Diesel Fuel Injection System Help Desk

[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.

[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.

[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

[daniel_garcia78]

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

sir mas ok po b tlaga yng crdi kaysa sa conventional diesel engine? nagbasa kasi ako ng review ng toyota's d4d sa hilux n innova..ang daming horror stories like engine knock, biglang humihinto yng makina tpos yng isang [papunatang baguio, nabitin yata..

plan kasi ng mom ko bumili ng innova..pro after reading the reviews..parang napa isip kmi..last sunday nagpunta kmi sa car show sa fort..nakita namin yng montero n san ta fe..ano kaya ang mas ok bilhin? sabi kasi ng danta fe agent, mas fuel eficient daw sila and combortable ang ride?
thanks

[Dieseldude]

sir mas ok po b tlaga yng crdi kaysa sa conventional diesel engine? Shempre naman, ok talaga ang CRDI engines.

nagbasa kasi ako ng review ng toyota's d4d sa hilux n innova..ang daming horror stories like engine knock, biglang humihinto yng makina tpos yng isang [papunatang baguio, nabitin yata.. Totoo yan.

plan kasi ng mom ko bumili ng innova..pro after reading the reviews..parang napa isip kmi..last sunday nagpunta kmi sa car show sa fort..nakita namin yng montero n santa fe..ano kaya ang mas ok bilhin? Basahin nyo ang mga posts sa Tsikot, tapos mag decide kayo. Mas mahal ang Montero at Santa Fe kaysa sa Innova.

sabi kasi ng santa fe agent, mas fuel eficient daw sila and combortable ang ride? Shempre sasabihin yan ng Santa Fe agent. Pero maaring totoo din ang sinasabi nya. Mabuti nga na nandito ang Tsikot para makapag survey kayo.

thanks

[egsunio]

Hi Dieseldude. Need your help. I was one of those who unfortunately got my Pajero submerged (near the roof for ~ 6 hrs) last September. Got it running after ~2 weeks but has had some problems once in a while. Last wednesday, after a few minutes of drive, the AT light started blinking so after driving for awhile to drop off my brother, i went back home. But i noticed that it was not shifting correctly already and it had a hard time getting up our driveway which has a small incline. I checked the ATF and it was full. I started it again, the blinking stopped and the power is back. Yesterday, we changed the ATF but didn't help much. The problem is intermittent. What should i check/do? Thanks.

[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....

[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 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

[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. 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

Sir bighorn po, 4JG2 engine.. bosch/zexcel VE pump po ung nakalagay.
check ko ung part number nya tapos i post ko dito.

Thanks..

[Dieseldude]

Sir bighorn po, 4JG2 engine.. bosch/zexcel VE pump po ung nakalagay.
check ko ung part number nya tapos i post ko dito.

Thanks..

[SIZE=3]4JG2 uses a rotary pump, either mechanical or electronic, depending on the model. Matutumbok natin ang pump pag napost mo ang part number.

[/SIZE]