2003 Suzuki GZ 250 Marauder will not idle

2003 Suzuki GZ 250 Marauder will not idle

Hi, Lynne you need to make sure you have no intake leaks by spraying some Brake Kleen, Contact Cleaner, Starting Fluid etc. around the intake manifold and seals, if the RPM’s go up or down significantly then you have a leak that needs to be fixed before you can continue with the carburetor adjustment.

The engine should be at operating temperature with the choke off to set the idle between 950 1050 rpm. Turn the idle skrew clockwise to increase the idle speed and counterclockwise to decrease the idle speed. If you have access to your air fuel mixture skrew you may turn it as well, if not there is a video below on how to gain access, make sure you start with clean or new spark plugs. Gently turn the air fuel mixture skrew clockwise until it starts to bottom out “STOP” do not over tighten as it will damage the taper on the end, now back the skrew out 1 1/2 full turns to establish a starting point start the engine and check the idle rpm’s and turn the idle skrew accordingly for 950 1050 rpm if necessary, custom fairings turn the air fuel mixture skrew 1/4 turn at a time and let the engine settle for about 10 seconds, turn the skrew clockwise for a leaner mixture and counterclockwise for a richer mixture, you are seeking the highest rpm your air fuel mixture skrew can acquire without going past 3 full turns from the bottom then resetting the idle skrew back down to 950 1050 rpm If you can not detect any rpm change and can not stall the engine by turning the air fuel mixture skrew all the way in then your pilot/low speed jet is too big and needs to be replaced with the next size smaller. Final adjustment should be made with a clean air filter mounted to the carburetor.

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.

Bike stalling when idle GZ 250 Forums

idle speed adjusment for motorcycle suzuki gz250Suzuki GZ250 Marauder Owner Manual

kvajifdar 2 Answers

SOURCE: i have a 2000 suzuki marauder vz800. the front

This is a common problem with vz800 models, I had the very same problem front ran lean and rear ran rich. I would advice you to do the following strong. change the frot jet to 130 rear to 135 and both needles should be 3rd from the top. screw out by 31/2 turns. hope this helps. motorcycle fairing kits PS: it is not your petcock, nor your fuel pump. One advice have you gas tank cleaned and line it with POR only it is a good product.

Posted on Aug 31, 2011

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