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

Post your Reply

Forkliftaction accepts no responsibility for forum content and requires forum participants to adhere to our rules of conduct. Click here for more information.

If you are having trouble using the Discussion Forums, please contact us for help.

Upcoming industry events …
July 9-10, 2025 - Birmingham, United Kingdom
October 21-23, 2025 - Panama City, Panama
Global Industry News
edition #1236 - 26 June 2025
As June comes to a close, the month when our sector recognises National Forklift Safety Day , the United Kingdom’s Association of Industrial Truck Trainers (AITT) has issued a timely reminder of the need to ensure any staff training is fully accredited... Continue reading
Upcoming in the editorial calendar
WIRELESS CHARGING
Aug 2025
MANAGING MIXED FLEETS
Oct 2025
Latest job alerts …
Evansville, IN, United States
St. Louis, MO, United States
Uxbridge, Canada
Daleville, IN, United States
Load Lifter 518
Flesherton, Ontario, Canada
Used - Sale
UN Forklift FBR25NQC3
HANGZHOU, Zhejiang, China
New - Sale
Upcoming industry events …
July 9-10, 2025 - Birmingham, United Kingdom
October 21-23, 2025 - Panama City, Panama
Movers & Shakers
Jeannette Walker Jeannette Walker
CEO, MHEDA
President, European Rental Association (ERA)
Chief marketing officer, JLT Mobile Computers
Chief executive officer, East Penn Manufacturing
Upcoming industry events …
July 9-10, 2025 - Birmingham, United Kingdom
October 21-23, 2025 - Panama City, Panama
Upcoming in the editorial calendar
WIRELESS CHARGING
Aug 2025
MANAGING MIXED FLEETS
Oct 2025