continental multifuel

[jacob bost]

Hi this is the only place i thought i might could find help. I have a continental multifuel 465 out of a m35a2 that i put in an excavator has been in for several years. Anyways we used it recently ran great mo problem we shut it off and left it sitting for about a month and when we went to use it it will not start have changed fuel filters and bled system have checked to make sure the hh is pumping with a pencil stuck in it and turning the motor over it will start with either and run for a little while but white smoke boils out and will run for a bit then smother out does not make sense it was running great when it was shut off and now wont run and have verified the fuel shut off is working great any suggestions.

 

[dmetalmiki]

Sounds like a head gasket has blown.
Check compressions, and look in the radiator when it runs.
Check the oil for contamination.

 

[jacob bost]

Have not checked compression but have checked oil and have look in radiator while it is running

 

[gimpyrobb]

Check the fuel shutoff rod. It should move freely, but they often stick.

 

[jacob bost]

It moves freely

 

[gimpyrobb]

No need to remove it unless its siezed:

https://www.steelsoldiers.com/showthread.php?143476-How-to-remove-the-Fuel-Shutoff-Rod-on-the-IP

 

[jacob bost]

It moves freely and is clean on inside. By the way I do have another engine with a ip and hh would it be worth a shot putting a different hh on would no think head gasket with it just sitting

 

[gimpyrobb]

Id take the hyd head thats currently on there off. The plunger might move up and down, but if the button on the bottom fell off(which is common) you wont have the correct stroke to pump fuel.

https://www.steelsoldiers.com/showthread.php?69241-Removing-rebuilding-reinstalling-Hydraulic-Head

 

[jacob bost]

Would it run at all with the button off it will run for just a few minutes then will smother out

 

[Elk1111]

If your using either to start it it’ll run for a bit on that but then shut off. My vote is it’s the button also.

 

[jacob bost]

It will run for about 30 seconds sometimes then sometimes it will run for 3 minutes but smokes the whole time

 

[jacob bost]

I have had it start one time and run for 15 min or so until I shut it off but I never gets past a fast idle even with throttle wide open but was running fine when it was parked about a month ago and when it ran for 15 min it smoked the whole time but won't rev up like it's not getting any fuel to open up and run I have not taken fuel lines off at the injectors to make sure fuel is going to them but have taken return line off and turned the motor and watched it squirt fuel out

 

[gimpyrobb]

Whatever the issue is, its pointing towrds "fuel related". I'd dig into the hyd head so you know its good, then move on from there.

 

[jacob bost]

Got the hh off button is still on

 

[doghead]

Is the drive key(shaped similar to a chevy bowtie) in place and not broken? It is on that HH tappet shaft and is what makes it rotate.

 

[jacob bost]

I believe that's the thing I just found that is broke

 

[Welder1]

I think you found your issue keep us posted

 

[doghead]

It usually breaks because the tappet shaft was stuck(could not rotate).

Clean with carb and choke cleaner and replace it. Do not use anything abrasive on the shaft.

Should be ok after that.

 

[doghead]

Now is also a good time to replace the rubber orings.

For immediate parts replacement , try Memphis Equipment, or White Owl, or Eastern Surplus or Boyce Equipment.

Otherwise, someone on the site may have what you need.

 

[jacob bost]

I swapped it with another hh I had cranked it up ran great thanks guys for all your responses if not I would of still been sitting there