Quote:
Originally Posted by howard freeman
How in the world did someone get the return line connected to the brake booster line?
Howard
|
Howard,
That's how I found it when someone installed his '78 SC engine in an '83 chassis . I got a call from a local Pelicanite about his cold starting problem. Came over to see what's going on with his start-up after installing the engine to a new chassis (track car).
When I first arrived at the scene, everything seemed to look normal and the owner mentioned his difficulties getting the engine to run. I hooked up the pressure gauge and the fuel pressures (control and system) were both too high at 90 psi plus. This could only meant that the return fuel flow was restricted somewhere!!!!! The question was where?
To prove my suspicion, I isolated the car's return line and installed a separate delivery system shown in the picture below. After connecting the improvised set-up, the pressure gauge registered an
18 psi control fuel pressure and a system of
72 psi. Turn the ignition switch and the engine turned and stalled. Try the second time and it roared to life!!!!
The big question at that time was, why the engine ran using the improvised delivery and return system but failed with the car's fuel line system. The answer was simple. There was an anomaly in the car's fuel line system. And I had no answer at that time. But one thing was demonstrated that the engine was working with the improvised fuel line system.
Description of the
McGuiver system:
1.
Delivery line system: A plastic fuel tank connected to a
FP delivers fuel to
FA to
fuel filter to
FD.
2.
Return line system: The return line from
FD is diverted back to the plastic tank. Thus eliminating the use of the car's return line.
So for the skeptical that this could or would never happen actually happened and I didn't do it. Don't kill the messenger. This was the guy you should question not me!!!!
Problem identified: The fuel return line from the FD was inadvertently connected to the brake booster vacuum line!!!! End of story.
Tony