Question about 1985 kawasaki ZL 900 A1 Eliminator

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Bike surges between 5 and 6 grand while cruising.

Bike surges between 5 and 6 grand while cruising. Does not surge under heavy acceleration . Bike is a 600 kawi zl. 1986

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It's surging because of irregular fuel supply. There are numerous circuits in a carb and x the no. of carbs. The first recommendation is to have the carbs aynchronized. Under heavy throttle a circuit other than cruising kicks in making up for the higher demand. You can sync them yourself with a manometer. They sell at the bike parts stores. Hook up four vacuum lines (supplied) and adjust the carbs to mach in all columns. good luck.

Posted on Aug 22, 2009

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Posted on Jan 02, 2017

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I have a 07 grizzly 700 4x4,when cruising at a steady speed you feel the bike surge,the faster you go the faster it surges,what could cause this?


Surging is usually at the throttles and idle air control motor. Cleaning them usually takes care of this problem. I haven't worked on bikes since the 80's. Surging back then was always dirty carbs. I am assuming that the new bikes are fuel injected and have an IAC motor.

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Bike surges at all speeds, not sure if its a fuel issus or a clutch issue


Surging is usually a fuel problem. To prove it, put the bike in one gear lower than the top gear. You didn't say what year or model bike you have. If it's a five speed, put the transmission in fourth gear. Do a full throttle roll-on acceleration with the transmission in that gear on a long uphill grade. If the engine RPM's climbs suddenly and drastically without the speed of the bike doing the same, it's a clutch slipping problem. More than likely, you are feeling the surge due to a lean fuel air mixture. This makes it very difficult to maintain a steady cruising speed in all gears.

Good Luck
Steve

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2002 Kawasaki ZX-12R surging


Hi, Renoagoodson and the usual suspects are:
1. Extremely lean fuel mixture.
2. Dirt, rust, water, or ethanol sludge in the fuel system.
3. Sticky throttle cables.
4. Multiple carburetors not in synchronization.
5. TPS sensor out of adjustment or faulty.
6. Wrong spark plugs for the type of service.
7. Throttle bodies not in synchronization (FI)
8. Faulty O2 sensor.
9. Clogged, stuck, or faulty IAC valve.
10. Aftermarket components not compatible with ECM.
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.
http://kawasakiworld.com/zx-12r/48093-little-surging-annnoying.html
http://www.zxforums.com/forums/zx-6r-forum/118889-2002-zx6r-surging-bogging-question.html
Kawasaki NINJA ZX 12R Service Manual
OEM Parts for Kawasaki
http://mybikemanuals.com/kawasaki

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Jul 26, 2011 | 2002 kawasaki ZX-12R

1 Answer

1980Fxb Sturgis harley runs good on accelerating but lurches when cruising at even speed ? I had to put FXDB because you do not have FXB in your list


When a bike "surges" when you're trying to cruise, it's usually because it's jetted too lean. Have you done anything with the carb? You may have a vacuum leak at the intake manifold. Check the tightness of your intake manifold clamps. The "rubber bands" in the intake clamps may need to be replaced.

However, on your Sturgis, you have dual belt drive, I think. I know the FXDG Disc Glide does. Whether you have single or dual belt drive, check the tension and condition of the belts. Do not get the primary drive belt too tight as it may break it. Check for missing lugs on the belts. If your bike does have a belt drive final drive, the transmission pulley for the final drive belt may be worn on the final drive gear.

Good luck
Steve

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Is this a good frist bike to learn how to ride?


hi,generally speaking yes,they have a very forgiving engine with gentle power delivery(no sudden surges of power like sports bikes)they are also very comfy to ride and yet even though it is only a 250 it will cruise quite comfortably at highway speed..enjoy..hope this helps

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want a great source for roadstar information? try roadstarclinic.com. you might have a sticking exhaust valve in the rear cylinder! they are known for it when they have the pipes and jet kits installed! if that be the case, I have a fix for it that is a lot cheaper than pulling the heads!

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