Discussion:
c500 y80 stuck valve?

I picked up a non running clark c500 y80 today I am unsure of the year the data plate was painted over at one point. I assume the serial # is y685-385-2153 then 273 appears to have been added at the end. Lift hasn't been run in 2 years but was apparently in fine running shaped when put away.

Either way there are a few problems I have found with the lift so far.

one is that fuel does not flow through the vaporizer. I already checked that electromagnetic safety valve, and even removed it from the system to be sure. I assume the vaporizer is bad or stuck or clogged? It appears to be newer compared to the rest of the parts.

the second is that it appears to have alot of coolant mixed in with the oil when I pulled the dip stick. I assumed this was a blown head gasket issue. So I pulled the plugs a few were quite damp. I did a compression test and got a result of from back to front 155,140,115,0,145,145. The cylinder with zero it appears the one of the valves is stuck open when cranking and looking in the spark plug hole it isn't moving.

I didnt plan on rebuilding the whole motor is there any known work around for this? I sprayed a bunch on penetrant down the cylinder to see if it loosens.

Also mice or something ate through two spark plug wires is there a delco or generic PN I can use for these?

Also what even is this motor? Its an lp flat 6
  • Posted 26 Apr 2013 07:03
  • Modified 26 Apr 2013 07:04 by poster
  • By patdoody
  • joined 26 Apr'13 - 20 messages
  • nj, -
Showing items 41 - 41 of 41 results.
Okay update the wd40 worked faster than anticipated. it looks like all the valves are moving now, and compression on that cyl went from 0 to 135. A little low but it hasn't run in a while. Here are some photos of my lift truck.
number stamped toward the rear of the head.
From the vaporizer it goes right to the carb via a large rubber hose. The safety switch is off here but in the background.
over all shot of the motor.
Images
  • Posted 26 Apr 2013 07:17
  • Modified 26 Apr 2013 16:06 by administrator
  • By patdoody
  • joined 26 Apr'13 - 20 messages
  • nj, -

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