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Author Topic: 8-1 Injector return line  (Read 3172 times)

jimboz

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8-1 Injector return line
« on: June 06, 2014, 03:56:19 PM »
What is the purpose of the return line?  I've yet to see any fuel out of it, granted I've only run it with no load.
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Thob

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Re: 8-1 Injector return line
« Reply #1 on: June 06, 2014, 09:38:55 PM »
A small amount of fuel may leak past the pin in the injector to the top side of the injector.  I would expect more fuel to leak past with higher load (longer injection time) and with more wear on the injector.  It also allows any air remaining in the system after bleeding to leak out, which is a good thing.
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Witte 98RC Gas burner - Kubota D600 w/ST7.5KW head.
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Horsepoor

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Re: 8-1 Injector return line
« Reply #2 on: June 07, 2014, 03:35:28 AM »
Here is a good video on how and why it works: http://www.youtube.com/watch?v=EbjDH7fr_J8
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GTC 20/2 down rated to 850 rpm - ST 15
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BruceM

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Re: 8-1 Injector return line
« Reply #3 on: June 07, 2014, 02:55:47 PM »
Great link, horsepoor!
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