Blue Hp 500 vaccum line question
06-04-2011, 04:16 PM
#1
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Join Date: Sep 2010
Location: Clio, MI
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Blue Hp 500 vaccum line question
I am just finishing assembling my engines wich were givin to me in boxes and I ran into something puzeling. The tubes that run off the valve covers on both engines are just the hard plastic tubing simuiliar to what you would use to cover wiring harnesses does anyone know where the end of this runs to? Theres no spot on the flame arrestor or anything like that. I also have a open vaccum port on the intake . One runs down to the cool fuel the other run to the fuel presssure regulator and the third bigger one Im not sure It dosent fit the tubing comming from the valve covers though any help would be awsome
06-05-2011, 08:31 AM
#4
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well maybe a lttle more info ?? as they made a carb and EFI blue 500hp engines over several years...and there maybe are some changes over the years, also who's to say somebody did not change yours, and lots of us have them...
06-05-2011, 09:10 AM
#5
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On my EFIs the plastic tube runs up under the flame arrestor and is held there by a small wire tie with an adhesive base on the thermostat housing. It is just so any vapor coming from it will be drawn into the engine. The big vacuum port on the back is plugged on mine, not sure what it is on there for.
06-05-2011, 09:11 AM
#6
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One vac line to the pressure regulator on the cool fuel. One to the pulsater ( that is not the pressure reg) on the fuel rail. Large one plugged. Hard lines just lay under the flame arrester tied to a 3m sticky assuming its a 500efi and not a carb motor.
LOL, ya, what Ted said.
LOL, ya, what Ted said.
Last edited by Airpacker; 06-05-2011 at 09:13 AM.
06-05-2011, 09:37 AM
#7
One vac line to the pressure regulator on the cool fuel. One to the pulsater ( that is not the pressure reg) on the fuel rail. Large one plugged. Hard lines just lay under the flame arrester tied to a 3m sticky assuming its a 500efi and not a carb motor.
LOL, ya, what Ted said.
LOL, ya, what Ted said.
