How to install fuel injection pump on 1995 dodge diesel

P0251 Injection Pump Fuel Metering Control "A" (Cam/Rotor/Injector)
P0252 Injection Pump Fuel Metering Control "A" Range/Performance (Cam/Rotor/Injector)
P1688 Metering Oil Pump Stepping Motor Circuit Malfunction
MB Star V2013.03

P0216 DTC - Injection Timing Control Circuit Malfunction and this means the diesel fuel injection pump has a timing failure. This could be that the injection pump timing needs adjusted OR the failure is internal to the injection pump and therefore non-adjustable.

NOTE: If your vehicle is a Dodge Ram with Cummins engine then be aware that fuel delivery problems frequently cause this code. Prolonged fuel delivery problems can cause injection pump failure!

Symptoms of a P0216 DTC may include:
Low power
Crank, but no start
Hard start
Displays an intermittent stumble or miss
Engine may start and then stall
Engine may appear to drive fine but surge at idle


The most frequent cause of this code is a bad injection pump due to poor fuel delivery. Fuel delivery problems could be:
A plugged diesel fuel filter
An in-tank blockage
Air in the fuel due to a cracked in-tank fuel ine above the fuel level
Bad transfer (lift) pump
Injection pump out of time


Possible Solutions: First, simply check if your injection pump timing is adjustable. If so, check the timing and adjust if necessary.

If you think that you may have a fuel delivery problem, then check the lift pump operation. On Dodge Ram with the Cummins engine, the lift pump should produce about 45 oz of diesel in 25 seconds of operation. This can be performed by disconnecting the fuel hose from the injection pump and pumping the fuel into an approved container. Bump the engine over but do not start it. Then the lift pump will operate for 25 seconds. If the fuel is aerated, then check/repair fuel line and recheck.

With the fuel hose connected the fuel pressure should be 10psi. If the fuel delivery tests fail, replace the diesel fuel filter and recheck.

If it still fails then verify there are no restrictions in the fuel tank

Then replace the lift (transfer) pump. IT SHOULD BE NOTED that if this code surfaced after a routine fuel filter replacement or if you have any of the above symptoms after routine fuel filter replacement, then suspect the fuel transfer pump. This occurs because even a weak transfer pump can still provide enough fuel for the engine to run. But when the fuel system\'s prime is lost due to fuel filter replacement, it may not restart again without fixing the fuel delivery problem.

If you found your injection pump to be bad, the lift pump should be checked for operation to protect the new injection pump. This is because weak or low output from lift pump are common cause of injection pump failure. There are some aftermarket kits that can be purchased to warn the operator when the fuel pressure/volume drops to level that could damage the injection pump.

Hope this helps (remember to rating this free answer and leave a testimonial comments).

better chec the wiring or connections 1st--pull the plug from the pump and inspect for flaws and corrosion then plug back in--pump itself can be tested--the fuel injection pump in engine area may have issues

This usually happens when the lift pump gets worn and fuel pressure drops below 7lbs and the injection pump has to work harder by pulling in the fuel and will destroy the pump,your is probably a vp44 fuel injection pump it needs replaced and they are expensive 1200.00+ but also change the lift pump or change to a fass fuel system,if the lift pump went out and you replace the injection pump it will ruin it in a short time.
The injection pump is not an easy job to change or for a novice mechanic as it has to be set in time with the engine at top dead center,and then the whole fuel system needs to be bleed of air.

What are you priming it with?

Hey bro, your diesel pump might be on the way out but here are some things to check and do and see if they help.

Replace the hoses going from the pump to the diesel filter with new ones.

Use fuel injector type clamps, NOT gear clamps they don't tighten enough to stop air not getting in.

Change the diesel filter, and make sure the drain on the bottom of it, if it has one which most do, is nice and tight.

Air bubbles in the injection lines are usually a sign of a weakening injection pump but I ran mine like that for a long time, the air works it's way through. Are you leaking any diesel? Maybe check the returns to the tank. Cheers bro.

those year trucks have bad lift pumps on the diesel engine. it is located near the fuel filter. they are also known for starving the injecter pump for lubrication oil due to the pumps low capacity. it is now recomended that an in the tank pump change over kit be installed

take it to a diesel injection shop. the high end oil pump is out in the injection pump.

it could be that one of the injectors is bleeding off pressure not allowing enough fuel pressure to start. the 5.9 and 6.7 cummins need at least 2000 psi to start

is it a diesel or a gasser ??? and what pump is bad lift pump or injection pump ?