Kohler Command V-twin. Cranks but no-start.

[firhill]

I have a mid-90's Woods 6200 zero turn that has run fine since I bought it three years ago.
After sitting all winter, it refused to start this spring. I have pretty much run out of ideas as to what to check/replace next.
Symptoms haven't changed from when I started troubleshooting and replacing parts two months ago,.
That is, it will only stay running if I continually spray gas into the carb.
I installed a new carburetor, fuel pump, fuel filter and new fuel lines, including the hose from crankcase to fuel pump.
I primed the pump/filter/lines full of gas all the way to the carb but engine stalls out as it's not drawing fuel from tank.
I removed the fuel pickup from gas tank and tried drawing gas from a bottle while spraying gas into carb to keep motor running and the fuel pump won't suck any gas from bottle either.
I have tightened oil filter and oil fill cap to make sure vacuum/pressure from crankcase (if there) is preserved,
as it appears that maybe none is being created to suck fuel from tank and send it to the carb.
It seems the last thing to check would be to compression test the line from crankcase to fuel pump
but could that even be the issue if the motor runs fine when i feed it gas manually?

Engine is a Kohler Command V-twin with a Keihin 24 053 32 carburetor.

Any suggestions as to my next step would be much appreciated.

Thanks

 

[ILENGINE]

If you disconnect the fuel line between the carb and fuel pump and crank the engine does the fuel pump, pump fuel into a jar or other container. And does the fuel solenoid on the carb click when the key is turned on and off.

 

[firhill]

If you disconnect the fuel line between the carb and fuel pump and crank the engine does the fuel pump, pump fuel into a jar or other container. And does the fuel solenoid on the carb click when the key is turned on and off.

No, not getting any fuel from pump when cranking.
I don't hear any clicking and I'm not sure where the fuel solenoid is on the carb. Is that controlled by the electrical wire that I disconnected/reconnected when replacing the carb?
Should I be checking a fuse somewhere since I'm not hearing any click?

Thanks

 

[ILENGINE]

No, not getting any fuel from pump when cranking.
I don't hear any clicking and I'm not sure where the fuel solenoid is on the carb. Is that controlled by the electrical wire that I disconnected/reconnected when replacing the carb?
Should I be checking a fuse somewhere since I'm not hearing any click?

Thanks

First issue is finding out why there is no fuel coming from the tank. Possibly debris stuck in the pickup tube. And the solenoid is connected to that wire that connected to the bullet connector. There should be battery voltage present with the key both in the start and run key positions, but make sure the other wire with the ring is connected to the top of the carb because it acts as the ground from the fuel solenoid. And checking fuses may not be a bad idea.

 

[firhill]

First issue is finding out why there is no fuel coming from the tank. Possibly debris stuck in the pickup tube. And the solenoid is connected to that wire that connected to the bullet connector. There should be battery voltage present with the key both in the start and run key positions, but make sure the other wire with the ring is connected to the top of the carb because it acts as the ground from the fuel solenoid. And checking fuses may not be a bad idea.

The pick-up tube is clear. I blew threw it before trying to draw fuel elsewhere.
I will start by checking the electrical/fuses/connections tomorrow and report back.
I don't recall any wire w/ring to connect on top of carb when I originally disconnected.
Just the single wire w/bullet connector you mentioned.
Thanks

 

[ILENGINE]

That wire I am thinking about may just be on the vertical engines. If you have the metal intake manifold it may not have the grounding wire. If it is plastic there will be a secondary wire that connects to the carb to ground it.

 

[firhill]

Either way, I should still hear some sort of click from the carb area when I turn key to start/run position..correct?
I will check that first

 

[ILENGINE]

Either way, I should still hear some sort of click from the carb area when I turn key to start/run position..correct?
I will check that first

Hear the click from the carb, And can also put your hand on the solenoid and feel it click.

 

[Auto Doc's]

Hi firhill,

You need a 12V test light to check for power to the fuel after-fire solenoid wire, not all of the bowl solenoids click very loudly.

Next verify the lines were connected correctly to the fuel pump. It is easy to get them mixed up.

The line coming from the block to the pump only provides crankcase pulsation from the piston movement when the engine is cranked.

This diagram may help:

Woods 6200 Mow`n Machine Parts Diagrams

Woods Parts Catalog Lookup. Buy Woods Parts Online & Save!

www.messicks.com

 

[firhill]

Thanks for the electrical wiring diagram link. I will go over it later tonight.

I replaced the fuel pump (Aluminum Block type) with one that looks almost identical.
The differences being the in and out connections in relation to the crankcase, carb and fuel in.

As for the actual ports, they are still located in the same 1/3 section of the block itself.
Fuel in on top, fuel out on bottom and line from crankcase to pulse diaphragm is in the middle.
Same as the old pump in that respect.

I will have to go hunt down a test light to check solenoid tomorrow.

Thanks again.