What is the purpose of the carburetor fan that is mounted on the firewall on my 78 FJ40? I recently bought this unit and this fan is disconnected. Is it really needed? Thanks.
Carburetor fan
- Thread starter gibgoaz8
- Start date
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Hello gibgoaz8, I assume you are talking about the fan mounted inside the left fender panel, not the firewall. The fan blows cool air across the carburetor after shut down. The purpose is to keep the fuel in the carburetor float bowl from boiling over into the intake. Without the fan, the fuel boils over and causes a hard start after hot soak, i.e. flooded engine. You probably won't notice a problem in cooler climates, but it will be a problem on a hot summer day.
Hope this helps.
Michael
Hope this helps.
Michael
carb fan
Why on the later models and not the earlier ones?
Why on the later models and not the earlier ones?
I bet has a lot to do with all the stupid emission equipment that made the engine work harder which in turn causes it to run hotter. From what I understand the EGR system does caus the engine run hotter.
My '76 has one (different location than the 78), but it cools the carb down to prevent boiling of the gasoline. My '78 had a fan that never ran and it was fine, but I like things to work the way the Toyota Gods designed them to. I figure, the fan can't cool it too much, but it can get too hot....better to err on the side of caution. Shouldn't be hard to get 'er running....
Yes you want it, very useful smogged or not. They have constant power and a thermostat breaker that grounds them to turn on upon a hot turn off.
