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Hi, It depends on what the application is, here is a listing of all the VP44 pumps available on our website oregonfuelinjection.com/?productSearch=&s=0470506&post_type=product Or for Dodge applications only oregonfuelinjection.com/?productSearch=&s=pxa0470506&post_type=product

The function trimmer controls the timing advance. Light load advance is just that, it controls the timing advance at light load. The latch valve cut-out has to do with starting fuel delivery control. Mark

@@oregonfuelinjection thanks One questions? Do you have course of this type the pump? Do you have number whatsapp?

@@Geovanny-vl7qd Delphi factory training is only available to Delphi Authorized Service Dealers, with the proper equipment. We do not offer any training for this pump, we do not have a watsapp? account.

@@oregonfuelinjection ok thanks

@@oregonfuelinjection hello Friend can you help me with a priblem the pump dpa? The dosificación valve is lock Sometimes accelerate another no I put valve and throttle rod new and it is same What can i do ?

@ohn7367 You did fuel up with diesel correct (sorry we see this often), and you have the FASS pump working now, correct? Do you have any codes? It is possible that the advance area could be damaged from air in the fuel when the FASS pump quit working. Give us a call for additional diagnostics or take a look at our online diagnostics oregonfuelinjection.com/services-repair/diesel-diagnostics-repair/dodge-diesel-diagnostics/#98

The pump is limited on how much you can set them up. We normally set to top of specification. If you know of a different pump part number for the same engine combination, installing a different pump may be a way to get more power. However, we do not have a listing of performance increases and there is not an easy way to figure it out for a single job. Mark

We replace both the housing and the timing piston, with the latest style.

The new diaphragms are thicker than the old style and have a "plastic" material on one side. They are a pulsation damper to reduce the pulsations from the charging/discharging from the fuel solenoid valve. Aeration in the fuel causes more pulsations, which would cause the early style (thinner) diaphragms to crack. This would cause hard starting, which would usually be worse when hot. The overflow valve (check valve) is designed to hold pressure inside the pump and allow fuel to return to the tank for cooling of the pump. It is not a positive seal and not designed to keep fuel from draining back.

1. Excessive lift pump/supply pump pressure can cause problems with starting. The higher the lift pump pressure, the higher the housing pressure is, which can result in reduced fuel delivery at cranking. 2. The old style diaphragm cracks due to severe fuel pressure pulsations, caused by aeration in the fuel. The new style diaphragm is thick and more robust and normally does not crack. However, with severe fuel pulsations, it can damage the o-rings that seal it. Extreme tuning can also cause the pulsation dampener to wear the o-rings due to the stress of absorbing the fuel pressure discharge of each injection. 3. 15 - 18 psi is plenty of fuel pressure, unless you have an extreme demand. As long as it stays above about 4-8 psi under hard acceleration. 4. On the test stand, the pump is feed 30 Kpa supply pressure, which is just under 5 psi. The supply pump internally in the injection pump creates enough pressure to open the overflow valve and have plenty of return fuel for cooling. Running less than 1/4 tank of fuel in hot weather can create heat issues, because you have lost your "heat sink" by having less fuel to dissipate the heat from the return fuel.

@@oregonfuelinjection thanks for the info, i sent an email as im from Canada

There is a port above the fuel delivery outlets, where transfer pump pressure is measured, on the test stand. The case - or housing pressure is not measured however, the return volume from the pump is measured during testing. "Hitting the regulator" would increase transfer pump pressure. If the transfer pump pressure is too far out of range, it will affect the timing advance.

Hello Bruce, The timing blocking procedure is performed by the test stand, and then the pump is locked in time. There are 29 different keys to adjust for minor tolerance differences with pump components. We select the exact key so the key alignment tool aligns with the hole in the housing. If the pin does not engage properly, then we change the key (different offsets) until it does. This properly sets the base timing.

Thank You

Yes, we should be able to take care of those for you.

@@oregonfuelinjection That’s awesome.

Thank You

Thank You

The latching valve locks out the advance and controls the torque trimmer during starting for the correct fueling. The torque trimmer is used to control starting fuel, midrange fuel control and the fuel delivery curve. Thanks, Mark

Thank you

@@oregonfuelinjection Donde puedo comprar las herramientas para comprobar estás bombas.....de antemano muchas gracias

We are not having any issues with over temp, you would need to contact Bosch

Please refer to the description "Testing Common Rail Diesel Injectors on the Bosch EPS205 Test Stand" Thank You

Thank You Kira