Discussion:
I've got smoke due to overheating, a frozen evaporator and almost zero knowledge of propane engines!

My forklift has been acting up lately but I thought it was just due to the dropping temps. Finally pulled my head out of my but and realized there were bigger issues so I pulled it into my heated shop. After letting it warm up I fired it up and let it run at a slightly elevated idle. Within 5 minutes I could smell smoke so I went to check on it and I could hear and smell it was way too hot and the evaporator was covered in frost.

Before I noticed the overheating issues, the forklift would start and run fine for a little while and then it would die (acted like it wasn't getting enough fuel). It would also really smell like propane after it died. Let it sit for a while and then it would start again.

Pictures showing smoke and evaporator
https://imgur.com/a/nfxGfbR
  • Posted 17 Dec 2020 07:06
  • By evilblackdog
  • joined 24 Jul'18 - 8 messages
  • United States
Showing items 1 - 5 of 5 results.
Coolant is the same as you would use in any other IC engine. If you think you may have a leak, you could just fill it with water to test for the leak.
  • Posted 18 Dec 2020 09:48
  • By meliftman
  • joined 31 Jan'12 - 209 messages
  • Alabama, United States
Liftman
Retired
Elberta, Al.
Do you happen to know what kind of coolant to use?
  • Posted 18 Dec 2020 04:45
  • By evilblackdog
  • joined 24 Jul'18 - 8 messages
  • United States
Check for coolant leak but if it was run low on coolant long enough it may have accumulated a significant amount of tar, requiring rebuild or replacement.
  • Posted 18 Dec 2020 02:37
  • By Triggs
  • joined 26 Sep'18 - 145 messages
  • California, United States
Might be a leak or a bad thermostatic valve.
  • Posted 18 Dec 2020 00:55
  • By Yidnecks
  • joined 1 Dec'20 - 6 messages
  • New York, United States
You get what you pay for.... and you haven't paid.
Solved this one myself.
I thought I had already checked the coolant level... I had not. I learned that the coolant travels through the vaporizer and keeps it from freezing up. A low coolant level was causing the engine to run hot and to ultimately freeze up the vaporizer. I'm going to fill it back up and look for the leak.
  • Posted 17 Dec 2020 09:52
  • By evilblackdog
  • joined 24 Jul'18 - 8 messages
  • United States

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Bensenville, United States
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Editorial calendar - planned features
CONSTRUCTION FORKLIFTS
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BROWNFIELD AUTOMATION
FORKLIFT ATTACHMENTS
BATTERY AFFORDABILITY AND LIFETIME
FORKLIFT SAFETY