1995 Diesel Suburban fuel obstruction

Have to service these a lot it's the MAP sensor ( manifold absolute pressure sensor ) this should fixya.

Sounds almost like a fuel pressure regulator. It is located at the begining of the fuel rails, right where the gas comes to the motor. It controls the amount of fuel going to the motor, and could cause injectors to act funny, and flood the motor during acceleration.

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crack open 2 lines as a time aand crank the engine 4-5 revolutions till fuels dribbles from them the retighten and do 2 more till all are bled than start it

check air and fuel filters most likely the fuel filter and possible tune-up

This is very important for Audi 1.9 TDI engine: IT IS FORBIDDEN TO RUN WITHOUT DIESEL FUEL IN RESERVOIR !!!
This type of engine is equipped with pump-nozzle injectors which develop up to 2050 bar injection pressure !
Remove the fuel filter, fill up with diesel fuel and put in place. After that try to start the engine with accelerator pedal to the floor. Heed of electric starter motor temperature and battery status! After 40 - 50 sec. of start attempting wait for 1 - 2 minutes for battery and electric starter motor revival. After few starting attemptions the engine must start.

That was my first thought as well... replace the fuel filter to increase fuel flow to keep up with the higher speeds and acceleration.

sounds like the fuel pressure regulator but first try new fuel filter and maybe clean spark plugs and reset them

I believe you have a fuel regulator weak or dirty injectors.
Try turning the key to the "on" position ( do not try and start) wait until fuel pump stops running (3-5 seconds or so ), turn the key off and immediatly repeat for 3 cycles. On the 4th key rotation, start the vehicle. Does it seem to start up faster?
If so, the regulator is weak, however, the fuel pump does have a check valve in it to prevent fuel from leaking back into the pump and maintain line pressure.
Try the diagnostic proceedure above first and we can go from there.
Good luck, let me know.
Regards,

Put a diesel additive in and see if that helps.

Hi, I had the same fault on my Laguna 1.9dci. you have a faulty injector. possible one or more. changed one on mine and it got better but then a second had to be done, now problem completely gone.