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Aug 2nd 2021, 03:34 PM   #1
 holypiston's Avatar
 
  Jan 2016
  Battle Ground, WA

  2003 Z1000
03 Z1000 die/lean? problem over bumps

The bike will feel like a two stroke gone flat or lean or dies? when you hit a bump. If i give it some quick blips, it will start again, but something must be loose? I did have the tank off to clean the paper air filter of debris recently and wonder if i screwed something up when i put the tank back on.

Pretty unnerving to say the least.

Any ideas on what could be wrong?

I'm guessing that pesky fuel connection...I don't even know if i routed it right.
Aug 2nd 2021, 05:55 PM   #2
 MarvTravis's Avatar
 
  Jan 2016
  Kirkland, WA

  Kawasaki ZX-14
On my ZX-14, I had a problem with the engine suddenly cutting out, as though it was an electrical problem. I'd give it a little throttle, and it would fall on its face. Determined it was due to the in-tank mesh fuel strainer that's integral to the fuel pump. The strainer was severely clogged. Removed the tank, then the fuel pump with its fuel strainer, and installed a fresh mesh fuel strainer. This resolved the problem immediately. Several years later, the bike exhibited the same symptom, and I went straight to the fuel strainer, and replaced it. Problem resolved!

Apparently the strainer was sufficiently clogged that, when there was a demand for additional fuel, there was insufficient flow, and the bike would falter. The ZX-14 is fuel-injected, so your bike may respond differently to fuel starvation. If you had the tank off, you may have stirred up debris from the bottom of the tank where the fuel strainer resides at the bottom of the fuel pump. Going over a bump would probably stir up debris in the bottom of the tank as well.

Although this may not be the cause of your problem, do consider that it may be the culprit.
lagwagonlead likes this.

Edited by MarvTravis on Aug 2nd 2021 at 06:18 PM
Aug 3rd 2021, 01:42 PM   #3
 
  May 2016
  PDX

  2016 ZX-10R; 2021 Z H2 SE
Do you have an electric fuel pump on that bike? I'd imagine a loose connector might behave that way.

I'm guessing a Z1000 has coil on spark, but is there a chance that your ignition box has a loose connector?

I'd also check a chassis ground/battery connection. Those might be less suspect, though.
Aug 3rd 2021, 06:01 PM   #4
 
  Jun 2021
  Vancouver

  06 FZ1S, 07 DRZ400SM, 07 TTR230
Might double check for possible fuel line kinks (if there's any lines hidden under the tank) or pinched wires. Check your coils too. You've got a lot of miles on that sucker, so it could be a few things! Good suggestion in that fuel strainer as mentioned above, worth checking out!
Aug 3rd 2021, 06:01 PM   #5
 holypiston's Avatar
 
  Jan 2016
  Battle Ground, WA

  2003 Z1000
Thanks Marv for the tip. Fuel pump is over $400 new. oh joy.

Syringe, I was leaning towards a loose snap fuel line myself. I checked and the line was correctly installed pointing forward and curving back like it should.

I think I may have found the problem: Years ago I "pinched" one of the kickstand sensor wires...it hangs relatively loosely. That wire was SHREDDED and hanging by threads. I think the "bumps" I hit over the years made it wear and caused it to short out intermittently and then reconnect on smoother roads. I had a cheap auto style barrel connector and wire stripped to good wire (both ends) and tested w/ multi-meter...works as it should.

I will test ride the bike later....i also checked the (2) electrical connections to tank and I have these really COOL (cheap) terminal remover tools that allow me to remove the crimped terminals from inside their housings and i snugged those down a little tighter just in case for a solid connection there.

JLev: It's all good. didn't screw up the orientation and the line is not kinked. Surprised that i didn't screw that up. Bitch to install the tank full w/ fuel.

Man, it better not be that fuel pump. 400+ bucks...day-am@!!!!

Edited by holypiston on Aug 3rd 2021 at 06:04 PM Reason: motos ain't cheap
Aug 4th 2021, 03:59 AM   #6
 ZXtasy's Avatar
 
  Jan 2016
  Moses Lake, WA

  2013 Kawasaki Concours C-14, 2005 ZX-10R Kawasaki (Nekkid), '99 Yamaha TW-200
hp, just remember you can get new, higher performance fuel pumps, regulators, filters for a fraction of factory price at https://www.highflowfuel.com/catalog/fuel-pumps/
Flyboymedic and Akdawg like this.
Aug 4th 2021, 05:20 AM   #7
 Flyboymedic's Avatar
 
  Jan 2016
  Hazel Dell, Wa

  Multistrada Pikes Peak, VFR800, VStrom 650, TE 610
Yup, Quantum fuel pumps are quality pumps and can also be found on ebay.
Aug 4th 2021, 06:23 AM   #8
 holypiston's Avatar
 
  Jan 2016
  Battle Ground, WA

  2003 Z1000
Quote:
Originally Posted by ZXtasy
hp, just remember you can get new, higher performance fuel pumps, regulators, filters for a fraction of factory price at https://www.highflowfuel.com/catalog/fuel-pumps/
U the man. Pinned in my favorites.

UPDATE: I took the Z1 on a bumpy stretch of road last night and some speed bumps. Looks like the crimp fix is working so far. No symptoms/hiccups.

Looking forward to a pump rebuild soon though, thanks again!....
JLev likes this.
Aug 4th 2021, 11:19 AM   #9
 
  May 2016
  PDX

  2016 ZX-10R; 2021 Z H2 SE
Good fix!
Aug 4th 2021, 06:36 PM   #10
 holypiston's Avatar
 
  Jan 2016
  Battle Ground, WA

  2003 Z1000
UPDATE: Looks like Marv is probably on the money.

Took a longer ride and hit some better bumps at normal speed. Definitely stumbling. Bike is running hotter and feels leaner, got up to 224 and this bike is not a race bike...runs on 87 american octane. I think the pump is slowly failing like my stator did on the 400.

Looks like a pump kit in the near future.

Edited by holypiston on Aug 4th 2021 at 06:38 PM
Aug 5th 2021, 04:33 AM   #11
 ZXtasy's Avatar
 
  Jan 2016
  Moses Lake, WA

  2013 Kawasaki Concours C-14, 2005 ZX-10R Kawasaki (Nekkid), '99 Yamaha TW-200
Sounds like more work ahead, but should be well worth it as those engines are pretty sweet. Did it sit unloved/unridden for long stints? Anyway, check for loose connectors at the fuel rail/airbox transition. Also probably be a good idea to go deep enough to pull the spark plugs for a change. Will give you a good chance to read the ones there. They are probably fine tip electrodes and on my ZX9 were more sensitive to slight fouling. At 10 bucks a pop and hard to get too not fun, but may help. Keep us posted and lets see the bike!
Aug 5th 2021, 05:18 AM   #12
 Flyboymedic's Avatar
 
  Jan 2016
  Hazel Dell, Wa

  Multistrada Pikes Peak, VFR800, VStrom 650, TE 610
Quote:
Originally Posted by holypiston
Bike is running hotter and feels leaner, got up to 224 and this bike is not a race bike...runs on 87 american octane.
224 on 87 pump gas? Impressive! Especially for a Z1000! KPH???
Aug 5th 2021, 11:50 AM   #13
 MarvTravis's Avatar
 
  Jan 2016
  Kirkland, WA

  Kawasaki ZX-14
If you do find that your problems are due to a clogged fuel strainer integral to the fuel pump, you need to replace ONLY the strainer, NOT the fuel pump. It's a relatively-easy task. After you remove the fuel pump, you separate it from its housing to gain access to the replaceable strainer.

On the ZX-14, there are two possible fuel pumps installed. They are not interchangeable, and the strainers are not interchangeable. I have on the shelf, a new fuel pump of each type, and new strainers of each type. Shoot me a PM with your email address, and I'll send you photos.
Mudslinger likes this.

Edited by MarvTravis on Aug 5th 2021 at 12:07 PM
Aug 5th 2021, 03:30 PM   #14
 holypiston's Avatar
 
  Jan 2016
  Battle Ground, WA

  2003 Z1000
Quote:
Originally Posted by Flyboymedic
224 on 87 pump gas? Impressive! Especially for a Z1000! KPH???
I had a guy w/ an old stock suzuki katana say his bike hit 200 MPH.

And I drag knees all day long. Have to buy pucks almost every month. I have to restrain myself.
Flyboymedic likes this.
Aug 5th 2021, 03:33 PM   #15
 holypiston's Avatar
 
  Jan 2016
  Battle Ground, WA

  2003 Z1000
Quote:
Originally Posted by MarvTravis

On the ZX-14, there are two possible fuel pumps installed. I have on the shelf, a new fuel pump of each type, and new strainers of each type. Shoot me a PM with your email address, and I'll send you photos.
Hi Marv,

Are you saying the ZX-14 pump might work on the Z1000? I'll be on a short 5 day vacation starting tommorrow, so forgive me if I don't reply to anything in the next couple of days.

Will e-mail. Wonder if the pumps are similar?
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