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problem with clark lpg forklift

Number of messages: 14

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farfman
Alaska, United States

just bought a clark 10,000# four front tires forklift. it runs great for about 15 mins, then starts missing, not running on all clys, and loses power but still runs.........im not a mech, and was wondering what the problem could be so i know what to change, do, fix ect.....it runs on probane...it has a flathead 6 cly engine....thankyou........

Posted 4 Sep 2009 03:55 PM

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andrew_k
England, United Kingdom

is there plenty water in the cooling system to stop the gas vaporizer freezing up?

Posted 5 Sep 2009 03:21 AM

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farfman
Alaska, United States

i was told water from the cooling system is used, but as often as i check it, it seems to be good.........its like once it warms up the choke is still on?..............kinda runs like that........thankyou for your reply.

Posted 5 Sep 2009 07:32 AM

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towmotor
Ontario, Canada

andrew k ur old last 6 cyliner continetal i saw was over 27 years ago good to have you around ever done a valve job in frame regards

Posted 5 Sep 2009 10:59 AM

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towmotor
Ontario, Canada

andrew k sorry that was in uk

Posted 5 Sep 2009 11:05 AM

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edward_t
North Carolina, United States

is the water circulating? when it starts to run rough, if you touch the LPG regulator, is it cold or hot to the touch?

-------------------------
webhome = forktechs.com

Posted 5 Sep 2009 11:27 PM

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bigGlittlestar
United States

If the LP regulator is not frosting up, its probably the ignition coil. When it starts to misfire touch the side of the coil. If it is too hot to keep your finger on for more than a few seconds replace it.

Posted 6 Sep 2009 04:47 PM

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Prentice
Ontario, Canada

Also check your point gap in the distributor. ( sometimes the key is left on and it burns the points) I would just do a ignition and propane tune up. Parts are reasonably priced. Don't know about availability in Alaska.

Posted 8 Sep 2009 10:11 PM

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farfman
Alaska, United States

thanks all.............hope all this info helps.

Posted 9 Sep 2009 03:41 PM

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farfman
Alaska, United States

is it possible there is not a reg on it?...........i swear, there is nothing between the fuel tank and the engine, except what looks like an lpg carb of some sort on the engine.......

Posted 10 Sep 2009 07:10 AM

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bigGlittlestar
United States

Has to have one, straight tank pressure is way too much for any fuel system.

Posted 11 Sep 2009 02:01 PM

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allan_m
Washington, United States

I am a clark dealer in washington state. I will give you a # and you can talk to my lead tech Del he has been working on clark for 30+ year he will be glade to work with you.

1-509-547-7413

good luck

-------------------------
phat al

Posted 12 Sep 2009 01:36 AM

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johnr_j
Georgia, United States

As bigGglittestar stated there has to be a pressure regulator some where between the tank and carb. Some times two (priamry & secondary). Very often the symptoms you have described is caused by a bad diaphram (cracked, etc) inside this regulator or the needle valve is not seating properly due to excess tar build up or both.

-------------------------
Have An Exceptional Day!

Modified 12 Sep 2009 07:02 AM
by poster.

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farfman
Alaska, United States

thanks very much for the post, and also thanks to the dealer in wash state for the offer to help............bye the way, i did find a gizmo that must be the reg before it goes into part that attaches to the engine...........you guys are making this easier than i thought.......

Posted 12 Sep 2009 12:32 AM

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