Diesel Fuel Injection System Help Desk

[glenn manikis]

Central Diesel in Q.Ave. cor. Sct. Magbanua

Home | Central Diesel (Philippines)

thank you sir!!!

[spacie]

sir pwede magtanong? ask ko nga po kung may idea kayo sa delica spacegear 4d56 engine automatic tranny subic?

parang sinisinok, nawawalan ng hatak pag tinapakan ko gas pero pag gianalit ko ng husto deretso naman takbo nya
pero pag normal lang bibilis babagal parang kinakapos ng hininga

nagpalit na po ako ng fuel filter pero replacement lang ganon parin nakakabitin pag oovertake

maraming salamat po

[debal]

sir diesel dude. tanong ko lang po ano reason bakit lakas sa krudo ng crosswind xto at 2002 na gamit ko. lumalabas po 7km/ltr. tpos may white smoke din po kahit naka idle lang sya. napa calibrate ko po sya last july. odo 250k. tia.

[Dieseldude]

sir diesel dude. tanong ko lang po ano reason bakit lakas sa krudo ng crosswind xto at 2002 na gamit ko. lumalabas po 7km/ltr. tpos may white smoke din po kahit naka idle lang sya. napa calibrate ko po sya last july. odo 250k. tia.

Kelan tumaas ang fuel consumption, after calibration?

[Dieseldude]

sir pwede magtanong? ask ko nga po kung may idea kayo sa delica spacegear 4d56 engine automatic tranny subic?

parang sinisinok, nawawalan ng hatak pag tinapakan ko gas pero pag gianalit ko ng husto deretso naman takbo nya
pero pag normal lang bibilis babagal parang kinakapos ng hininga

nagpalit na po ako ng fuel filter pero replacement lang ganon parin nakakabitin pag oovertake

maraming salamat po

Hindi ko alam ang sagot.

Pero pa-check mo ang adjustment ng accelerator and/or transmission cables.

[debal]

Kelan tumaas ang fuel consumption, after calibration?

hindi po sir. bago ako nagpacalibrate ganon na consumption ko.

[Dieseldude]

hindi po sir. bago ako nagpacalibrate ganon na consumption ko.

Hindi maganda yung white smoke. Sana wala lang sa timing ang injection pump. Mas mabuti kung patingnan mo sa mechanic..

[uToy_Story]

Sir,

Good day.

I own a 95 JDM Pajero with 4m40 TDIC engine (A/T). It has 137,000 kms already. I regularly change my oil at 5,000 kms (including air filter, oil filter, and fuel filter). So far, I have no issues with hard starting, excessive black smoke. Fuel consumption is at 6km/L to 7km/L city, 10km/L to 12km/L highway. Never had my pump/nozzles repaired or replaced throughout my 5 year ownership.

I have read a lot of forums already (including this of course), I just want to ask for your honest opinion.

1) If I replace my exhaust pipe to 2.5 in., will this help in increasing my high speed (I target to hit around 120 to 130kms) and acceleration at low to mid speed ranges?

2) Should I replace my injectors or have it checked given the odometer reading? Though like you said before...if not broken dont fix it. I am just wondering if this could improve my FC and engine response. I got a chance to have my car dynoed and the owner said that based on their readings everything seems fine. But as the owner of the car, I believe there is still room for some improvement.

3) I have my thermostat removed from my radiator, would you recommend it having back? What is the effect of having this part removed?

As always, your opinions are very much appreciated.

More power.

[blue_gambit]

Sir,

Good day.

I own a 95 JDM Pajero with 4m40 TDIC engine (A/T). It has 137,000 kms already. I regularly change my oil at 5,000 kms (including air filter, oil filter, and fuel filter). So far, I have no issues with hard starting, excessive black smoke. Fuel consumption is at 6km/L to 7km/L city, 10km/L to 12km/L highway. Never had my pump/nozzles repaired or replaced throughout my 5 year ownership.

I have read a lot of forums already (including this of course), I just want to ask for your honest opinion.

1) If I replace my exhaust pipe to 2.5 in., will this help in increasing my high speed (I target to hit around 120 to 130kms) and acceleration at low to mid speed ranges?

2) Should I replace my injectors or have it checked given the odometer reading? Though like you said before...if not broken dont fix it. I am just wondering if this could improve my FC and engine response. I got a chance to have my car dynoed and the owner said that based on their readings everything seems fine. But as the owner of the car, I believe there is still room for some improvement.

3) I have my thermostat removed from my radiator, would you recommend it having back? What is the effect of having this part removed?

As always, your opinions are very much appreciated.

More power.

# 3 your engine wont reach optimum operating temp...

Sent from my GT-I9300 using Tsikot Car Forums mobile app

[Dieseldude]

Sir,

Good day.

I own a 95 JDM Pajero with 4m40 TDIC engine (A/T). It has 137,000 kms already. I regularly change my oil at 5,000 kms (including air filter, oil filter, and fuel filter). So far, I have no issues with hard starting, excessive black smoke. Fuel consumption is at 6km/L to 7km/L city, 10km/L to 12km/L highway. Never had my pump/nozzles repaired or replaced throughout my 5 year ownership.

I have read a lot of forums already (including this of course), I just want to ask for your honest opinion.

1) If I replace my exhaust pipe to 2.5 in., will this help in increasing my high speed (I target to hit around 120 to 130kms) and acceleration at low to mid speed ranges? I don't think doing this will improve the situation. Injection pump settings and turbo boost have the greatest influence on power and speed. You can measure exhaust backpressure to see if you have any restriction in your exhaust system.

2) Should I replace my injectors or have it checked given the odometer reading? Though like you said before...if not broken dont fix it. Your injectors seem to be okay, so use them. But if your injectors were inspected at our workshop, we would recommend replacing them as the nozzle flats would be deeply eroded due to high mileage wear. I am just wondering if this could improve my FC and engine response.It will not. I got a chance to have my car dynoed and the owner said that based on their readings everything seems fine. Did they measure exhaust backpressure during dynotest? But as the owner of the car, I believe there is still room for some improvement.

3) I have my thermostat removed from my radiator, would you recommend it having back? What is the effect of having this part removed? You have to put it back. Your engine will be running too hot or can overheat.

As always, your opinions are very much appreciated.

More power.

[vvti2.0]

Sir, pwede ba magbago ang fuel consumption mo kapag nagpalit ka ng timing belt? 2C engine, 65k km, para kasing lumakas consumption after magchange ng timing belt.

[Dieseldude]

Sir, pwede ba magbago ang fuel consumption mo kapag nagpalit ka ng timing belt? 2C engine, 65k km, para kasing lumakas consumption after magchange ng timing belt.

Walang effect sa fuel consumption ang pagpalit ng timing belt.

Pwede magkaroon ng effect kung nawala sa timing ang injection pump nung magpalit ng belt.

[vvti2.0]

Pwede ba ito sir ma check na hindi babaklasin buong harap? Or any other symptoms na nawala sa timing yung injection pump?

[Dieseldude]

Pwede ba ito sir ma check na hindi babaklasin buong harap? Sa palagay ko pwde.

Or any other symptoms na nawala sa timing yung injection pump? White or black smoke, sometimes knocking sound.

[shelu]

sir, my car is a crosswind XUV AT, 2005. my concern really is its higher FC. some friends who owned the same car claims to have their FC around 10-12km/l (city drive) while mine is only within the 8-9km/l range. i had the injectors cleaned and balanced at a calibration shop near my place. however, nothing changed with my FC. by the way, it's a well-maintained car. anong pwede gawin dito para tumipid naman ng kahit kunti? thanks so much.

[innova2013]

sir, my car is a crosswind XUV AT, 2005. my concern really is its higher FC. some friends who owned the same car claims to have their FC around 10-12km/l (city drive) while mine is only within the 8-9km/l range. i had the injectors cleaned and balanced at a calibration shop near my place. however, nothing changed with my FC. by the way, it's a well-maintained car. anong pwede gawin dito para tumipid naman ng kahit kunti? thanks so much.

Sir, malaking factor din ang driving style sa fuel consumption at tire pressure, tire size, ilan ang laging sakay, pati traffic conditions

[seph.patrick]

Hi Sir,

Is there any truth in putting kerosene in your diesel fuel tank to clean your fuel system?

Thanks!

[jessieboy19]

Hi sir DD, i have a pajero DI-D 3.2 A/T 2003 model ride. It has 183k on it but seems to be running well naman. Considering its age and mileage, i think its about time to have its fuel injectors serviced. Can you give me a quotation via pm more or less how much will it cost me. I dont want to try other diesel service centers as i wanted to deal with you guys who are experts in this kind of field. Thanks in advance.

[ron_diaz30]

Guys I have a 2008 Isuzu Sportivo AT. The following was recently done to my ride:
1. Changed Oil.
2. Change fuel and oil filters.
3. Cleaned air filter.
4. Blanked EGR (This removed the black smoke).

On our recent trip to Naga City via south road I experienced the following:
1. Maingay na makita.
2. Very slow acceleration (Feels like stuck to the 1st gear).
3. High fuel consumption.
4. At 80-90kph it feels like from the 4th gear it automatically gears down to 3rd while accelerating.

On our way back eto naman ang nangyari:
1. Pumino tunog ng makina hindi na maingay.
2. Overtaking power was restored.
3. Fuel consumption improved. We managed to consume a little less than 1 full tank of diesel.

Question: Is it possible that a broken part was suddenly fixed? Is so ano kaya ito mga sir? My concern is the downshifting na alanganin ng AT on high speeds. Is this the injection pump or the AR transmission? I forgot to change the AT fluids pala.

[Dieseldude]

sir, my car is a crosswind XUV AT, 2005. my concern really is its higher FC. some friends who owned the same car claims to have their FC around 10-12km/l (city drive) while mine is only within the 8-9km/l range. i had the injectors cleaned and balanced at a calibration shop near my place. however, nothing changed with my FC. by the way, it's a well-maintained car. anong pwede gawin dito para tumipid naman ng kahit kunti? thanks so much.

Replace air and fuel filters. Service injection pump if there is no improvement after the filter change.