Discussion:
1966 clark c20b forklift issues

This is a new to me clark c20b. It is propane powered and has a 4 cylinder motor. It will cough every once in a while but not start. I have never worked on a propane system. I am trying to understand the system. I will include some photos so you know what I got. any Ideas. I replaced the plugs and have spark but it is not blue more like a yellow spark.
  • Posted 11 Nov 2013 03:07
  • By ladrhog
  • joined 15 Jun'13 - 10 messages
  • Washington, United States
Showing items 21 - 27 of 27 results.
I checked compression and it is at 140psi. what should it be at?
  • Posted 12 Nov 2013 09:37
  • By ladrhog
  • joined 15 Jun'13 - 10 messages
  • Washington, United States
points are good. gap is.017
  • Posted 12 Nov 2013 09:24
  • By ladrhog
  • joined 15 Jun'13 - 10 messages
  • Washington, United States
This have points in the distributor? how do they look?.....Gap???
  • Posted 11 Nov 2013 20:28
  • By kevin_t
  • joined 2 Dec'10 - 1,301 messages
  • Pennsylvania, United States
Make sure to get the right type of coil- internal or external resistor type. As far as I know- pictures can't be posted here. You can send pictures to my email.
  • Posted 11 Nov 2013 14:33
  • By bbforks
  • joined 1 Mar'12 - 1,437 messages
  • Pennsylvania, United States
bbforks (at) Hotmail (dot) com
Customers love technology- until they have to pay to fix it!
It screws down. I am going to get a condencer and a new coil tomorrow. the coil will not jump even 1/4 inch when connected to a screwdriver and near a good ground. can you post pictures on this forum?
  • Posted 11 Nov 2013 13:02
  • By ladrhog
  • joined 15 Jun'13 - 10 messages
  • Washington, United States
If you follow the hose from the propane tank, it should go to either a little electric solenoid or a larger valve assy with a vacuum line attached, from there it should go to the regulator which will either be mounted in the thermostat housing or a stand alone unit. To help I need that information first.

As far as the spark- it needs to be bright blue & jump a distance of at least 3/8" or better when the spark plug wire is held close to a known good ground (cyl head bolt, etc). If it's orange or yellow then the spark is weak & will cause issues. I would suggest a complete tune up if your spark's yellow. Does your dist cap screw down to the distributor or have clips?
  • Posted 11 Nov 2013 06:32
  • Modified 11 Nov 2013 06:37 by poster
  • By bbforks
  • joined 1 Mar'12 - 1,437 messages
  • Pennsylvania, United States
bbforks (at) Hotmail (dot) com
Customers love technology- until they have to pay to fix it!
well i guess I cant post pics so I'll try to explain.
  • Posted 11 Nov 2013 03:08
  • By ladrhog
  • joined 15 Jun'13 - 10 messages
  • Washington, United States

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President EPG Americas, Ehrhardt Partner Group (EPG)
CEO, Duravant
Manager of automated solutions engineering and implementation, MHS Lift
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