Diesel Fuel Injection System Help Desk

[ajOT]

greetings to all....
guyz and gals I would need your help and expert advise on this....
My engine was just newly started and been idle or leave it running for a minute or two, when I drove the vehicle for at least 3-5 minutes of driving, there was a humps, of course I need to slow down or stop, namatay ang engine ko.... I started it immediately, nagstart naman kaagad ang engine, pero I didnt like the sound as there was like hammering sound on the engine, some say parang may garalgal sound sa engine.... so I turned off the engine, and waited for a minute or two, then started it, now the unusual peculiar sound was gone....
ano po kaya ngyari sa engine?
does it need some calibration or something?
I got a 2005 Innova J D4D M/T; and is 71k on the Odo
tnx.

[Dieseldude]

sir, nagpunta po ako kanina sa shop nyo para ipagawa yung hilander ko kaso wala na daw kayo

saan na po kayo ngayon?

May nilakad lang ako. Most of the time nasa shop ako. Kung wala ako, ask for Karen ot Antonio.

[Dieseldude]

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[Dieseldude]

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[Dieseldude]

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[Dieseldude]

greetings to all....
guyz and gals I would need your help and expert advise on this....
My engine was just newly started and been idle or leave it running for a minute or two, when I drove the vehicle for at least 3-5 minutes of driving, there was a humps, of course I need to slow down or stop, namatay ang engine ko.... I started it immediately, nagstart naman kaagad ang engine, pero I didnt like the sound as there was like hammering sound on the engine, some say parang may garalgal sound sa engine.... so I turned off the engine, and waited for a minute or two, then started it, now the unusual peculiar sound was gone....
ano po kaya ngyari sa engine?
does it need some calibration or something?
I got a 2005 Innova J D4D M/T; and is 71k on the Odo
tnx.

This looks like a supply pump starting to go bad.

[Dieseldude]

Hi Dieseldude,

I just bought a 2nd hand Pajero (Japan/Subic), below are the vehicles specifications:
- 1998 model / 5 doors
- 2.5 TDIC
- 4D56 Engine
- Automatic

The problem:
- mahina sya humatak
- hirap sa pataas na road
- malakas sa krudo (about 4-5 km/liter)

Maintenance performed:
- changed ATF fluid
- cleaned ATF filter (El Dorado does not have the model)
- changed Fuel filter (original)
- changed Air filter (original)

My Pajero is not producing black smoke actually it barely produces smoke, and the automatic transmission is shifting fine, overdrive is also working.

As per the previous owner he had it calibrated more than a year ago and replaced the nozzles 6 months back. What do you think is causing the sluggishness and high fuel consumption?

1. Blocked fuel supply to the injection pump
2. Insufficient turbo boost
   
3. Incorrect engine to injection pump timing
4. Injection pump not properly calibrated
   

Can you give me at least an estimate for the following job scope?
- Recheck injection pump to engine timing.
- Check and or repair turbocharger boost.
- Check and or calibrate injection pump.
- Check and or replace nozzles with original ones.
Sorry, this is not allowed in this forum.

Thank you in advance. You're welcome...

[promdiboy]

sir dieseldude, nirecommend ko diyan sa CDC uncle ko, local pajero 4m40 calibration. meron ba discount ang tsikoteers sayo?

[ajOT]

This looks like a supply pump starting to go bad.

sir to ask-are you referring to the supply pump-fuel pump? I just had it cleaned and changed its filter in Toyota last month - 12/2009

here are some added info of what's happening:
- when I am stucked in traffic engine has tendency to turn off; while a/c is ON; but if a/c is OFF it does sometimes occur, but very rare to happen....
- when I came from speeding up, then slowly slowed down due to traffic, engine turns off (not always though) but I have to step on the clutch and slowly release, put it to N-Neutral then rev up for idling to go up.... since idling drops if I dont do so.... added Q: what is the Normal idling of Innova D4D? is it 800rpm?
* after engine turns off, when I go unto ignition, engine starts immediately, but there are peculiar sound-something like hammering sound in the engine...

how did these things happen on my Innova suddenly as it is well taken cared of

what can I do to bring my vehicle on its Normal running condition?

please help..... thanks....

[Dieseldude]

sir to ask-are you referring to the supply pump-fuel pump? I just had it cleaned and changed its filter in Toyota last month - 12/2009.
Yes, the fuel supply pump.

here are some added info of what's happening:
- when I am stucked in traffic engine has tendency to turn off; while a/c is ON; but if a/c is OFF it does sometimes occur, but very rare to happen....
- when I came from speeding up, then slowly slowed down due to traffic, engine turns off (not always though) but I have to step on the clutch and slowly release, put it to N-Neutral then rev up for idling to go up.... since idling drops if I dont do so.... added Q: what is the Normal idling of Innova D4D? is it 800rpm? Idle is 700 - 800 rpm.
* after engine turns off, when I go unto ignition, engine starts immediately, but there are peculiar sound-something like hammering sound in the engine... The info you stated are symptomatic of a bad supply pump.

how did these things happen on my Innova suddenly as it is well taken cared of? Toyota has been having problems with their supply pumps...

what can I do to bring my vehicle on its Normal running condition?
Your vehicle has to be scanned to determine the true problem. And if a faulty supply pump is detected, this can be replaced.

please help..... thanks....

[japong]

Hi sir Dieseldude,

Question po sana sir. I have these Fiat Uno 1.7 Diesel. There is a leak in injection pump. Lucas injection base sa dog tag. minsan meron leak na halos every second tulo niya, minsan wala po talaga. kaso ngayon, hard starting. pwede po bang cause niya is dahil may leak sa injection pump at hinahangin po ba yun? Sometimes it almost start na kaso parang nawawala momentum. parang nauubos supply ng diesel. car has done 43,000kms, battery is good condition and crank the engines well but it does not start.

pinatingnan ko na din po injection pump. eye inspection lang. dapat daw baklasin at pina-rev niya ng around 6 seconds, then bitaw ng accelerator cable, medyo nagbago andar at nung pababa na rpm, parang mamamatay. baka daw may dapat palitan na parts sa injection. gusto ko po sana humingi ng isa pang opinion.

Plan ko po ngayon is to check:

1. glow plug if it's still ok.
2. go to a calibration center.

Any advise po if there are other things need to check sa diesel.

[Dieseldude]

Hi sir Dieseldude,

Question po sana sir. I have these Fiat Uno 1.7 Diesel. There is a leak in injection pump. Lucas injection base sa dog tag. minsan meron leak na halos every second tulo niya, minsan wala po talaga. kaso ngayon, hard starting.
pwede po bang cause niya is dahil may leak sa injection pump at hinahangin po ba yun? Pwede. Pa check mo din ang fuel shutoff solenoid sa injection pump. Madalas ito mag leak.

Sometimes it almost start na kaso parang nawawala momentum. parang nauubos supply ng diesel. car has done 43,000kms, battery is good condition and crank the engines well but it does not start.

pinatingnan ko na din po injection pump. eye inspection lang. dapat daw baklasin at pina-rev niya ng around 6 seconds, then bitaw ng accelerator cable, medyo nagbago andar at nung pababa na rpm, parang mamamatay. baka daw may dapat palitan na parts sa injection. gusto ko po sana humingi ng isa pang opinion.

Plan ko po ngayon is to check:

1. glow plug if it's still ok.
Good. Baka ito ang pinanggalalingan ng hard start.
2. go to a calibration center. Yan ang next step dahil nabanggit mo na meron leak ang injection pump.

Any advise po if there are other things need to check sa diesel. Baradong fuel filter?? Baka meron air leak (suction leak sa fuel filter and hoses).

[DLX_Revo]

Hi Dieseldude,

I just bought a 2nd hand Pajero (Japan/Subic), below are the vehicles specifications:
- 1998 model / 5 doors
- 2.5 TDIC
- 4D56 Engine
- Automatic

The problem:
- mahina sya humatak
- hirap sa pataas na road
- malakas sa krudo (about 4-5 km/liter)

Maintenance performed:
- changed ATF fluid
- cleaned ATF filter (El Dorado does not have the model)
- changed Fuel filter (original)
- changed Air filter (original)

My Pajero is not producing black smoke actually it barely produces smoke, and the automatic transmission is shifting fine, overdrive is also working.

As per the previous owner he had it calibrated more than a year ago and replaced the nozzles 6 months back. What do you think is causing the sluggishness and high fuel consumption?

1. Blocked fuel supply to the injection pump
2. Insufficient turbo boost
   
3. Incorrect engine to injection pump timing
4. Injection pump not properly calibrated
   

Can you give me at least an estimate for the following job scope?
- Recheck injection pump to engine timing.
- Check and or repair turbocharger boost.
- Check and or calibrate injection pump.
- Check and or replace nozzles with original ones.
Sorry, this is not allowed in this forum.

Thank you in advance. You're welcome...

Thanks very much for the reply. I'll drop buy there and have my unit diagnosed.

[Revenant]

I have had my Hyundai Matrix for 5 years now at 200000+km. I was surprised that she barely passed the emissions testing after revving it up for 3k+ rpm considering that I have cleaned the tailpipe, something that I have done for years now.

Recently, I have been observing that the exhaust smells "sulphuric" especially on cold starts, which my cousin told me when he opened up our gate. There is a grayish smoke coming out from the tailpie and the smell feels heavy on the lungs. Whenever I rev up to 3k rpm especially on inclines, I can now see from the rear view mirror the belching.

She has a history of Ondoy flooding by the way. I didn't have any ECU problems though according to the casa and the engine didn't have any rust build-ups.

[Dieseldude]

I have had my Hyundai Matrix for 5 years now at 200000+km. I was surprised that she barely passed the emissions testing after revving it up for 3k+ rpm..

Recently, I have been observing that the exhaust smells "sulphuric" especially on cold starts, which my cousin told me when he opened up our gate. There is a grayish smoke coming out from the tailpie and the smell feels heavy on the lungs. I also have a Matrix which has an approx mileage of 65K kms. This type of smoke and scent is normal when the engine is cold and when humidity is high. Smoke disappears within a minute after engine start.

Whenever I rev up to 3k rpm especially on inclines, I can now see from the rear view mirror the belching. Even when the engine is already hot?

She has a history of Ondoy flooding by the way. I didn't have any ECU problems though according to the casa and the engine didn't have any rust build-ups. If smoke persists even when hot, you may have some wear on the engine: like compression loss, valve leakage, and injector spray deterioration. This is normal wear for high mileage engines.

[japong]

Thank you sir Dieseldude.. God Bless...

[speed unlimited]

Just seen today a Subic Pajero when accelerating lot of black smoke on the tail pipe it produce that a problem on smoke belching . Is this really a problem on diesel engine which a lot of owner complain. Is this also the cause of consuming a lot of diesel gas.

[Dieseldude]

Just seen today a Subic Pajero when accelerating lot of black smoke on the tail pipe it produce that a problem on smoke belching . Is this really a problem on diesel engine which a lot of owner complain. Yes, many diesel owners complain of black smoke. But this problem is due to poor maintenance.
Properly maintained diesels don't emit black smoke.

Is this also the cause of consuming a lot of diesel gas. Partly yes. Black smoke is a sign of rich fuel mixture, either due to overfuelling, or due to insufficient air to the engine.

[Revenant]

I also have a Matrix which has an approx mileage of 65K kms. This type of smoke and scent is normal when the engine is cold and when humidity is high. Smoke disappears within a minute after engine start.

Even when the engine is already hot?

If smoke persists even when hot, you may have some wear on the engine: like compression loss, valve leakage, and injector spray deterioration. This is normal wear for high mileage engines.

Yes, I could see some smoke belching even if the engine is running hot. Can you pm me the details of your shop?

[kaloy228]

Hi Dieseldue,

Please advice:
My ride is a 2008 Crosswind manual. Problem is it jerks whenever it reached 2k rpm on any gear whether on flat or uphill road, even at 5th gear it's still jerks a lot as if fuel is not being delivered normally on the engine. It could not reached an 80 kph becasue of the jerking. What do you think the cause of this. It just had been 40k pms serviced.

thanks...