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Starts when choke or primed but will not stay running {has new pump]

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It sounds like the jet in the carburetor is clogged or there is an air leak not allowing a vacuum to **** the gas in to the intake. Depending on what engine you have, it may need a fuel system cleanout.

Posted on Sep 28, 2009


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Rebuilt carb. now have to have choke partially on in order for it to run what might be the problem?

could be the float level is too low or there is still a blockage ( corrosion ) in the idle circuit of the carby
discuss the problem with a service center for your make of motor as some kits for carby rebuilds are missing several small "o" rings vital for correct operation

Mar 31, 2016 | Boating

1 Answer

How do we start new chainsaw first time?

Install wire on spark plug. Turn switch to "on".Prime the gas with a 2-3 pumps, close the choke and give cord a pull. Don't pump the primer again or you can flood it out. Open the choke and pull cord until it starts.

Mar 16, 2015 | Garden

1 Answer

Hi my yamaha 25 6L2 outboard runs with choke on but when i go to put my choke in the engine will run for about 10 secounds then start bogging out it sound to me that the was no fuel getting to the car

are the fuel pump diaphrams hard ? valves sealing in the pump ? try priming the fuel while its running and see if stays running ! compressions over 100psi ?

Aug 14, 2014 | Motorcycles

1 Answer

I have twin 135 hp Yamaha outboard engines. Neither engine will start when cold.Putting small amount of gas into air intake and engine starts, engine starts fine when hot. Choke solenoid working

just like a car before the car start the fuel pump shoots gas in the carb or a lawnmower you gotta prime it all the gas that was in the carbs when you shut them motors off has done evaporated check your fuel cells see if there is a hand pump to prime the carbs unless its electric fuel pumps either way them carbs have to be primed

Dec 22, 2012 | Motorcycles

1 Answer

Cant get car to stay running has fuel delivery starts with chem start but wont stay running

replace the fuel pump relay
the priming switch operates fine if starts although after the priming switch does its job the fuel pump relay takes over

Sep 06, 2010 | 1992 Buick Regal

1 Answer

Mantis tiller starts but will not stay running

Carburetor problem. Two stroke engines use oil mixed with gas. Old fuel or setting over the winter will cause varnish and sludge in the Carburetor. Start by buying a can of carburetor cleaner and mixing a new can of fuel.
1) Dump the old fuel and check replace it with new.
2) Remove the air cleaner.
3) Pump the prime bulb 3 or 4 times, set the choke, spray the insides of the carb with the cleaner and then try and start it . It should sputter and run for a few second but chances are it will take a few sprays to clean the jets

Jun 06, 2010 | Mantis 2-Cycle Tiller

1 Answer

Bad /non starting

Wow!!If you live in alaska is diff. to florida.The usual in warm weather is;Choke/half on,1/4 throttle.2 pulls..Should start.Make sure before you do all this,the fuel bulb is totally primed.The motor is born to run at 50/1 fuel mix.If you changed the carby mixture,dont run the motor untill its set back to standard.It may do some damage.The oil is there to lube the pistons etc.the carb mixtures dont often need to be touched.Before you do spend dollars,try a different fuel lead that does prime up the fuel.Be it a friends or the local shop.They should help.Hope this may help

Sep 08, 2009 | Yamaha 12V Air Pump

2 Answers

Weedeater XT 85T wont run

Check to see if your feul line is cracked or it is drawing air . Check your clamps that hold the lines on . One other thing you can check is to see if any bolts are loose that hold the carb on . Best of luck Ed.

Jun 18, 2009 | Garden

2 Answers

Wont start

Try this sequence. Pump up the fuel bulb until it gets hard. There should be something equvilent to a fast idle setting, then hold in the primer(electric choke) and finally turn the key and crank. When it tries to start go easy on the electric choke. You may want to see if the electric choke moves freely.

Mar 23, 2009 | Light Outboard Motor Boat Bass Fishing...

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