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When I start my rtv 500 it runs like the choke is on all the time. As soon as you hit accelerator it chokes like its struggling to get fuel. It does this all the time even when warm. Any ideas?

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  • Contributor
  • 13 Answers

You may check the manifold between the carburetor and cylinder head for leaks. You could be losing the vacuum it takes to run properly at extended load and rpms.

Posted on Mar 16, 2019

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: It starts fine and runs on choke but not off choke

It sounds like you are not getting enough gas. I think it's the diaphragm, When you take it off of the choke diaphragm controls the gas flow, apparently yours is just shutting down. It's very inexpensive, and very easy to replace. Good Luck :)

Posted on Feb 23, 2009

wd4ity
  • 4565 Answers

SOURCE: My sportster will only stay running when choke is fully engaged.

Your carb is running either extremely lean or extremely rich. Either you have a serious vacuum leak or excess fuel is finding it's way into the carb. If the bike has been sitting for a long period of time (more than about 3 months), you're jets in the carb may be clogged.

You remove the carb, disassemble it, and clean everything inside with particular attention to the slow speed jet and the main jet. This best left to someone with the proper skill level to do the job. However, it can be done by an advanced amateur.

I would also replace the intake gaskets while I had it down this far. Replace the gaskets where the intake connects to the cylinder head. The intake flanges are marked "F"ront and "R"ear. Install the new gaskets and loosely install the bolts. Once the carb is completed, install the carb seal on the intake and install the carb and bolt up the backing plate to the carb and the heads. This will align the intake. With the carb and air filter backing plate in place and tight, tighten the bolts that hold the intake to the heads. Reconnect the throttle cables (may require removal of the air filter backing plate) and make sure the throttle works correctly.

Regrettfully, this is one job that I strongly recommend a service manual. You know the saying "a picture is worth a thousand words". It certainly holds true in this case especially if you're going to tackle the carb yourself.

If I can be of further help, drop me a line directly at wd4ity@bellsouth.net Good Luck!

Posted on Feb 15, 2010

  • 5 Answers

SOURCE: tb320bv blower, I can set the choke and start it

This would indicate that you need a new diaphram in the carby not very expensive any mower shop will do for about $30

Posted on Jun 25, 2010

  • 3567 Answers

SOURCE: will only start and run with choke on. have to

The pilot jet circuit is plugged up. Clean the carb. Remove the vacuum valve and keep it away from any spray. Remove the choke, air and throttle screws then spray into every hole you can find. The spray should go in one hole and come out another hole. Pay special attention to the jets. Important > count the number of turns inward to lightly seat the throttle and air screws. This is the number of turns you will need to open the screws after lightly seating them during re-assembly. Please rate my answer. Thanks.

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Posted on Aug 12, 2010

Testimonial: "Thanks for the troubleshooting! I wasn't sure where to begin a fix (valve timing or carb. cleaning). Thanks for the cleaning advice. "

  • 6468 Answers

SOURCE: briggs &stratton 550 auto choke problems

clean out the carb

Posted on Apr 11, 2012

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Hi, Anonymous and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
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http://service.tanga-moteurs.ro/data/Kawasaki_EX500-GPZ500S_1987-1993-ServiceManual_%28EN%29.pdf
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Hi, S and the usual suspects are:
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4. Vacuum line from the petcock to intake manifold cracked.
5. Float needle and seat sticking.
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8. Idle adjusting screw set too low.
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10. Idle port, transfer ports, slow air jet clogged.
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For more information about your issue and valuable "Free" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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Carburated vehicles ether have an automatic choke, or the very old ones, a hand choke. Yours has an automatic choke. The starting problem likely is a problem with the choke. The problem is almost certainly not the fuel pump.To set the automatic choke, push the accelerator to the floor, and RELEASE. Then start the engine just like you would a fuel injected vehicle. If this doesn't solve the problem, then the automatic choke needs to be repaired.

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A good carburettor cleanout and new carb overhaul kit wont hurt either.

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