John Deere Ztrak running poorly


Old 09-12-10, 05:11 PM
Thread Starter
Join Date: Jul 2008
Location: Vermont
Posts: 10
John Deere Ztrak running poorly

My z727 seems unable to run at full power. Sounds hesitant and sluggish, even when the deck is not engaged. Exhaust is slightly black. Have changed the oil, replaced the fuel filter and the spark plugs, checked the fuel lines, gas cap vent etc, with no improvement. What's next?
Sponsored Links
Old 09-12-10, 06:17 PM
31YTech's Avatar
Join Date: Feb 2008
Location: EveryWhere
Posts: 1,263
Originally Posted by dbsteeth View Post
What's next?

Hello dbsteeth,

Engine model and spec numbers ?

If I had to guess, I'd say you have a Kawasaki on this machine.

If that's the case it sounds like it's only running on one cylinder, Check for spark at each plug by removing each plug wire one at a time while the engine is at idle speed. Use a pair of rubber handle pliers to remove them so you don't get shocked.

If you remove one and the engine dies the coil on the other side is likely faulty, You can confirm the faulty coil with the below test;

Good Luck
Old 10-09-10, 06:44 AM
Join Date: Oct 2010
Location: USA
Posts: 1
kawasaki engine

if it is a kawasaki engine, as most are... they are notorious for oil leaks, and i have several with oil blow caused from running low on oil. this can cause the plugs to foul out prematurely. if your plugs are black within a few min. i would say that is the cause. if so your options are to re-ring or to replace the engine

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes