Return to the Tractors Forum | Post a Follow-Up

 o
Kohler 22.5 hHP model CV22

Posted by donholtz none (My Page) on
Sun, Apr 1, 12 at 22:11

Mice got into my Craftsman/Kohler Command engine over the winter, not sure if this is what caused my problem. Anyone help me determine why gas is not getting from Fuel Filter to Carberator? Replaced fuel filter, that's not the problem. The part called Pump Fuel Pulse, is an odd little component that I don't understand.. It's self contained and has an input hose from the fuel filter and another input from the engine. The output goes to Carb. Im wondering if the 2nd input hose from the engine, which may be to produce a vacum, is dirty or clogged from the mice? I can start the engine with squirts of starter fluid, but it does not continue to run, becuase no gas is getting feed into Carb.


Follow-Up Postings:

 o
RE: Kohler 22.5 hHP model CV22

Call it a Pulse fuel pump and it'll probably make more sense.

Crankcase "pulses" from the pistons going back & forth cause "pulses" that move a diaphragm back & forth in the fuel pump.
The "input" hose is from the tank and the "output" is to the fuel filter/carb.

The hose from the crankcase is the pulse hose.

I doubt if mice caused a problem there unless they ate through one of the hoses.
IF the pulse hose is old & cracked, it can leak and not deliver a strong enough vacuum/pressure pulse to the pump.
Hole in fuel line to the tank can suck air instead of fuel.

OR maybe you simply need a new fuel pump?


 o
RE: Kohler 22.5 hHP model CV22

I've got an issue with my Kohler CV22 also. Just replaced fuel filter, oil and oil filter, air filter, spark plugs. Forgot to change/remove gas last fall. Now it will turn over okay but will not "fire". Thought it might be the backfire solenoid, but took that out and it works fine. Also cleaned and checked the carb and it is okay. Ideas?


 o
RE: Kohler 22.5 hHP model CV22

Disregard my post above, got the problem solved. Turned out to be a cracked/split pressure hose to the fuel pump. Replaced and now everything is okay.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Tractors Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here