Diesel Fuel Injection System Help Desk

[Dieseldude]

sir dieseldude,
not sure if knocking sound came from all cylinders.
what test need to be done in order to check if the sound came from cylinders?
will try to drop by in your place for proper diagnosis..

This is often ear-detected by a trained mechanic.

[nitram]

This is often ear-detected by a trained mechanic.

ok will try to check if it came from all cylinders.
will keep you posted.

thanks.

[rdt7G]

any idea where i can buy a compression gauge? and how much would it cost?
thanks!

- stanley comp tester are available at ACE hardware. Got mine for less than 2k ata.

[batosai]

Hi Sir Dieseldude,

Ask ko lang po, ano po kaya cause kung bakit nag kaka oil ang air filter element ng sasakyan ko, nilinis ko ng ung buong air duct before dumating sa air filter baka kasi dun galing pero ganun pa din may mga oil residue pa din. anu po kaya ang cause nito, ang bilis kasi dumumi ng ng air filter pag mdyo basa.

Tnx

[Dieseldude]

Hi Sir Dieseldude,

Ask ko lang po, ano po kaya cause kung bakit nag kaka oil ang air filter element ng sasakyan ko, nilinis ko ng ung buong air duct before dumating sa air filter baka kasi dun galing pero ganun pa din may mga oil residue pa din. anu po kaya ang cause nito, ang bilis kasi dumumi ng ng air filter pag mdyo basa.

Tnx

Hindi ko alam ang ride mo. Pero ang madalas na dahilan nito ay yung blowby gasses na nanggagaling sa PCV. Binabalik ito sa intake system ng engine to reduce emissions.

Pwede mong baguhin ang location ng hose....... instead of the connection before the air filter, ilipat mo ito sa tube between the air filter and the turbo's air intake.

[ExROLLA]

Hindi ko alam ang ride mo. Pero ang madalas na dahilan nito ay yung blowby gasses na nanggagaling sa PCV. Binabalik ito sa intake system ng engine to reduce emissions.

Pwede mong baguhin ang location ng hose....... instead of the connection before the air filter, ilipat mo ito sa tube between the air filter and the turbo's air intake.

[SIZE=3]Dieseldude is correct... check your PCV... ganyan ang corolla ko dati... sabi blow by na ang engine, but replacement of the PCV lang pala ang solution.[/SIZE]
[SIZE=3][/SIZE]
[SIZE=3]by the way, may PCV ba ang ISUZU 4ja1 engine?[/SIZE]
[SIZE=3] [/SIZE]

[vyn300d]

hi sir dieseldude. may problem ako regarding my pajero gen 3 (aka palaka-local). at 2000 to 2500 rpm (high speed) nararamdaman ko na may loss of power then bigla ulit magboboost. everytime the loss of power occurs, it emits white smoke tapos nawawala ulit when the power kicks in. pls. take note naka-steady lang po ang paa ko sa accelerator. so i brought it to the casa. they checked it with MUT and found out an error with the throttle control solenoid. but the car's history shows that it was just replaced last december. so they erased the error and it never came back after the test drive. on my way back to my province, i experienced it again only this time it emits black smoke during the loss of power. what could be the problem here? thanks in advance.....

[batosai]

Hindi ko alam ang ride mo. Pero ang madalas na dahilan nito ay yung blowby gasses na nanggagaling sa PCV. Binabalik ito sa intake system ng engine to reduce emissions.

Pwede mong baguhin ang location ng hose....... instead of the connection before the air filter, ilipat mo ito sa tube between the air filter and the turbo's air intake.

Sir isuzu bighorn w/ 4JG2 engine.. Ung PCV is the breater diba po? its located naman na after the air filter and mdyo malayo ang distance sa filter, and nag install na din po ako ng oil catch can sa breater. Ang isang napansin ko ay may isang maliit na hose (size ng Vacum hose sa EGR valve) install from the top of the housing ng air filtter na connected sa turbo, ok lng po ba na temporarily removed this hose to see if it's the cause or it will harm the turbo if removed?

Thanks

[Dieseldude]

hi sir dieseldude. may problem ako regarding my pajero gen 3 (aka palaka-local). at 2000 to 2500 rpm (high speed) nararamdaman ko na may loss of power then bigla ulit magboboost. everytime the loss of power occurs, it emits white smoke tapos nawawala ulit when the power kicks in. pls. take note naka-steady lang po ang paa ko sa accelerator. so i brought it to the casa. they checked it with MUT and found out an error with the throttle control solenoid. but the car's history shows that it was just replaced last december. so they erased the error and it never came back after the test drive. on my way back to my province, i experienced it again only this time it emits black smoke during the loss of power. what could be the problem here? thanks in advance.....

EGR maybe?

[Dieseldude]

Sir isuzu bighorn w/ 4JG2 engine.. Ung PCV is the breater diba po? Correct

its located naman na after the air filter and mdyo malayo ang distance sa filter, and nag install na din po ako ng oil catch can sa breater. Ang isang napansin ko ay may isang maliit na hose (size ng Vacum hose sa EGR valve) install from the top of the housing ng air filter na connected sa turbo. At what part of the turbo is this hose connected to? You may have your hose connections mixed up. Do you see oil or boost pressure coming out of this hose while the engine is running? (at idle and at maximum rpm)

ok lng po ba na temporarily remove this hose to see if it's the cause or it will harm the turbo if removed? I don't think it will harm your turbo.

Thanks

[vyn300d]

EGR maybe?

ok lang din po ba na tanggalin na ang EGR on crdi engines?

[chilledoxygen]

Sir Dieseldude, kakaoverhaul ko lang ng diesel engine (4m40) ko three days ago. My engine has no black smoke na but pag nirev mo ung engine, umiingay ung engine. Parang naka fuel lock. Pag idle, it seems fine but pag bigla mo ni rev-up. Ang ingay talaga ng tunog niya parang knocking sound and seem not normal. what seems to be the problem? I already changed my nozzle tips and calibrated it.

[Dieseldude]

ok lang din po ba na tanggalin na ang EGR on crdi engines?

Emissions will suffer at low idle and part load driving condition.

[Dieseldude]

Sir Dieseldude, kakaoverhaul ko lang ng diesel engine (4m40) ko three days ago. My engine has no black smoke na but pag nirev mo ung engine, umiingay ung engine. Parang naka fuel lock. Pag idle, it seems fine but pag bigla mo ni rev-up. Ang ingay talaga ng tunog niya parang knocking sound and seem not normal. what seems to be the problem? I already changed my nozzle tips and calibrated it.

Mahirap sagutin yan. Okay ba ang power?
Ito ang possible reasons, easiest to hardest.

1. Wrong timing of engine gear train.
2. Wrong injection pump timing.
3. Wrong /bad nozzles installed, wrong opening pressure.
4. Bad overhaul.
5. Etc.......

[vyn300d]

Emissions will suffer at low idle and part load driving condition.

Can you recommend me a shop sir? Thanks

[batosai]

Sir isuzu bighorn w/ 4JG2 engine.. Ung PCV is the breater diba po? Correct

its located naman na after the air filter and mdyo malayo ang distance sa filter, and nag install na din po ako ng oil catch can sa breater. Ang isang napansin ko ay may isang maliit na hose (size ng Vacum hose sa EGR valve) install from the top of the housing ng air filter na connected sa turbo. At what part of the turbo is this hose connected to? You may have your hose connections mixed up. Do you see oil or boost pressure coming out of this hose while the engine is running? (at idle and at maximum rpm) Sir I dont know if there's a boost but its dry and no mark of oil when I removed it, Its connected in the upper right side of turbo (when facing the engine)

ok lng po ba na temporarily remove this hose to see if it's the cause or it will harm the turbo if removed? I don't think it will harm your turbo. I'll try to removed this hose and see if there's an improvement, I'll also try to re-direct the PCV hose (from oil cath can outlet) to the ground and see if oil will still occur on my filter element.



Thanks

[chilledoxygen]

Mahirap sagutin yan. Okay ba ang power?
Ito ang possible reasons, easiest to hardest.

1. Wrong timing of engine gear train.
2. Wrong injection pump timing.
3. Wrong /bad nozzles installed, wrong opening pressure.
4. Bad overhaul.
5. Etc.......

I drove it kanina. No power at all. When fuel lock occurs (yung noise), nawawalan ng hatak. And mejo mausok sha pag naka fuel lock. Pero one click start naman sha kahit umaga. I suspect the injection pump? Pag magpacalibrate ng pump mga how much sa inyo sir?

[rgbengano]

ako din naghahanap ng mekaniko ng bighorn..

symptoms:

1.. habang tumatakbo, biglang mawawalan ng hatak, tapos mamamatay (parang walang gas)

2.. pag reset ng keys, start agad..

3.. pag check sa pitpump, may hangin.. (bagong palit po yan ha)

4. sa injector na kaya ang problema??

salamats

[Dieseldude]

I drove it kanina. No power at all. When fuel lock occurs (yung noise), nawawalan ng hatak. And mejo mausok sha pag naka fuel lock. Pero one click start naman sha kahit umaga. I suspect the injection pump? Pag magpacalibrate ng pump mga how much sa inyo sir?

This is probably an egr problem.

[Dieseldude]

ako din naghahanap ng mekaniko ng bighorn..

symptoms:

1.. habang tumatakbo, biglang mawawalan ng hatak, tapos mamamatay (parang walang gas)

2.. pag reset ng keys, start agad..

3.. pag check sa pitpump, may hangin.. (bagong palit po yan ha)

4. sa injector na kaya ang problema??

salamats

Hanapin mo muna yung source ng air suction leak sa fuel lines...... baka nanggagaling sa loose hose clamps dahil bago na kamo ang feed pump mo (filter base).

Pag na-correct mo na and air leak at ganun pa din ang problem, the electronics have to be checked. Walang problem ang injectors mo.