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Primer bulb will not take in the fuel in it seems block

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A fuel system inspection is needed here. You need to check the intank fuel filter,(make sure its not clogged) the condition of the fuel lines,(soft, not brittle with no tears or cracks) ,the ventin the gas cap,(little rubber tube must allow air in). Foremost, check the condition of the bulb itself:sets in (primer base assembly) that has very small check valves inside it controlling the inflow and outflow of fuel. There cannot be any air leaks as the bulb on the carb and one mounted remotely from the carb depend on a vacuum effect to operate correctly. So some disassembly and acute inspection will be required.

Posted on Nov 08, 2010

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Posted on Jan 02, 2017

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2 Answers

Primer bulb not pumping fuel into carb, pull it out, no splits etc. Once I get fuel in it starts and runs fine??


Probably a valve in the priming system is stuck. It allows fuel to flow into the bulb from the tank, the valve should close then and allow the bulb pressure to spray into the carburetor. Could also be the opening into the carburetor from the prime bulb is blocked.

Mar 27, 2015 | Garden

1 Answer

I can't get it to start. Don't think the gas is moving when I pump it to start it. When I push on the bulb, it doesn't appear to pick up fuel.


Is the primer bulb filling with fuel.? If not then you either have a hole in the primer bulb or a hole in the fuel line, you mat also have a blocked primer bulb base.

Aug 03, 2013 | Garden

2 Answers

Primer bulb will not prime


Sounds like it could be a number of faults.
1. Crack in the primer bubble its self, not allowing the creation of pressure or vaccum.
2. The plastic primer base has a valve in it. That could either be blocked or damaged.
3. Blocked up fuel line (not very likely)
4. Hole in the fuel line which is sllowing it to suck air up and not fuel.
I\'d be putting my money on 1 or 2.

Jul 03, 2013 | Husqvarna Garden

1 Answer

Walbro WT891 carb on a Craftsman chainsaw. Carb is brand new, all fuel lines and fule filter replaced. I prime the carb with the little plunger, chainsaw starts up and runs out of fuel within 30 seconds....


Who connected these hoses? the normal routing for a machine with a primer is like this, the fuel hose from the tank with the filter on the end goes to the carb fuel inlet nozzel ( not to the primer ) nearest to the pump cover ( cover on carb held with one screw ) the pipe from the metering side of the carb connects to the shorter nozzel on the primer bulb ( suction side ), the longer nozzel on the primer ( pressure side ) connects to the pipe going back to the tank, just remember the primer pulls fuel from the carb,into the bulb, and pushes it back into the tank, it is not actually a primer it is a purge. because it is connected this way it is impossible to flood the engine no matter how many times the bulb is pressed.
Let me know if it starts and runs.

Jan 31, 2011 | Poulan Garden

2 Answers

My chain saw 14" homelite


primers pull fuel from the carb and dumps it back into the tank, so if the bulb will not prime the chances are the fuel filter in the tank is blocked, pull the fuel hose through the filer hole and replace the filter on the end.

Jan 27, 2011 | Garden

1 Answer

Poulan 2150 gas chain saw. How do I connect new primer bulb to carb and gas tank?


Make sure the tank is filled with fresh fuel mix.Try hooking the line that goes to the tank to one of the two primer ports and operate the bulb. If it does not pull fuel in, reverse the connection to the primer and try the bulb again. Once you get fuel into the bulb, move the tank line to the other port. Install a line from the open port on the primer to the open port on the carburetor. Try the primer bulb again, it should pull new fuel from the carburetor if the two connections at the carburetor have not been reversed. This is a kind of 'hit or miss' business when connecting fuel lines that involve the primer bulb. Nothing seems to be marked on the involved parts. Hope this helps

May 15, 2010 | Garden

1 Answer

Must keep pushing primer bulb to keep mower running, need manual


The main suction jet in your carb. is blocked.Remove the bowl and push a thin needle up the centre jet in the carb and blow the jet out with compressed air. Stephen.

Sep 22, 2009 | Briggs & Stratton Garden

2 Answers

McCulloch Chainsaw carb not getting fuel


This is the same problem I have with a Mac 3200. I have: (1) A line from the primer bulb to the front port on the carburator. (2) line from fuel tank, with attached fuel filter, to the other primer bulb port. (3) Line from port on back of carb. to ????. I thought it must be a pulse line, but not certain, and don't know where to run it to. Please let me know when you find out.

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2 Answers

Leaf blower will not continue running unless primer bulb is pushed intermittently


Hi

Priming the engine(put some gas in the sparkplug hole)..If.Start the engine.If only the gas from the cilinder is burned change the lines prom primer bulb.

best regards savumihai71

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4 Answers

Ryobi 725r 31cc


Ryobi is Japanese for "Piece of ****" My suggestion is to throw it out!
My 767r has had fuel line and carb trouble from day one. I'll never buy another Ryobi or Craftsman tool again.

Jun 13, 2008 | Ryobi 15" Electric Factory Reconditioned...

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