Engine hard start

Ok I changed the fuel pump today. It seems to start a little better but not much at all. When key turned forward I get 59psi, then when I start motor, get 49-50psi, then when I turn off motor pressure drops to 10psi in 10 seconds. I am not sure how if able to isolate and test if the problem is a leaking injector or the regulator. With injectors costing $750.00 and a regulator costs $80.00, either job seems to be a full day event. If able to check either injectors and regulator so I can now for sure that would be great.

1994 Chevy Suburban, 6.5 turbo diesel, Automatic

I have a 94 chevy suburban, 3/4 ton, k 2500, 6.5 turbo diesel and for quiet a while the car begin starting very hard. If start, drive a while, stop the car and start again after a short period of time, will start ok, but if let it over night, starts very hard. We changed the ignition pump, no signs of improvment in starting, changed the fuel filter. The stating process right after that was a pain, looked like will never start again.
Few days ago, the engine stops while the car was driven and no way to start the car again. The car was took ( lifted on a platform) someplace and the next day, started. Worked ok ( well same hard starting problem) for about 2 days then after was stopped, couldn't start again and right at this moment we cannot start it anymore. Looks like the gas didn't came all the way thru the injectors or so. Did anyone have any idea what to do or what to try or what to check? Thanks in advance.

I have a 1996 suburban with a 5.7. It was really really really hard to start. It was also loosing oil pressure. I changed the oil pres. Sens. And I am still loosing press. To get the sens. Out I had to remove the dist. I made sure to mark the cap rotor and dist. When I re installed everything the engine started great and smooth. I went to drive it and it ran fine. Now when idle in gear it wants to stall. I have a cam pos. Sens. Code. Could the timing be off? I also changed the plugs and wires, cap and rotor. I did everything one at a time to make sure I did no mix anything up.

Delayed start/occational misfire/rough idle. Code1345a/changed crank and cam sensors/no change

I have trouble starting the battery is charge but when u start it it dies down

My diesel(overdrive) is missing at all speeds, jerks out of low, hung up in third for about thirty minutes, has intermittent voltage discharging with lights and blowers on, The engine may kill or hard start at times -hot or cold. Please help! Bill wacroc@consolidated. Net

If the fix works I will be glad to so testify and make a donation. Chev. Dealer and local mechanic have not figured it out! Bill wacroc@consolidated. Net

My truck has recently began starting HARD. Turning over slowly as if the battery might be dying. My question. When this happens the clock keeps reseting back to 12:00. Does this sound like a battery problem or possibly an alternator/starter problem?

Thank you for the input. I hope you are correct and it is just a battery issue.

Yes it's taking longer to start up