Question about kawasaki ZZR 600 Motorcycles

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Flat spots when accelerating.

My ZZR600 1994 was miss firing so changed the plugs, air and fuel filters. Now ticks over and sounds a lot better (a little hesitation at idle) but now when accelerating about 30mph experiencing flat spots, surges and at times no acceleration which wasn't happening before. This is my winter hack so want to avoid any unnecessary costs so before I book it into a mechanic, any ideas? Cheers

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 183 Answers

SOURCE: hesitation in the acceleration ,and occasional miss in idle ,park & drive

Check the resistance of the coil for number 4 cylinder....Also check compression...

Posted on Sep 19, 2008

  • 5 Answers

SOURCE: surging while driving

This is a notorious problem with the Windstars. There are oodles of ground straps in them. Make sure they are all clean and tight. ESPECIALLY THE STARTER GROUND STRAP. If it's loose, the car may just die when you turn up into a driveway or parking lot or just go over a bump. If you notice the "Check Engine" light comes on momentarily, at the time of the surge or the engine kills completely, it's DEFINITELY the starter ground strap! My engine used to kill at odd times -- even when on the freeway going at 75!-- Then we'd go over another bump and SURGE_O_RAMA, the engine's running again or I'd restart it and it would be fine for a while. What's happening is the loose ground strap loses it's connection when you go over a bump in the road. The next bump jogs it back into the connected mode, albeit tenuous at best. All of the computer techs couldn't find the problem. It took a 70-year old seat-of-the-pants mechanic to make the SIMPLE fix. It took so long to find the common-sense mechanic, however, that the down-shot of all of the surging tanked my tranny, which I had to have rebuilt! AND then, after I drove away from the 5-star AAA BBB "transmissing" shop, I found that THEY HAD NOT TIGHTENED ALL OF THE GROUND STRAPS! I took it back. They had no knowledge of ALL 9(?) ground straps and had to take it to THEIR mechanic who tightened them ALL down! It's been 5 years since then and I haven't had another problem with it. RULE OF THUMB: EVERY TIME YOU HAVE THE VAN SERVICED have them tighten-down ALL of the ground straps! If your mechanic doesn't know what you are talking about, go find a new mechanic. Generally, the AAA "Top Shops" are your best bet. They fix things right the FIRST time. I still haven't found a manual that has all of the ground straps listed, by the way.

Posted on Oct 09, 2008

pakis
  • 86 Answers

SOURCE: NOISY FUEL PUMP ON 650 YAMAHA VSTAR (2002)

your fuel pump suppose to Hum and gently vibrate only when working normally, clacking sound would only mean that it is having a hard time or inconsistently supplying gasoline into your engine. Have it checked and see if any improvement would happen.

Posted on Nov 25, 2008

  • 1 Answer

SOURCE: have flat spot when just have foot on accelerator

check for dirty EGR valve or faulty O2 sensor.

Posted on Jan 27, 2009

localwonder
  • 6784 Answers

SOURCE: Hesitation and Rough Idle

Hi, you stated that the original fuel pump is still installed. I would replace this pump as soon as possible. this may be the key issue. You can check the voltage on this part by using a voltage meter. you should get 14 volts here. if its less than 14, it will run weak , in return, preventing proper fuel flow. I would also check the injection system to see if its running properly as well.


please rate and god bless.

Posted on Mar 19, 2009

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