when that fuel runs out it dies.
Any idea where I should look first to fix this?
Any idea where I should look first to fix this?
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Check the vent line on the gas cap. I stupidly fought for an hour 2 winters ago trying get the bike to go. Vent line was plugged with ice. as soon as I took the cap off it fired right up.
welcome to the forum !!!!
if you take the fuel line off the carb and turn the gas on (or to reserve ) does gas flow out the hose ? if not then pull the fuel tank and clean the screens in the tank atached to the fuel petcock ....
if you take the fuel line off the carb and turn the gas on (or to reserve ) does gas flow out the hose ? if not then pull the fuel tank and clean the screens in the tank atached to the fuel petcock ....
Mine is doing the exact same thing. No good answers yet. It ran perfectly until it suddenly stopped and refused to restart. Hard to believe the carb needs rebuilding when it ran flawlessly right up to that point. Compression is not the problem since it starts and runs good for the few seconds it has gas. I'm looking for a better answer like you are.
Checking compression and checking for fuel from the petcock to the carb are the easiest first steps. If you don't believe compression is an issue, like others have said, pull the fuel line off the carb and see if fuel is flowing. If not, there's a clog in the screens and you'll need to take the petcock off or disassemble and clean them out. If fuel flows from the hose, the float valve may be stuck shut. You could try to turn off the gas and take the float bowl off. Hold the float up and turn the gas on. Slowly lower the float and see if you get any fuel. If not, there's your problem. You'll need to take the carb off, disassemble and clean it. It might be difficult to get the bowl off with the carb still on the bike, though. Those screws tend to strip very easily. Might be worth taking the carb off anyway just to check.
It might not necessarily need to be rebuilt. As the carb gets gummed up, things can start to stick and need to be cleaned. Everything will work right up to the point when it doesn't. Never ceases to amaze me when people say things like "It was just working yesterday." Well, now it isn't. Fix it.Mine is doing the exact same thing. No good answers yet. It ran perfectly until it suddenly stopped and refused to restart. Hard to believe the carb needs rebuilding when it ran flawlessly right up to that point. Compression is not the problem since it starts and runs good for the few seconds it has gas. I'm looking for a better answer like you are.
It would not amaze you if you were paying attention. A carb that is clean and machine that is running flawlessly will generally exhibit signs of problems such as poor performance, backfiring, poor mileage, etc. For a machine to run perfectly and idling in the driveway - then abruptly stops is not indicative of a carb that suddenly needs cleaning. We are looking for another possible solution. Maybe the carb does need cleaning AND there is a separate issue. And maybe you didn't see the related conversation and is why you jumped to conclusions. Gas is making its way to the carb or else the plunger would have no affect. But yes gas is having a problem in-between the carb fuel inlet and somewhere before the plunger. We're looking for a solution to an otherwise clean carb that has this problem. There just might not be one other than removal and cleaning, but that is what we are asking. We wouldn't bother asking if we already knew the answer. This is how we learn if we weren't born a mechanic!!!
start with the basics first guys...it doesnt take but a second for trash to get caught up in the screen, lines, or jets...Rich and Toodeep have been doing this to long to make bad suggestions...
and kevdog, i understand your concern...but the plunger is sucking the fuel by manual suction but the lines may be clogged enough to not flow enough without that suction...only suggestions
Gotcha, sounds like a carb teardown is inevitable. I rebuilt it one year ago. Was hoping to avoid it so soon. I guess anything is possible that the screens are clean but dirt accumulated in those tiny jet orifices. Thanks.
Ethynol gas can be a pain. I only use pure gas in my foreman The BP stations around here all have pure premium gas.
Well it looks like the factory pressed seat is badly pitted and needs a brand new carb. Sound right? Any other ideas? Bike runs great put bleeds fuel out of the overflow.
does it bleed out when running ? or just when you have it shut down ?
ran 5 oz seafoam in tank continued starting with primer till it took effect then ran like newWell it looks like the factory pressed seat is badly pitted and needs a brand new carb. Sound right? Any other ideas? Bike runs great put bleeds fuel out of the overflow.
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