Diesel Fuel Injection System Help Desk

[Dieseldude]

hi dieseldude.. do you have a shop? whats the address?
Yes. I will send you a PM.

a mechanic that i asked said that probably its the nozzle, it releases more fuel than it can burn. This will have to be validated since you mentioned that white smoke occurs only when your engine is cold. If it's a nozzle problem, smoke will always be there, cold or hot.

if ever its the nozzle, more or less how much does it cost? and how long will it take to replace? PM you.

sorry kinda tight on the budget and i have to see if i can afford it at this time. if ever i don't have it fixed whats the consequence? Nothing. I don't think progressive damage will happen.

Thank you very much. You're welcome.

[anthon05]

hi master dieseldude.... the smell of unburned fuel is continous even if engine is running for quite sometime . the white smoke i think is continuous also but not

more than when its cold.i'm just worried that it has affected my fuel efficiency and power. i will wait for your address so i can visit you sometime.

thank you very much ..appreciate your help

[kits11326]

sir, my problem is this. has my first gen 4x4 ranger tuned to the last bit i know to make it road worthy, but the thing is when we test it for a run to see it's condition, we nearly hit 150kph. It stayed and stayed and stayed in that speed as if i was not flooring the pedal already.

question: Is there something wrong with my injection pump? pls. help. thank you.

[Dieseldude]

sir, my problem is this. has my first gen 4x4 ranger tuned to the last bit i know to make it road worthy, but the thing is when we test it for a run to see it's condition, we nearly hit 150kph. It stayed and stayed and stayed in that speed as if i was not flooring the pedal already.

question: Is there something wrong with my injection pump? pls. help. thank you.

I don't get it. Was the engine running at maximum rpm even without your having to step on the accelerator pedal?

[kits11326]

sir, i can't go all out.. that's the problem.

it's as if i have a speed limiter.

[Dieseldude]

sir, i can't go all out.. that's the problem.

it's as if i have a speed limiter.

Check accelerator pedal travel, cables, and linkages. Make sure that the injection pump's throttle lever is at maximum position when pedal is floored. Check/replace air and fuel filters.

But 150kph is not bad. What speed are you aiming to attain?

[kits11326]

i was aiming for 170kph or more, but i was disappointed. i have a new K&N drop in filter. How will i know if my Fuel Filter is defective? i will do what you've. Thank's for the info.

[kits11326]

i'll do the things you suggested Dieseldude. =)

[Dieseldude]

i was aiming for 170kph or more, but i was disappointed. i have a new K&N drop in filter. How will i know if my Fuel Filter is defective? i will do what you've. Thank's for the info.

I don't think your car will hit 170kph. Maximum engine rpm and vehicle speed is dependent on injection pump calibration. The pump automatically reduces fuelling at a specified rpm to protect the engine from exceeding its design rpm. This is called governor cut-off.

K&N filter will not help when the injection pump is at governor cut-off because fuelling is purposely being reduced.

[Dieseldude]

i was aiming for 170kph or more, but i was disappointed. i have a new K&N drop in filter. How will i know if my Fuel Filter is defective? i will do what you've. Thank's for the info.

Replace your fuel filter. It's not expensive anyway.

[Dieseldude]

From what I have seen, Denso seemingly has a design defect on the suction control valves of their first generation supply pumps. This has caused a lot of problems for engine manufacturers which use the same system.

I assume that it is for this reason that Denso has come up with a redesigned supply pump with an improved suction control valve.

I believe that local car distributors, with the aid of government should compel Denso to replace these problematic pumps with their upgraded pumps free of charge, and whether the vehicle is in or out of warranty. This is how consumer protection works in other countries.

[Horsepower]

Hi Dieseldude,

Would you know what Common-Rail system Nissan Navara has in its motor? Have you encountered a unit in your shop(s) that belches smoke? Is it completely rectifiable? What could be causing it?

Thanks.

[anthon05]

hi dieseldude,

In the company that I work for we have an Isuzu IPV 4ja1 engine. mileage is 80k. emission is normal. just past emission test lately.

Driver said the only problem is whenever he's going on an upward slope engine

shuts down and also whenever he steers fully ( todo kabig when maneuvering). if he starts again he has to turn the idle knob up so engine will run continuosly.

what do you think is the problem?

thank you dd.

[batosai]

From what I have seen, Denso seemingly has a design defect on the suction control valves of their first generation supply pumps. This has caused a lot of problems for engine manufacturers which use the same system.

I assume that it is for this reason that Denso has come up with a redesigned supply pump with an improved suction control valve.

I believe that local car distributors, with the aid of government should compel Denso to replace these problematic pumps with their upgraded pumps free of charge, and whether the vehicle is in or out of warranty. This is how consumer protection works in other countries.

Hi sir Jake,

Diba TOYOTA and MITSUBISHI are the one equip with this Pump?

Ask ko na din how would you know if mdyo sakal (under fuel delivery) ang pag calibrate ng isang pump? Mdetect po ba ito kahit hindi i pull out ang Pump?

Thanks,

Jun

[Dieseldude]

Hi Dieseldude,

Would you know what Common-Rail system Nissan Navara has in its motor?
Navarra uses Denso.

Have you encountered a unit in your shop(s) that belches smoke? No.

Is it completely rectifiable? What could be causing it? I don't know as we havent worked on a Navara yet. Being quite new in the market, most of these would still be under warranty.

Thanks. You're welcome....

[Dieseldude]

hi dieseldude,

In the company that I work for we have an Isuzu IPV 4ja1 engine. mileage is 80k. emission is normal. just past emission test lately.

Driver said the only problem is whenever he's going on an upward slope engine shuts down and also whenever he steers fully ( todo kabig when maneuvering). if he starts again he has to turn the idle knob up so engine will run continuosly.

what do you think is the problem?

thank you dd.

Blocked fuel filter or faulty injection pump. Check fuel filter first.

[Dieseldude]

Hi sir Jake,

Diba TOYOTA and MITSUBISHI are the one equip with this Pump? Depende kung anong model ng sasakyan at makina ang tinutukoy mo.

Ask ko na din how would you know if mdyo sakal (under fuel delivery) ang pag calibrate ng isang pump? Kung walang bara ang fuel filter, tank, and lines, ang mga palatandaan ng sakal ay low power, slow acceleration, at walang kausok usok. Kelangan din natin yung konting smoke sa acceleration dahil ito ang extra fuel na nagbibigay ng power.

Mdetect po ba ito kahit hindi i pull out ang Pump? Pwede madetect ito kung old style rotary pump. Hindi it madetect kung common rail ang system.

Thanks, You're welcome.

Jun

[batosai]

Hi sir Jake,

Diba TOYOTA and MITSUBISHI are the one equip with this Pump? Depende kung anong model ng sasakyan at makina ang tinutukoy mo. Toyotas D4D and MITSUBISHI DiD

Ask ko na din how would you know if mdyo sakal (under fuel delivery) ang pag calibrate ng isang pump? Kung walang bara ang fuel filter, tank, and lines, ang mga palatandaan ng sakal ay low power, slow acceleration, at walang kausok usok. Kelangan din natin yung konting smoke sa acceleration dahil ito ang extra fuel na nagbibigay ng power. Sir meron naman konti usok pero parang mabagal pa din ang acceleration

Mdetect po ba ito kahit hindi i pull out ang Pump? Pwede madetect ito kung old style rotary pump. Hindi it madetect kung common rail ang system. Pano po ma detect un rotary type naman po pump ko.

Thanks, You're welcome.

Jun

[Dieseldude]

Hi sir Jake,

Diba TOYOTA and MITSUBISHI are the one equip with this Pump? Depende kung anong model ng sasakyan at makina ang tinutukoy mo. Toyotas D4D and MITSUBISHI DiD. Denso ang system ng D4D and DiD.

Ask ko na din how would you know if mdyo sakal (under fuel delivery) ang pag calibrate ng isang pump? Kung walang bara ang fuel filter, tank, and lines, ang mga palatandaan ng sakal ay low power, slow acceleration, at walang kausok usok. Kelangan din natin yung konting smoke sa acceleration dahil ito ang extra fuel na nagbibigay ng power. Sir meron naman konti usok pero parang mabagal pa din ang acceleration

Mdetect po ba ito kahit hindi i pull out ang Pump? Pwede madetect ito kung old style rotary pump. Hindi it madetect kung common rail ang system. Pano po ma detect un rotary type naman po pump ko.

[SIZE=2]Kunin mo yung part number ng pump tapos ipost mo. Ano ba ang car mo?
[/SIZE]
Thanks, You're welcome.

Jun

[anthon05]

Blocked fuel filter or faulty injection pump. Check fuel filter first.

Thanks dieseldude. . i told the driver to replace fuel filter.

by the way for 4ja1 engines whats the brand of the injection pump used?

Does your shop specialized on 4ja1 injection pump also? aside from bosch