Question about 2005 kawasaki ZZR 250

1 Answer

Zzr 250 idling really low with full throttle and full choke. If I let the throttle off the bike dies

My bike had been sitting for a while after a crash. So I pulled apart the carby's and cleaned them completely, replaced air filter, oil and coolant. Placed almost full tank of fuel. Started the bike with the choke on full and the throttle full, but the idle is so low, the engine will chug along for a little bit but as soon as I release the throttle the bike will die. I've checked the spark plugs, they're ok. Tightened them back to speck. Same problem?? Any thoughts?

Posted by Anonymous on

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  • kawasaki Master
  • 48,657 Answers

Hi, Anonymous if your bike has been sitting idle for months or years and you did not do any pre-storage maintenance I feel your pain it will probably have a dead battery and not want to start or if it starts it will not idle unless the choke is full on and run poorly then stall, here are the following steps necessary to complete in order to get your bike back to an acceptable running condition and in the future pour in a bottle of fuel stabilizer and injector cleaner for you FI folks at least 2 times a year and before storage.
1. If your battery was 2-3 years old when you last had the bike running you should replace it.
2. If you believe your battery might still be serviceable remove it from the bike and put it on a 1 or 2 amp trickle charger for 24 hours. If it is the old lead acid type with visible cells and acid levels fill each cell to the top line with distilled water and replace the caps, run the vent tube into a plastic or styrofoam cup, any cells that are cloudy/milky replace the battery.
3. After charging remove the leads and let the battery sit for a couple of hours then check the battery voltage with a volt meter, you should have 12.5 volts or more, any readings in the 11 volt range you need to do a proper "LOAD" test on the battery and replace as necessary, you may have 12.5 volts or better but little or zero amps, any readings in the 10 volt range you have a dead cell and the battery needs to be replaced.
4. Drain and flush fuel tank if it rusty there is a cheap and easy fix. https://www.youtube.com/watch?v=fUYr_7SwGms
5. Remove and inspect your air cleaner paper elements that are not oil soaked can be cleaned with a soft brush and low pressure compressed air, oil soaked elements must be replaced. Gause mesh and foam elements can be cleaned by soaking them in a container big enough to completely cover them with a solution of 1 gallon of water and 1 oz. of Dawn dishwashing liquid for small and medium size elements, for monster size double the formula and let soak for at least one hour then rinse with warm water shake off excess and let air dry, "WARNING" do not use compressed air as this will embed micro-sized dirt and road grime and destroy the mesh pattern and stretch foam elements out of shape just squeeze it like a sponge and let air dry, use a fan if you're in a hurry. When completely dry spray a very fine mist of air filter oil evenly around the whole element.
6. Remove the carburetors, disassemble and decontaminate with a "CARB DIP" or if you have EFI remove injectors and clean with carb spray and compressed air
7. Check intake manifold and seals for leaks and cracks.
8. Remove fuel valve and filter disassemble and clean as necessary, remove, clean, and inspect fuel and vacuum lines and replace as necessary.
9. Replace spark plugs with new ones and check for spark.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
What RPM with full choke ninjette org
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Posted on Jun 10, 2017

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Posted on Jan 02, 2017

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  • 126 Answers

SOURCE: wont run /idle

i'd start with removing the carbs and giving them a thorough cleaning as when bikes sit for so long, the carbs begin to get gummy/varnished from the old gas.

check for blocked holes in the pilot jet & main jet and look for "hard & dried up" gas in passages. be careful of the float bowl gasket as to not tear it or you will need a replacement.

Posted on Mar 06, 2009

DoubleClutch
  • 376 Answers

SOURCE: 2000 Vulcan Nomad 1500 FI - Bike was sitting for 6

You need to remove the carbs and dismantle them completly and adjust them to spec. Also change the fuel filter.

Posted on Oct 28, 2009

wayneman01
  • 301 Answers

SOURCE: Keihin CVK-D36 carbs on a 20 yr old ZZR 600

It sounds like your bike has been sitting in storage for an extended period of time (a year or more) - and the carburetors are plugged up. If this is the case, they will need to be completely disassembled and cleaned out.
If it hasn't been sitting (and the carbs aren't plugged up) then check that all of the normal tune-up items have been performed, especially valve adjustment, oil and filters, spark plugs, etc. If this fails to produce positive results, perform a compression check on the engine. Each cylinder must be able to produce at least 140 psi of compression in order to run and idle properly.

Posted on Nov 07, 2009

  • 474 Answers

SOURCE: Kawasaki ZZR 250. Engine hydrauliced after fuel

sounds like you blew a set of piston rings. instead of building compression in the cylinder its pressurizing your crank case forceing the oil out the breather into your air box

Posted on Dec 19, 2009

suzukiracing
  • 200 Answers

SOURCE: Idling engine dies with even slight throttle twist.

Check float height in carbs.Thanks for asking and I hope this helps out.Please leave me 4 thumbs up.

Posted on Jul 20, 2010

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