Adj fuel regulator issue, maybe?

[1leg]

I have installed a volt gauge that is taped in at the plug near the tank. at least the next time it happens i will have something to look at currently reading 13.5 amps. The fuel lines are stock and this exhaust has been installed for more than 3 year. I have only had this issue for about 3 months. Only thing I have done in the last 4 months is spark plugs, fuel pump, fuel filter, cap and rotor. I did add a second battery about 1 year ago.

Today I also installed a 140amp alternator that i had built buy a local rebuilder finally, been wanting to do this sence I add the 2nd battery.

Thanks everyone for the help.

[1leg]

Ok the issue reappeared today, going to work, when I left the house had 13.5 when I got to work 4 miles had 13.5psi and 13 volts, left for lunch had around 10psi, volt gauge was reading 12.5 - 13 volts, left home to go back to work had 10psi and 12.5-13 volts’ got back to work and was still 10psi. Left work to go home and it was back to 13.5psi when I got home it was still at 13.5psi and 12.5-13 volts.

I'm pretty sure it is not a voltage or wiring issue. Leaning toward a problem with the fuel regulator, or something in the fuel line is blocking fuel. Going to reinstall the original TBI unit and regulator, then blow out the fuel lines. If the problem is solved I will pull the current TBI and fuel regulator apart to see what I find.

Just to remind everyone, 10psi does not make the truck un-drivable around town, however I have seen the PSI drop below 9psi and it is nearly impossible to drive however I have made it home each time.

If anyone has any other ideas please let me know.

[stegey]

curious if you have fixed it yet ? if not , ruled out electrical from what i've read . i would lean toward the rubber hose connection on the sender between the sock and the pump , possibly a crack or loose clamp ? a regulator would not be intermittent like you describe one would not think plus you would smell it if the diaghram was leaking . just my 2 cents . keep us updated.

[1leg]

I installed my old regulator and injectors and have not had any issue since. I also blow out the fuel lines before installing. I have not had a chance to take the adjustable regulator apart yet.

I suspect that either I had something in the fuel line that was blown out or something is wrong with the adjustable regulator.