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Installation Instructions for 15190 Fuel Log 

Installation Instructions: 

1. Once the engine has been allowed to cool, disconnect the negative battery cable and relieve fuel system pressure. 

2. Using an adjustable -AN wrench (such as JEGS #555-80625), loosen the pivot nuts so the carburetor adapter can be removed. 

3. Select the correct carburetor adapter fittings for your application. Place the two provided crush washers on the carburetor adapter fittings, carefully thread into each float bowl fuel inlet port on the carburetor and tighten. 

4. Adjust the fuel log to the appropriate centerline distance and loosely thread pivot nuts onto the carburetor adapter fittings. 

Note: Typically the fuel supply line will enter the log (-10AN Port) on the larger diameter end or the end with the JEGS logo and flow toward the smaller diameter end. The fuel supply will normally enter from the rear of the motor and flow toward the front to minimize g-force effects. 

5. With the fuel log in place pivot the log to the position that provides the most clearance and tighten the pivot nuts to 20 in-lbs.

Note: Be sure the fuel log clears the intake manifold, throttle stop, valve covers and any other components in close proximity. 

6. Attach the log fuel supply line; this is typically attached to the end of the log with the JEGS logo. 

7. If you are using a "dead head" style fuel pressure regulator, block off the second -10AN port on the fuel log using the supplied -10AN port plug. If you are using a "by-pass" style fuel pressure regulator, run a line from the second -10AN port on the fuel log to your regulator. 

8. Remove the 1/8" NPT pipe plug from the fuel log and attach a suitable fuel pressure gauge if desired. 

Ensure that any spilled gasoline and any gasoline soaked towels are cleaned up and removed from the vicinity of the vehicle! 

9. Reconnect the battery and turn the fuel pump on WITHOUT starting the engine until fuel pressure gauge registers fuel pressure. If your car has a mechanical pump, crank the engine over without starting the car (remove coil wire) to build fuel pressure. 

With the fuel pressure gauge registering fuel system pressure, check for fuel leaks from and around the fuel log, fuel pressure regulator, all fuel lines and connections. If any fuel leaks are found, turn the ignition key to the OFF position, remove any spilled fuel and repair the leak before proceeding. 

10. Once the fuel pressure gauge registers fuel system pressure and there are no fuel leaks, start the engine. 

11. Test drive the car to insure proper operation and re-check the fuel system for leaks.

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Posted on
May 10, 2018
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