Question about 2003 Suzuki VZ 800 Marauder

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2001 marauder I cleaned the carbs & fuel tank. It still takes along time to warm up on choke. when it warmed up it still has a hesitation at half throttle. Plus when testriding & u twist the throttle u feel the clutch lever flex?

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Vz800 marauder hesitates when I Throttle

Posted on Jun 28, 2011

  • davidcandell
    davidcandell May 23, 2012

    turn the idle speed up its under the seat easy to access near the battery. hust take the seat off and turn it up and it wont hesitate

  • Greg Tigan Mar 02, 2013

    I had the same problem. After buying the bike from a guy who turned the idle down to make the bike sound more "marketable" (i.e like a Harley) the engine would cut out going into turns when I'd roll out of the throttle. Dealer put the idle and mixture back to spec. Idles a little high for my liking but it runs well.



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Motor will start but I have to manually hold the choke open until it warms up otherwise choke closes on its own

Yes this is the semi automated startup process. If the fuel is bad(old) or the carburetor has residue restricting the fuel passages the engine will run lean requiring some enrichment.(choke) I suspect that the engine may be hunting when warm. Use carburetor cleaner along with a fuel stabilizer.

Check/replace the fuel filter.

Empty fuel tank and purchase some no ethanol from home supply running the engine will assist in cleaning the passages. When engine is running close the choke a fuel times to give the engine a poor mans clean out, Avoid disassemble of the carb with out having technical compliance.(these are delicate and susceptible to contamination).

Never leave fuel in the engine when in storage. Ethanol gums up the fuel passages.

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You need to disassemble and properly clean the slow circuit/slow jets of your carburetors. Unfortunately, Your carb rack is very delicate. There are some brittle and expensive($40 each) crossover pipes that may crack or leak if the rack is removed for cleaning. I would try lowering my fuel level to just the lower tank and adding half of a cup of "Chevron Techron" to the gas (basically you want one gallon of gas with a shock treatment). Unplug the fuel line from the fuel pump and pour some Techron directly into the carbs. Now start the bike and run it long enough to make sure the treated fuel is in all the carbs. Turn off the bike and let it sit overnight. In the morning drain the carbs, restart the bike , and idle or slow drive till the carbs idle again( usually 5 to 15 minutes). If bike is starting to idle, drive to the gas station , fill the tank and drive the treatment through. With any luck this will solve your problem without an expensive disassembly/cleaning. Use "Chevron Techron", not Chevron fuel treatment with Techron, Techron is more concentrated.

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It seems the carb/s flooding with fuel and thus it dies, try to reset the float pin and get the correct level of the fuel in the float chamber.
Standard procedure for air-mixture screw setting is u take the screw right in slowly taking care not to over tighten it as it may damage the tip of the screw.
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My Sears riding mower chokes itself out after warmed up,

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Pop off the carb & take to your local small eng shop. Shouldnt cost to much..

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