Question about HMF Exhaust Yamaha Grizzly 700 07-10

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Engine runs on choke but dies when unchoked

Engine starts easly in choke ,idles,but when accelerated or unchoked it dies

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It will crank and idle while choked but dies when unchoked


Could be a leaking inlet manifold, blocked jets or low float height in carb.

Oct 11, 2015 | ATVs

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Cold choke baffle has 3/16 opening minute I pump accelerator choke thermostat closes primary baffle shut no air to start I force choke open to start why insufficient air to run at high idle?


Your engine probably has an automatic choke device that adjusts automatically with engine temperature. To set the choke when the engine is cold you have to depress the accelerator to the floor and release it completely. You shouldn't have to depress the accelerator again to start the engine, turn the key the engine should start. As the engine begins to warm up it will also begin to initially run faster then it will start to run rough. At this point you have to press the accelerator and release it again. The auto choke mechanism should allow the choke butterfly to open. There may be a number of stops in the system and the choke butterfly will stop again still not fully open and only become fully open when the engine is at operating temperature. Hope this answers you question, Rgs. Bob

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Why do I need to pump the gas pedal to get the 83 prelude started


Choke is not functioning. Take air filter off and try using some choke cleaner on all the components.

Jul 05, 2013 | 1983 Honda Prelude

1 Answer

Fc420v


remove the main jet in the carby and clean out as it has gunk in it preventing the fuel to pass up to the venturi

Jun 16, 2013 | Garden

1 Answer

May mac 110 starts then it stops. I choke it it fires then i unchoke it and it starts and stops running.


Try backing the choke off about 1/2 way after it pops, and allow it to run for a few moments on that setting. Once the engine warms up, you can back the choke off completely. My Mac mini has no primer bulb, which means using the choke in a similar manner. Don't forget to set the 'fast idle' button on the throttle before starting (blipping the throttle will release the fast idle button). Hope this helps!

Sep 09, 2010 | McCulloch 16 Inch Gas Chain Saw MCC1635AK

1 Answer

Engine stalls after acceleration - Start fine, idles fine, but won't run at full speed. Engine dies when throttle is engaged more than half-way. Fuel filter is ok, air filter has been cleaned.


Sounds like its not "un-choking" it self, that its running like its still choked like you wold at initial start up.

Disassemble it and see if u can pysically see the activation and deactivation of the choke when u apply them.

While u are at it, also make sure:

Gas is fresh?

MIx is right?

Plug is good?

Chain brake mechanism is released.?

Good luck.

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1 Answer

1993 oldsmobile cutlass supreme engine stalls choking


soundl like idle air control valve sensor
try a clean .............if no better replace

Apr 30, 2017 | 1993 Oldsmobile Cutlass Supreme

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