Diesel Fuel Injection System Help Desk

[Dieseldude]

so even if bago ang mga nozzle tips ko and bago ang air filter ko and i had my injection pump calibrated 5months ago at mausok pa upon pedaling to a higher speed...i need to have my injection pump re calibrated again? Yes, kasi yan ang nakikita kong problema ng car mo.

sabi po kasi nung pinuntahan kung shop kung saan nilagay ung nozzle ko baka daw hindi napalitan ng bagu ang mga delivery valve ba un or distribution valve.... Sa palagay ko, wala sa delivery valve ang problem mo. Calibration adjustments ang kelangan ayusin.

so ung sinasabi niyo po sir na injection pump or injectors is the whole assy ng injection pump ko dipo ba mahal un its like buying a new one? TIA, ilang araw ko napo kasing iniicip ito, and napapagastos ako, like if i bring it to the calibration shop irerecalibrate nanaman gastos nanaman. Mag claim ka ng warranty sa shop na dating gumawa ng pump mo para di ka magkagastos ulit. Authorized Bosch diesel workshop ba ito?

[josef_22]

diko po alam sir, medyo nabadtrip nga ako sa 1st calibration shop na pinuntahan ko kasi ung nozzle replacement na nilagay nila ay hindi kapares nang luma na inalis as in hindi nia kapares ng code prati akong bumabalik nun kexo inaadjust ang minor but they never told me na iba palang code yun, nalaman ko lang yun when i had a a second opinion sa ibang calibration shop 2 weeks after my calibration and repalcement ng nozzle, sa second opinion ng shop na pinuntahan ko ginawa nila binalik ung luma and nilinis, then umayus pero naging mausok din after wards, sabi nung 2nd opinion ko kailanagan ng palitan nozzle so this month lang kakabili ko lang ulit ng bago,,, then pinalagay ko ulit sa 3rd shop na nagcacalibtrate kasi medyo mahal ang singil dun sa 2nd opinion eh.. nways salamat sir. ill just have it re calibrated and have some few adjustment, specifically what adjustment should be done naman in your own opinion?

[GTi]

Hello there sir! I am asking for a friend to whom we sold our 2002 4JX1 Trooper. Not long after we sold him the car, nahalata niya na matindi ang usok. So far I have never seen the Trooper emit so much smoke in all the eight years it has been with us. It is a very well maintained car. Besco 10W30 ang motor oil na ginagamit as prescribed, nilinis na ang air filter, palit na ang oil filters, palit na ang motor oil... Pero wala parin. Using Shell V-Power Diesel eases the problem a little bit pero napakausok parin. The injectors and throttle position sensor have already been replaced free of charge through Isuzu's recall. Also he complains na pumapalya daw ang makina at 1500-1800rpm, minsan daw near total loss of power at that rpm range. I'm suspecting that the EGR is the culprit. What do you think? If it really is the EGR which is the culprit can you prescribe where it can be fixed? Allergic kasi sa casa yung kaibigan ko eh. And nakakatakot idala yung ganong klaseng kotse sa kung saan saan na calibration center.

[Dieseldude]

Hello there sir! I am asking for a friend to whom we sold our 2002 4JX1 Trooper. Not long after we sold him the car, nahalata niya na matindi ang usok. So far I have never seen the Trooper emit so much smoke in all the eight years it has been with us. It is a very well maintained car. Besco 10W30 ang motor oil na ginagamit as prescribed, nilinis na ang air filter, palit na ang oil filters, palit na ang motor oil... Pero wala parin. Using Shell V-Power Diesel eases the problem a little bit pero napakausok parin. The injectors and throttle position sensor have already been replaced free of charge through Isuzu's recall. Also he complains na pumapalya daw ang makina at 1500-1800rpm, minsan daw near total loss of power at that rpm range. I'm suspecting that the EGR is the culprit. What do you think? This is possible, but we cannot be sure until the car is scanned. Tech II is the correct scan tool for the Isuzu Trooper.

If it really is the EGR which is the culprit can you prescribe where it can be fixed? Allergic kasi sa casa yung kaibigan ko eh. And nakakatakot idala yung ganong klaseng kotse sa kung saan saan na calibration center. I will PM you....

[GTi]

Hello there sir! I am asking for a friend to whom we sold our 2002 4JX1 Trooper. Not long after we sold him the car, nahalata niya na matindi ang usok. So far I have never seen the Trooper emit so much smoke in all the eight years it has been with us. It is a very well maintained car. Besco 10W30 ang motor oil na ginagamit as prescribed, nilinis na ang air filter, palit na ang oil filters, palit na ang motor oil... Pero wala parin. Using Shell V-Power Diesel eases the problem a little bit pero napakausok parin. The injectors and throttle position sensor have already been replaced free of charge through Isuzu's recall. Also he complains na pumapalya daw ang makina at 1500-1800rpm, minsan daw near total loss of power at that rpm range. I'm suspecting that the EGR is the culprit. What do you think? This is possible, but we cannot be sure until the car is scanned. Tech II is the correct scan tool for the Isuzu Trooper.

If it really is the EGR which is the culprit can you prescribe where it can be fixed? Allergic kasi sa casa yung kaibigan ko eh. And nakakatakot idala yung ganong klaseng kotse sa kung saan saan na calibration center. I will PM you....

I believe you have encountered quite a number of smoky Troopers before, right? What is usually the problem? Care to share a bit?

[Dieseldude]

I believe you have encountered quite a number of smoky Troopers before, right? What is usually the problem? Care to share a bit?

1) Blocked air filter
2) Blocked CAT
3) Faulty EGR
4) Faulty injectors
5) Faulty turbo

[Ry_Tower]

Dieseldude how long should I change fuel filter if I travel 10K a year and use bosch fuel filter. Been hearing good filtration from a baldwin filter, kaya kaya ng 20,000 or every 2 years change fuel filter if baldwin gamitin ko?

[GTi]

Hmm~ The car is only around 75tkms old. Air filter has been cleaned, injectors have been replaced around 20tkms ago, turbo has also been replaced a bit earlier than that (swindled, it could still be fixed! ). That'll leave us with the EGR and CAT I suppose. What exactly is the CAT again?

[Dieseldude]

diko po alam sir, medyo nabadtrip nga ako sa 1st calibration shop na pinuntahan ko kasi ung nozzle replacement na nilagay nila ay hindi kapares nang luma na inalis as in hindi nia kapares ng code prati akong bumabalik nun kexo inaadjust ang minor but they never told me na iba palang code yun, nalaman ko lang yun when i had a a second opinion sa ibang calibration shop 2 weeks after my calibration and repalcement ng nozzle, sa second opinion ng shop na pinuntahan ko ginawa nila binalik ung luma and nilinis, then umayus pero naging mausok din after wards, sabi nung 2nd opinion ko kailanagan ng palitan nozzle so this month lang kakabili ko lang ulit ng bago,,, then pinalagay ko ulit sa 3rd shop na nagcacalibtrate kasi medyo mahal ang singil dun sa 2nd opinion eh.. nways salamat sir. An authorized diesel workshop will know the correct nozzle part number and pressure setting for your car. They have the necessary technical information. They can even check if your originally installed nozzles are correct. It is possible that your nozzles were previously replaced before.

ill just have it re calibrated and have some few adjustment, specifically what adjustment should be done naman in your own opinion? Maximum (full load) fuel setting. This information is stated on the calibration specifications of your injection pump.

[josef_22]

anyway sir merun ba kaung alam na shop na pwede kong puntahan na maayus? TIA... by the way anong ibig sabhin ng EGR? hehe.. di kasi ako familiar masyado sa mga terminology eh..

[Dieseldude]

anyway sir merun ba kaung alam na shop na pwede kong puntahan na maayus? TIA... by the way anong ibig sabhin ng EGR? hehe.. di kasi ako familiar masyado sa mga terminology eh..

EGR = Exhaust Gas Recirculation: This device improves emissions....

[zecand]

sir i replaced my air filter (toyota OEM) today. biglang nagkaron ng itim na usok while crusin at 70kph. pag 50 under 2k rpm wala.. pag pa-akyat na ako ng 60-70 at 2.5k rpm un na.. meron na sir.
ano po kaya ang problema.

[Dieseldude]

sir i replaced my air filter (toyota OEM) today. biglang nagkaron ng itim na usok while crusin at 70kph. pag 50 under 2k rpm wala.. pag pa-akyat na ako ng 60-70 at 2.5k rpm un na.. meron na sir.
ano po kaya ang problema.

Ganito na ba ang problem bago ka nagpalit ng air filter?

Ano ang make & model car mo?