Forklift help anyone

marty79

marty79

Well-Known Member
Joined
Nov 24, 2013
Location
Newton, NC
Hey everyone just looking for little help on this Yale Forklift at work. Has the Mazda 2.0 new plugs, wires, whole new distributor, new timing belt and head gasket.
the biggest issue is usually it'll start just fine when it's cold but throughout the day when you shut it off it or either start right back up or the other half the time it was just crank and crank and crank shut it off and just keep cranking and eventually it will start. I don't know propane systems so I'm not really sure how to test "fuel" issues lol.
When it runs good it runs good but then other times just falls on its face until good and hot.
it's done this for quite a while way before I came here he said it's been doing this for years timing belt head gasket didn't change anything I just set the timing and made it run a lot better once it gets hot it's got good power band but that's as far as I can get with it. Thank you for any help and advice. I'm just trying to help him with what I can before we have to call I guess a professional forklift person to come work on it which we both know is going to cost quite a bit lol. Thanks
 
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From a gasoline engine perspective it acts like when it doesn't start it just seems like an engine would when it's flooded or a Jeep with a bad crank sensor lol
 
rockcity said:
Just call the mechanic to fix it in 10 minutes rather than spending hours of time not being productive on other more important things.
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True however time I have lots of so let's skip that part lol..
 
paradisePWoffrd said:
if not the mixer and regulator serviced.
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If that's the two big round things that are in the picture that Supply the propane to the throttle body those were serviced/rebuilt within the last year.. is there a simple way to test if it's being flooded those times where it won't start
 
The mixer is the carburetor. The other 2 look to be the regulator and maybe a lockoff. A better pic of them, so they can be identified would help.

Propane is a gas when it flows into the engine, so flooding isnt really the same. When were the plugs changed? Propane can foul out a plug and you wont notice it by just looking at the plug.
 
paradisePWoffrd said:
The mixer is the carburetor. The other 2 look to be the regulator and maybe a lockoff. A better pic of them, so they can be identified would help.

Propane is a gas when it flows into the engine, so flooding isnt really the same. When were the plugs changed? Propane can foul out a plug and you wont notice it by just looking at the plug.
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All work mentioned is month old...
 
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Okie dokie, thank you
 
So the round unit in the back (VFF30) is a vacuum lockoff. That means, if the engine is wore out or low on vacuum, it will have a hard time pulling the diaphragm open. The one in front of it is the regulator; it converts the pressurized liquid fuel into gas. There should also be coolant lines flowing through it, or it will freeze up and not work.

You should be able to look into the air intake on the carb and see the diaphragm moving up and down, from the vaccum change, when throttle is opened/closed. Not sure what the contraption is below the carb.
 
Stop fuckin with the carb, replace the regulator and the vacum lockoff in a pair.

The regulator is likely full of tar and when it gets hot at full temperature and you shut it off The Regulators is not fully seal back. It will cause the engine to flood it start. Replace the vacuum lock off at the same time, they are common to get stuck and let gas flow even when there is no vacuum. They are both very cheap to replace, probably about 60 bucks a piece you can even buy them on Amazon

If the diaphragm inside of the mixer / carburetor has any holes in the fabric replace it. If not clean it with some brake cleaner and put it back in.

Myself and @Blkvoodoo have probably replaced a thousand of those things
 
Replace both the regulator and lock off and then I will teach you how to set the idle mixture on the carburetor.

Ensure for your safety that the propane tank is shut off and disconnected from the hose before you begin any work, for the line goes into the lock off and sure you take it off slowly to let the pressure that is still in the line release, it will burn / freeze the hell out of your hands if you go too fast, make sure you use Loctite thread paste or Teflon tape when you put the fittings back together

This type of regulator is non-adjustable so you don't have to worry about that
 
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paradisePWoffrd said:
The mixer is the carburetor. The other 2 look to be the regulator and maybe a lockoff. A better pic of them, so they can be identified would help.

Propane is a gas when it flows into the engine, so flooding isnt really the same. When were the plugs changed? Propane can foul out a plug and you wont notice it by just looking at the plug.
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1

Flooding is actually a huge problem in the forklift industry, propane Regulators whatever setup you may have the most common failure is to Rich condition. Normal failure is fail to start

This comes from service technicians not draining The Regulators during service to remove all the propylene and tar from the regulator which intern eats up the diaphragms in the regulator
 
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paradisePWoffrd said:
So the round unit in the back (VFF30) is a vacuum lockoff. That means, if the engine is wore out or low on vacuum, it will have a hard time pulling the diaphragm open. The one in front of it is the regulator; it converts the pressurized liquid fuel into gas. There should also be coolant lines flowing through it, or it will freeze up and not work.

You should be able to look into the air intake on the carb and see the diaphragm moving up and down, from the vaccum change, when throttle is opened/closed. Not sure what the contraption is below the carb.
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Just for educational purposes that Contraption below the mixer is the throttle governor, it regulates engine speed at Max RPM, basically air flow goes through a throttle plate spring tension at certain vacuum can close it up to limit engine speed

My customers at one time had a bad habit of screwing with the governor adjustment so the engine would run at extremely high RPM, they made me a lot of money replacing hydraulic pumps
 
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Thanks Jason W I will talk to boss about all this.
 
To fix it you would probably have about two and a half hours labor because the tech will have at minimum an hour drive time, any decent forklift company will be 90 $95 an hour

The parts to fix it are extremely common and any decent forklift Service Company would have them stocked on the van so they shouldn't have to make two trips
 
Jason W. said:
Just for your information if you call Yale Carolinas for service they are a bunch of f****** idiots. Call either vesco toyotalift or lift one, they are both out of Hickory

And no I want come work on it, I am retired, screw that mess.
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But you will answer the phone for an old TJC buddy when his MitsuSomBitchi starter acts up.
That's a fact!
 
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