Swap electronic diesel pump with mechanical on CD20E

[Angeldust]

My car is now in limp mode(Nissan N15 CD20E) have check engine light and the car stall when i push accelerator pedal.Now i think to swap electric diesel pump with simple mechanic pump(i have it one).What are my possibilities to do this swap?My car has ecu on board and air condition.Please your sugestions friends.

[Xulfiqar]

This pump will directly bolt on to your engine and you can then disconnect the wiring from the engine, You might need to fiddle with the A/C rpm sensor wiring to make it work, anyway, before you mount this pump make sure that the cold start device, (item with 2 coolant pipes) is actually working, try pouring boiling water through it and watch it extend,. when it extends the rpm drop to normal.

[Angeldust]

This pump will directly bolt on to your engine and you can then disconnect the wiring from the engine, You might need to fiddle with the A/C rpm sensor wiring to make it work, anyway, before you mount this pump make sure that the cold start device, (item with 2 coolant pipes) is actually working, try pouring boiling water through it and watch it extend,. when it extends the rpm drop to normal.

The csd device is working after deep clean with acid,extend about 2-3mm.I have throttle cable and pedal,ruber hose for csd.Need some work to fit csd hoses to water line.I'll try it from monday.Thanks!

[Xulfiqar]

the csd should move about 5mm at full stroke.

[Angeldust]

the csd should move about 5mm at full stroke.

Ok,i'll clean it again tomorrow!Thanks again!

[Angeldust]

Try it to fit the pump today,its bolt on but dont fit due the presence of shock absorber on the top of the pump.The question is:If i remove it what's hapen?

[Xulfiqar]

that absorber is the dashpot, you can remove it, it will only affect how softly the pump goes back to idle speed.

[Angeldust]

Thats the place.

[Xulfiqar]

before you install the pump make sure that you know where the pump cyl 1 timing is, on the pump pulley you may notice 2 or three marks, it would also have 3 woodruff keyways to mount the pulley - when you fit it, dont install the belt, spin the pump to see when it injects from port for cyl 1 - now inspect the pulley - it should align to a line at the side of the mounting plate, This is your TDC mark for the pump, paint a yellow dot on both so you dont get confused.

[Angeldust]

before you install the pump make sure that you know where the pump cyl 1 timing is, on the pump pulley you may notice 2 or three marks, it would also have 3 woodruff keyways to mount the pulley - when you fit it, dont install the belt, spin the pump to see when it injects from port for cyl 1 - now inspect the pulley - it should align to a line at the side of the mounting plate, This is your TDC mark for the pump, paint a yellow dot on both so you dont get confused.

Camshaft is at TDC and pump pulley was 3 a clock.Pulley is with only 1 woodrof key(have another with 2 keys A and B) and belt is genuine with 2 white marks between 31 tooths.Thanks friend!

[Xulfiqar]

you're welcome

[Angeldust]

Today pump fited after removing shock absorber.Tomorrow i"ll try it to start the engine.

[Angeldust]

today i started the engine very easy.Need fine adjustment like dial gauge but i dont have one and here the mechanic work by ear.the car has little stalling when i change gears.No visible smoke only when revved hard.Is little retarted Xulfiqar?.

[Xulfiqar]

remove and test injectors, retarded injection will cause white unburnt fuel. If any injector is acting stupid that cylinder can act retarded or advanced depending on whats wrong with it, meanwhile can you get hold of some diesel purge. Run the engine on it,.

[Angeldust]

remove and test injectors, retarded injection will cause white unburnt fuel. If any injector is acting stupid that cylinder can act retarded or advanced depending on whats wrong with it, meanwhile can you get hold of some diesel purge. Run the engine on it,.

maybe im wrong for retarted pump.i have no sign of white unburnt diesel.Why stalling my engine?

[Xulfiqar]

does the engine fire regular when you hold the accelerator?

[Angeldust]

No missing there,just say that i bolted the pump without any adjustment.I"ll check injectors for breaking presure beacouse are programed for turbo running(150 bar).Must be between 120 130 bar as you told me.

[Angeldust]

does the engine fire regular when you hold the accelerator?

Yes,very normal.

[spectra]

Use diesel purge or similiar cleaning liquid. Pump might be dirty from iniside or injectors might have accumulated dust during the time they remained open.

[imranbhatti]

@Angeldust

I used to have B14 CD20 & that time i wish to have Electronic pump & accessoires to convert it to CD20E but u r doing it other way, have u try to daignose Check engine light issue with ur existing setup ? or straight away replacing the Fuel Pump wiht mechanical 1?