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weber pressure regulator help

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Offline Riverrat

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Re: weber pressure regulator help
« Reply #30 on: March 25, 2011, 05:53:51 AM »
Getting ready to replace my old Weber 32/36 with H2O chole on my '87 Samurai with a new 32/36 with manual choke. I'm also going to install a Holley 12-804 pressure regulator. The previous owner never hooked the carb up to the vent hose on top of the valve cover. I replaced the fuel pump last week with a new stock mechanical pump.

Does anyone have pics showing how the air cleaner vent line is hooked up to the line out of the top of the intake/valve cover. Also, pics of where people have mounted their fuel pressure regulators.

Thanks in advance,

Rick  


Rick!
I wished I had drilled a hole in the air cleaner top, & brought the vent in there!! I used 4 - 3/8  plastic 90's & clear tygon tubing. Don't look to bad, I may do top thing later! The regulator is slightly aft of carb. I have to set my regulator |removethispart|@ 4# to get enough fuel to keep it running & I think it's  draining back overnight! Fuel pump must be iffy, other than that, runs great!

Later!
Riverrat
« Last Edit: March 25, 2011, 06:48:11 AM by Riverrat »
Jimmy

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Offline jtigki

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Re: weber pressure regulator help
« Reply #31 on: April 18, 2011, 07:44:05 PM »
well I got a fuel reg. it was not receiving gas I had it at 1.5, 2.0, even at 2.5 I had at 5.0 no gas coming into the crab. can you guys help to much fuel & burning rich.

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Online fordem

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Re: weber pressure regulator help
« Reply #32 on: April 19, 2011, 06:29:14 AM »
Can we clarify this - no gas coming into the carb means it will not run - as against too much fuel and running rich.

If you installed a regulator and there was no gas to the carb, then you have two possible scenarios ...

1) incorrect installation.
2) defective regulator.

I was considering a third possibility - the wrong choice of regulator, but even if you chose a regulator with too high a pressure setting, it should still allow fuel to flow.

If you installed a regulator and it is running rich - please first note that excess pressure is simply one possible cause - the options are ...

1) incorrect installation
2) incorrect setting (although you seem to have this covered)
3) defective regulator
4) carburettor related issues.

Wait a minute - I had, at 5.0, no gas coming into the carb - meaning the regulator cut the fuel off when set to 5.0 - I tell you, proper punctuation does wonders for readability.

If that is what you meant - check to see if you have the regulator outlet & return lines routed correctly - as you increase the pressure setting the regulator should divert less fuel to the return and more to the outlet, assuming that the pump can supply the required pressure, and when you exceed the pump capability, it will/should send all the fuel to the outlet & none to the return.

That cut off at 5psi suggests that you have the lines reversed.
« Last Edit: April 19, 2011, 06:32:22 AM by fordem »
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