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Driver's side cover is bolts on top, studs on bottom. Passenger side has studs except on front lower

You need pictures?

Fuel hose has at least three layers, these can delaminate without outward appearance of damage. The inner, most fuel resistant layer can collapse, causing such symptoms as seen. Fatty acid methyl ester (FAME, euphemistically called biodiesel) will attack aging rubber, causing this problem...

Sounds like partial vacuum in the tank. The lift pump provides a pressure of around 5 PSI gauge referenced to atmospheric pressure by spring force on a Viton-fabric diaphragm about 3 inches in diameter. That is an area of 7 square inches, the spring force is about 35 pounds. There is also...

Alternator output if using one with more than 100 ampere output. The rest of the wiring is adequate

On weekly PMCS, found the left rear clearance marker lamp on the M1031 SECM inop. A few years ago, I bought an entire set of lamp housings, amber and red, so this was just an easy swap..if my left hand worked correctly. So I dropped 3 nuts and lost a washer but with plenty spares, it is...

Back to the variable geometry turbine control..gradually remembering control theory, it looks like I know enough to create a proportional, integral and derivative control using operational amplifier chips..an analog computer. Proportional control is simply throttle position sensor, 0 to 5 volt...

VDO instruments are very high quality, used as OEM on many imports. Instructions are simple but you must measure belt ratio and know the pole count. 7.75 inch crankshaft, 3 inch alternator with 8 poles. 215 Hz output is 625 RPM. Easy as pi.

One crucial part of the variable nozzle turbo system is turbo control. These CKOs are Garrett generation 2 designs which means vacuum actuated vanes. Vacuum signal is controlled by a 120 Hz pulse width modulated valve, vacuum increases with increasing duty cycle. Since I don't have to worry...

As this is a 1031 SECM, the filler neck options are wide. No need for a locking fuel cap with the filler neck behind door #1 ( the generator control panel door). I get lots of looks whenever filling as the control panel is quite busy with 5 circuit breakers and switches, two gauges/meters...

Those batteries appear to be valve regulated sealed lead acid type. This type uses a recombination catalyst that regenerates water from produced hydrogen and oxygen. This design is used in absorbed glass mat and flooded cells. It is best to have a good voltmeter in case of regulator failure...

The spade from the injection pump connected to the green wire does two things to the pump when energized, first is case pressure is reduced to less than 1 PSI (normally 10 to 12). This case pressure reduction increases plunger filling rate which can increase power over all speeds. The reduced...

It could be the throttle cable, you mentioned the 1/8th turn..is this on the throttle shaft? When the pump is calibrated for idle, it is spun at 650 RPM engine speed (pump spins half this, 325 RPM ) with throttle at idle speed. Injected quantity is then adjusted by varying the internal low...

Idle speed is governed internally, who rebuilt the pump? Have you modified the maximum fuel delivery limit? Removed the guide rod?

Idle speed is part of calibration, most 6.2 are set at 650 RPM and injection 12.5 to 16.5 mm^3 per firing stroke on each cylinder. The volume of diesel injected dictate engine speed. When cold, the throttle is held open a bit by the external high idle solenoid. The power to this solenoid...

Bad hoses. Top to transmission.

Tow4, absolutely correct. I have a dash mount multimeter measuring voltage, current and power. Current shunt is on the negative to ground wire of driver side alternator as this is the harder working alternator. I see 100+ amperes after startup, while glow plugs are cycling. It also shows...

I use citric acid to passivate stainless steel, it won't dissolve chromium unlike nitric acid. After using Blue Devil, I've had heater core and radiator leaks, all in the solder joints. Typical age issue. Oddly enough, the radiator fixed itself as no more leaks but it will get a proper...

Love it when a plan comes together..thanks for reporting your success, some of us need a bit of optimism.

Blue Devil cooling system flush is trisodium citrate. The sodium buffers the citric acid so it doesn't attack copper or brass but still solvates metal oxides like solder bloom, rust and corrosion. I used it a few years ago, the stainless steel thermostat became heavily covered in gray metallic...