mechanical fuel pump reinstall 72Z

[swflaz]

when i'm reinstalling my fuel pump after rebuild is there a need to go over or under a cam in the block or do you push it straight in. i'm asking because it's not feeding fuel to the carbs and i don't believe that the pump valves are installed incorrectly. any help is appreciated.

[jitenshakun]

You just push it in and wiggle it a bit. If there's lots of resistance your on a lobe and if it slides right in you are between a lobe. Either way, it'll start pumping as soon as the engine spins.

To rule out fuel flow disconnect the line between the carbs and mech pump. Have a friend crank the car and watch for fuel flow. A bucket is handy at this point.

[jitenshakun]

You just push it in and wiggle it a bit. If there's lots of resistance your on a lobe and if it slides right in you are between a lobe. Either way, it'll start pumping as soon as the engine spins.

To rule out fuel flow disconnect the line between the carbs and mech pump. Have a friend crank the car and watch for fuel flow. A bucket is handy at this point.

[swflaz]

Thanks for the input. i'll try that in the A.M. 

[jitenshakun]

Also, aftermarket mech fuel pumps seem to work for 0min to 30min on average. This isn't an issue if you are using your original pump.

[swflaz]

still the original "Denke" ? Thanks

[siteunseen]

Don't forget the spacer between the head and the pump.

[swflaz]

right, got it. just curious, if i remove the valve cover will i be able to see where the pump arm rests inside the block? Thanks again.

[jitenshakun]

That'll work, but it could get "pumped" and still not flow fuel. Checking the line after the pump is the best way to know if it is working.

[swflaz]

i totally agree. thanks for your inputs. i'll add to this thread when i figure it out. Soon , i hope. 

[jitenshakun]

I feel your pain. I went through all this a little over a year ago. I ended up with an electric pump by the tank.

[swflaz]

Yes, i've thought about that option. still trying to keep it as original as possible. We'll see .