Register free!
Search
 
     

The Green Industry's Resource Center


Click for Weather
Reply
 
Thread Tools Display Modes
  #1  
Old 03-11-2013, 08:42 AM
flipper61 flipper61 is offline
LawnSite Member
 
Join Date: Jul 2011
Location: New Port Richey, FL
Posts: 62
Kawasaki 34 H.P engine problems

I have a fx921 34 H.P Kawasaki engine that wants to run on one cylinder. If you pull the choke out about half way it runs better but not great. If I pull a plug wire off on one side it fires on the other so the coils are fine. It has a slight back fire through the carb. I did a compression check and get 120 and 90 on the other. The exmark dealer told me that 90 psi on one cylinder can be normal and that you can get a reading like this sometimes and that it is fine but I'm thinking he may be wrong as I have never had a good engine test that way. It doesn't smoke and I did remove the heads and have them checked and also replaced with new head gaskets and it runs the same. The carb is also clean and working properly. Any ideas as to what I should check or is it time to pull the 90 psi side out to see if i may have a ring problem as I suspect. Any input would be helpful.

Thanks!
Reply With Quote
  #2  
Old 03-11-2013, 10:34 AM
Exmark PR Exmark PR is offline
Sponsor
 
Join Date: May 2009
Location: Beatrice, Nebraska
Posts: 230
If you need additional assistance, you can contact Kawasaki Customer Service at 877-608-6088 or 949-460-5687/88.
Reply With Quote
  #3  
Old 03-11-2013, 11:33 AM
Valk's Avatar
Valk Valk is offline
LawnSite Silver Member
 
Join Date: Dec 2007
Location: Eastern KS
Posts: 2,721
Leak down test? Valves adjusted?
__________________
---------------------------------------------------
~ cut it high ~ let it fly ~
---------------------------------------------------
Some folks are so contrary that if they fell into a river,
they'd insist on floating upstream.
~ Josh Billings
Reply With Quote
  #4  
Old 03-11-2013, 12:12 PM
flipper61 flipper61 is offline
LawnSite Member
 
Join Date: Jul 2011
Location: New Port Richey, FL
Posts: 62
Quote:
Originally Posted by Valk View Post
Leak down test? Valves adjusted?
Valves are adjusted to specs and I have not done a leak down test.
Reply With Quote
  #5  
Old 03-11-2013, 12:22 PM
Landrus2's Avatar
Landrus2 Landrus2 is offline
LawnSite Platinum Member
 
Join Date: Dec 2006
Location: Big apple
Posts: 4,693
What's condition of spark plugs oily or dry.
Reply With Quote
  #6  
Old 03-11-2013, 12:44 PM
flipper61 flipper61 is offline
LawnSite Member
 
Join Date: Jul 2011
Location: New Port Richey, FL
Posts: 62
Quote:
Originally Posted by joesimoes2 View Post
What's condition of spark plugs oily or dry.
Not really wet from oil but kind of black I believe from to much gas when it only runs on one cylinder. At full RPM's it runs on both but misses slightly and as soon as you idle down it goes back to one cylinder. I think I better do a leak down test before I go any further.
Reply With Quote
  #7  
Old 03-11-2013, 01:12 PM
Landrus2's Avatar
Landrus2 Landrus2 is offline
LawnSite Platinum Member
 
Join Date: Dec 2006
Location: Big apple
Posts: 4,693
Have you checked you stator.
Reply With Quote
  #8  
Old 03-11-2013, 01:41 PM
flipper61 flipper61 is offline
LawnSite Member
 
Join Date: Jul 2011
Location: New Port Richey, FL
Posts: 62
Quote:
Originally Posted by joesimoes2 View Post
Have you checked you stator.
Yes! I have plenty of spark coming through both plugs and the stator checks out good. I even changed the coils to make sure they were fine.
Reply With Quote
  #9  
Old 03-11-2013, 02:11 PM
Landrus2's Avatar
Landrus2 Landrus2 is offline
LawnSite Platinum Member
 
Join Date: Dec 2006
Location: Big apple
Posts: 4,693
Have you checked your timing.
Reply With Quote
  #10  
Old 03-11-2013, 08:24 PM
flipper61 flipper61 is offline
LawnSite Member
 
Join Date: Jul 2011
Location: New Port Richey, FL
Posts: 62
Quote:
Originally Posted by joesimoes2 View Post
Have you checked your timing.
Do you mean checking the mark on the cam that lines up with the crank?
Reply With Quote
Reply

Thread Tools
Display Modes

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

Forum Jump





Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Moose River Media
All times are GMT -4. The time now is 11:15 AM.

Page generated in 0.07384 seconds with 7 queries