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Old 03-31-2014, 07:45 PM   #1
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1990 Bounder

I thought we used to have a "Vintage" section. It's been awhile. Anyway, on my 90 1/2 Bounder, I noticed a small puddle in the gravel after starting it up and letting it idle. I climbed under just behind the passenger side rear tires and saw that THIS (photo) was spitting out a constant stream of FUEL while the engine was running. It's mounted to a bracket right next to the fuel tank. There are a few hoses in the area, at least one (maybe two) connect to whatever this is.

I have a GM chassis with 454.

What is this part and where can I get one...fast, I hope.

Thanks!

Ed
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Old 03-31-2014, 08:09 PM   #2
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A constant stream of what??

What chassis do you have?
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Old 03-31-2014, 08:28 PM   #3
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Quote:
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A constant stream of what??

What chassis do you have?
I edited my post. Sorry about that.
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Old 03-31-2014, 08:37 PM   #4
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Off hand it looks like a fuel pressure regulator. Do you have TBI?
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Old 03-31-2014, 10:32 PM   #5
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Off hand it looks like a fuel pressure regulator. Do you have TBI?
Thank you for the reply.
While waiting, doing a Google search, I determined it IS a fuel pressure regulator. I don't know what "TBI" is. Nor do I know where I can get a regulator of this "vintage" quickly. We had planned to take the rig out this coming weekend.
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Old 04-01-2014, 12:35 AM   #6
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TBI = throttle body fuel injection.

Autozone or NAPA probably have that fuel pressure regulator.
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Old 04-01-2014, 10:42 AM   #7
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If you knew what the pressure was/is you can get a generic adjustable one from Holly or any auto parts store. Have you tried to tighten the screws on the cover? Maybe they are loose.
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Old 04-01-2014, 11:37 AM   #8
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Ok I say he must have a carb that is a holly regulator it is adjustable but only up to 15 psi I just replaced mine because it leaked it is about $40 see if you have a speed (race) shop around you either had a holly blue or red pump from the factory it will be set around 6psi
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Old 04-01-2014, 05:41 PM   #9
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Quote:
Originally Posted by gt350ed View Post
I thought we used to have a "Vintage" section. It's been awhile. Anyway, on my 90 1/2 Bounder, I noticed a small puddle in the gravel after starting it up and letting it idle. I climbed under just behind the passenger side rear tires and saw that THIS (photo) was spitting out a constant stream of FUEL while the engine was running. It's mounted to a bracket right next to the fuel tank. There are a few hoses in the area, at least one (maybe two) connect to whatever this is.

I have a GM chassis with 454.

What is this part and where can I get one...fast, I hope.

Thanks!

Ed

Your post is in the Vintage section.
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Old 04-01-2014, 05:57 PM   #10
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On this vintage motorhome Chevy used a electric fuel pump at the fuel tank. It was used to push fuel to keep from having a problem with vapor lock. This IS a pressure regulator to regulate the pressure from the pump.
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Old 04-02-2014, 01:14 PM   #11
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On this vintage motorhome Chevy used a electric fuel pump at the fuel tank. It was used to push fuel to keep from having a problem with vapor lock. This IS a pressure regulator to regulate the pressure from the pump.
Hi Guys! I'm sorry for not getting back here over the last 36 hours or so. Life got in the way. Yes, it is a carburetor on a 454. Have not eye-balled the electric pump yet, but I suspect it's behind a cover where fuel hoses are leading just behind the outer passenger wall behind the rear wheels, opposite the regulator mount adjacent to the fuel tank.

In any event, I removed it yesterday. Although it is possible that it just needed cleaning, I made a decision to get a new one. I'll keep the old one and see about cleaning, or maybe seeing if a kit is still available.

In the meantime, right or wrong, I ordered a Holley 12-803. This model is for a carbureated motor. By purchasing it thru Amazon online, I was able to receive it overnight. Got it delivered as I'm writing this.

It has a range of 4.5-9 psi. Just for reference, I put a call in to Holley and they indicated that I need about 5-6 psi for my particular motor/carb. Holley indicated that the regulator should be fine for that without adjustment.

I will install it within the next few days and report back.

Thanks for the replies.
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Old 04-02-2014, 01:53 PM   #12
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Good deal bet it will work out of the box as mine did
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Old 04-03-2014, 03:57 PM   #13
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For that year model P30 the electric pump was in the gas tank.

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Old 04-03-2014, 04:07 PM   #14
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Chevy Motorhome Service Guide (page 7-49, pdf page 144) says regulator output pressure should be 4 1/2 to 5 psi.

Dave
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