Advancing the timing just 2 degrees to 30 BTDC at max advance pretty much solved the problem, but it was decided that was possibly masking a problem somewhere else at the expense of the health of my engine and a couple things would need to be verified before anything different than 28 BTDC should happen.
A check of my float levels appeared to be correct, and that left me with the remaining task to test the fuel pressure output of my mechanical fuel pump.
Tonight, I did just that and I have a few questions
Bentley says the MAXIMUM pressure is 5 psi for the mechanical fuel pump on the dual carb bus. The MINIMUM rate is not a pressure measurement, rather a cc volume per minute. How does that equate to a minimum PSI measurement on my gauge??
I got a 2.5 psi measurement at idle and a couple hard revs show that it drops slightly to 2 psi and returns to 2.5. I have not tested this while driving, because I need a partner to view the gauge while I drive but from a preliminary evaluation, what do you guys think?
Here is a video that might help.
http://s491.photobucket.com/albums/rr28 ... _15421.mp4
Any thoughts? Are my mechanical fuel pump days over and I need to go to an electrical fuel pump now???
Harbor Freight

