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I have a miller big 20. It wont start I blew the gas line out not clogged. Ill pour gas in to th manifold n sje will start. I think it is the carb but dont know what todo.

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  • guy dubeau Apr 07, 2015

    you will need to clean the carb there are lots of videos on you tube


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Check carb float

Posted on Apr 07, 2015

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Posted on Jan 02, 2017

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SOURCE: have a honda crf100f 4cycle got spark wont start,


Posted on Jan 29, 2010

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SOURCE: gas pouring out bottom of carb won't ping out

Hi and welcome to FixYa,

Gas pouring out is an overflow. The only reason there would be an overflow is when the float activated valve does not close the fuel inlet port. This could be caused by dirt, sand, rust or any foreign material. Fix would call for a carb pulldown, soaking non-rubber parts, and cleaning.

Good luck and thank you for asking FixYa.

Posted on Dec 29, 2009

  • 234 Answers

SOURCE: Gas pouring out of carb into air box

sounds like it take bottom of carb off and see if needle is stuck

Posted on Jul 29, 2009

  • 75 Answers

SOURCE: gas overflow line coming from carb is pouring out on a 2001 kaw

the carb needs to be cleaned the float is stuck open and is over filling
cheap and easy fix
good luck

Posted on Jul 08, 2009

  • 2336 Answers

SOURCE: Starting problem

my guess is that the choke being stuck completly closed and the ignition switch where the key go causing a short. thanks anyway

Posted on Nov 20, 2008

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1 Answer

I have a Miller Bobcat 225. It will not start and run with out pouring gas into the carb? I have changed fuel line and filter? Help!!! Please

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You need to rebuild the carb. The kits are cheap. Less than $10 for most. If that does not work possible carb replacement needed. Sometimes these carbs get clogged an cant be opened because orifice are to clogged. Carbs are not expensive. For $20- $25 it can be fixed.

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Engine will not start,almost sounds like it is backfireing out of the carburater ,I cleaned out the old gass and put new in, cleaned gas lines,blew out carb with air two times, it ran for about 10 seconds...

Pour a large amount of carb cleaner into the gas tank
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Your carb is dirty for sure.
The venturi and jets are so small on these carbs that they are easily clogged with gunk from old gas

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1 Answer

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If you have a compression gauge, check the compression. Anything under 90psi is too low.

Check your flywheel key. If it is broken the flywheel will move and not fire at the correct time.

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Remove your exhaust manifold. Look into the cylinder with a flash light. You are looking for scratches. Anything larger then a light fingernail is definite proof you need a new cylinder/piston assy.

If it passes that test do the following:

Pour mixed fuel straight into your cylinder until 1/4 full. Slowly pull your saw over while looking into the cylinder. If you see bubbles after the ring/rings go by then you need a new cylinder/piston assy. On rare occasions if no scratches are present on the cylinder wall or piston, you may be able to change just the rings.

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I have a 1981 Toyota 4WD with a 22r engine. Truck has been sitting up for about 8mos. I purchased it and got it home. The only way I can start if is by pouring gas in carb. I have replaced all vac lines...

check the fuel pump, maybe it is not working. if you put a new accelerator pump, I wonder if it's same as the fuel pump. if so, maybe you need to rebuild your carb, clean the small fuel line in the carb, something block there.

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