7 3 Idi Fuel Pump Pressure

Electrical fuel system fuel tanks injector pump injectors.

7 3 idi fuel pump pressure. The major components of the system are the lift pump filter head and filter fuel injection pump fuel. Basically put it in the. Its losing prime after sitting maybe the check valve in the mechanical fuel pump is bad or a hole in the line. Without proper monitors the engine can damage internal parts from the excess heat.

Transfer pump pressure is taken at 3300 rpm and should be 90 110 psi for 6 9. The fuel injection system on the classic 6 9 and 7 3 liter international navistar engine used in diesel fords from the 70s to the early nineties is relatively simple but some confusion still remains about how it functions. 7 3 idi and 6 9 idi fuel and air intrusion. I recommend getting a pyrometer before doing this so you don t burn up the motor.

Have an older 7 3 idi i m posting this question here as there aren t alot of viewers in that forum and i m hoping someone has some input. Operation of the 6 9 and 7 3 international navistar idi fuel system. Don not attempt to turn up the fuel on a 7 3 injector pump while the engine is hot or around open flame. Its a two tank system with a heated tank in the bed as well as the two diesel tanks on the truck.

Electric fuel pump duration. How to turn up the fuel on a 7 3 idi this also works on a 6 9 idi. I have just converted my 7 3 idi to run on wvo. 90 120 psi for 7 3.

Chad frank 8 275 views. If i m going to be completely honest i ve always been skeptical of the assertion that lift pump fuel pressure impacts the timing of the injector pump. Exhaust gas temperatures egt can rise dramatically after the fuel pressure has been increased. I seem to recall that the mechanical fuel pump only pumped around 7 8.

7 3 idi fuel pressure hey had a fuel problem for a while now going up hills or accelerating hard the truck is starved of fuel and the filter light comes on and stays on until i back off then goes out again everything from the pickup pipe in the tank right up to the ip is brand new including filer and housing i used an electric facet 4 5 to 7psi 34gph i m thinking this pump isn t quiet big. If the engine won t start all other checks are normal and there is no air inside the injection pump chances are the transfer pump is not producing enough pressure to start the engine. This pump has a pressure adjustment on it but it only goes down to 15 psi. Anyway some people have told me they ve put in an inline electric fuel pump to solve the problem has anyone ever done this.