[mrm930]

Hello all, back at this again. Out of town a few days, and also had to the new pump and fittings. The Bosch 044 is no longer available, being replaced with #200. Minor issues to deal with, the pump is smaller in diameter and longer in length. The fitting sizes are also different. However it has a higher output and draws less amps (sounds okay so far). The pump came with adapters for the input, however the output is smaller for whatever reason. If used braided SS lines with AN fittings. I had to order new fittings for the output.

Installed everything. Double checking hose and electrical connections. Fueled up the gas tank to a little over half. Turned the ignition on and both pumps fired up.

First pressure test I did was to check the fuel pumps after the the fuel filter. Connected the pressure gauge and turned on the pumps. Pressure came up very quickly, ran past 7 bar and kept going. If you would extend the gauge markings, it appears it hit 9 bar.

Hooked up the test equipment to check control pressure and system pressure after the fuel head. Control pressure went up fast and went beyond 5 bar. Quickly check system pressure, back up to 9. Also the fuel head was “squealing”. The pressure plate was firmly pushed upwards and very firm. I just tried to see if it would move, it was extremely firm. Then just shut it down.

Really, now what?! Do I buy and install a pressure gauge with a valve to reduce the pressure to the head? Or other?

Thoughts? Thanks