A vapor lock condition would be caused. It's unlikely that anything's stuck. . Reid Vapor Pressure (RVP) is a commonly used indicator of gasoline volatility. Holley fuel pressure regulator 12-803 instructions for a bad /189/ I cannot help you - and no one can without knowing the exact make up of the gasoline being refined where you are. Fuel Pressure Regulators Instruction Sheet (42712804), Designed to be used with standard pump only, Measures 2-1/2" wide and 1-1/2" tall and deep, This low pressure fuel regulator is factory-set to 2.7 PSI, but is fully adjustable from 1 to 4 PSI, It includes mounting bracket with 2 each self-tapping screws for regulator to bracket installation purposes and 3 screws for bracket to vehicle installation, 1-3/4" hole spacing to mount the regulator to the bracket. All kinds of remedies were tried. Lots of Chinese Holley 12-803, 804 etc knock-offs are available. I realize this is an old post - but when people write things that are WRONG - it leaves the next Joe who comes along thinking that is the correct answer when especially in this case - it is NOT. . Lots of Chinese Holley 12-803, 804 etc knock-offs are available. Show details You'll find they both have the same initial boiling point - been there and done it. The only difference that the Holley tech told me between the two springs is the color. May God's grace bless you in the Lord Jesus Christ. Right & left, Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.Learn more how customers reviews work on Amazon. Holley 12-804 Holley Fuel Pressure Regulators | Summit Racing Add some heavy ends. Worked well out of the box. 03-28-2012, 03:04 AM. Holley HOL 12-804 12-804 Fuel Pressure Regulator The owner had tried all practical means to reduce the heat gain of the fuel system but with little improvement. f9vxY"IpBQ? Holley Fuel Pressure Regulator Rebuild 12-804 - YouTube 0:00 / 37:53 Holley Fuel Pressure Regulator Rebuild 12-804 DurocShark 309 subscribers Subscribe 10K views 3 years ago I walk through. Eligible for Return, Refund or Replacement within 30 days of receipt. Exclusive, high-quality Global Featured Holley Transmission Kickdown Point and secure it into a clean container Inlet pressure of 7 psi limitation means your pump can not put out more than 7 psi to the regulator for it to properly operate. We work hard to protect your security and privacy. I put it . Then I got this good one, to try to get 1.5 PSI to the Kadrons. Part Number: HLY-12-803. $5 Off Your $100 Mobile App Purchase . In a deadhead design the fuel comes into the regulator from the bottom past a check ball which is held open by a pin on the diaphragm. 3/8 pipe thread ports; 7/32 restriction; . Please refresh and try again. Holly Fuel pressure regulator install | Jeep Enthusiast Forums Carb Part, 14 PSI Fuel Pressure Regulator Set 3/8in NPT Port 12804 for Holley : Amazon.com.au: Automotive I'm still looking for the reg in this pic. (that is this one in the image below) The adjustment spring under the adjustment screw is pushing down on the diaphragm holding the ball off it's . As Raywith pointed out, you need to let the pressure go somewhere. In the later 1960s, it was somewhat common for people who were going on vacation, in the summer, to add a gallon or two of diesel to a full tank of gasoline for their trip. As the car is parked Temperature. Reviewed in the United States on April 2, 2022. One common problem is when you have an abnormally warm day in the winter, and the low vapor pressure gasoline in the car will vapor lock on that hot day. The two will be very close to the same just as would Water and Anti-Freeze boiled in an open pot. If you have it plumbed up "dead headed", lowering the pressure might not react very quickly. 3 0 obj <>stream Got a gauge on the FPR to monitor, and at first it was great. I will be trying one of these but am curious what is the active ingredient(s). . I have no idea - you are in uncharted territory. Thinking Kerosene is probably the way I will go at this point. 100% Satisfaction Guaranteed CBPN804A Swinging Drawbar Pin Kit Ford NAA 501 600 700 800 900 2000 3000 4000 satisfaction guarantee the daily low price westernnorthndc.org, US $11.9 3000 501 Also services earlier models (1953 to 1964) using swinging drawbar: NAA 600 For Ford Tractors 2000 4000 (1965 and up) Jubilee . So with that vapor fueling system - you are stuck "downgrading it" to a lower quality fuel. The issue is boiling points UNDER PRESSURE we are talking about here - though the BP article speaks to other issues of engine and carburetor design contributing to the vapor lock problem. Adjustable Fuel Regulation From 1 To 4 PSI.220 Inch 7/32 Inch Restriction. 12-804) is a Low Pressure (1-4 PSI) regulator. The reg takes 3/8" fittings and the gauge takes 1/8" fittings. Some can be used for either - or. Troubleshooting Carburetor Problems and Vaporlock Blues Revisited - Hagerty Lifestyle. It is as said - of the "paint thinner" family in weight with ehtyl acetate blended in to make it's solvency properties a little "hotter " and stronger. Holley Carburetor Fuel Pressure Regulator 1 To 4 Psi Bottom Inlet Sides . It appears this one needs 40 to 50 minimum. [endif]-->,