Diesel Fuel Injection System Help Desk

**kramterrag** · May 25th, 2012 02:00 AM

Hi Dieseldude,

Need some advice on how to solve jerking problems on my pick up. Kapag nasa 3rd & 5th gear siya and accelerating and at 1100-1200 rpm ko na-e-experience yung jerking. Is this normal? or something is wrong with my pick-up?

Thanks in advance.

**Dieseldude** · May 25th, 2012 08:31 AM

Originally Posted by kramterrag

Hi Dieseldude,

Need some advice on how to solve jerking problems on my pick up. Kapag nasa 3rd & 5th gear siya and accelerating and at 1100-1200 rpm ko na-e-experience yung jerking. Is this normal? or something is wrong with my pick-up?

Thanks in advance.

Jerking is never normal. As a starting point, you have to post the make and model or your ride.

**Djerms** · May 25th, 2012 12:16 PM

Originally Posted by Dieseldude

Toyota has upgraded their high pressure supply pump. Isuzu has a retrofit upgrade. I don't know if their new Dmax comes with the improved supply pump.

Thanks so much. The toyota upgrade is good to hear. I might just wait for the 3.0 Hilux

**ydrion** · May 25th, 2012 04:34 PM

hi po sir dieseldude. ask lang po sana ako kung bakit nasira ang 4 fuel injectors ng isuzu alterra (2005 model) namin after po pinachange oil at pinarepair ang clutch assembly sa casa. ano po bang usual culprit sa injector at suction valve problems. maayos pa naman po ang makina nung hinatid ko dun pero nung kukunin ko na, sabi ng mechanic ay bigla na lang daw bumigay ang makina nung tinest drive na after the repair. humihingi po ng 44k per injector (176k para sa apat) at 8k for the suction valve.gusto po kasi naming magfile ng complaint for the damage done to the car. thanks a lot

**vincr** · May 25th, 2012 04:37 PM

Hi Dieseldude,

I have a Pajero 4d56 TD, sa umaga, hirap magstart, mga 2 clicks, then pag nagstart biglang mamamatay, kailangan kong apakan yung accelerator for a few seconds after nya magstart para di sya mamatay, then pag mainit na sya ok na yung takbo nya, pag pinatay yung makina then start after a few minutes mabilis sya magstart, pag matagal na nakapatay yung makina, hard starting na naman, na-check ko yung glowplugs ok naman, nago-glow lahat. sa injection pump kaya ang problem?

Thanks.

**Dieseldude** · May 26th, 2012 12:00 AM

hi po sir dieseldude. ask lang po sana ako kung bakit nasira ang 4 fuel injectors ng isuzu alterra (2005 model) namin after po pinachange oil at pinarepair ang clutch assembly sa casa. Walang relasyon ang change oil and clutch repair sa common rail diesel system.

ano po bang usual culprit sa injector at suction valve problems. Water, dirt, and design fault.

maayos pa naman po ang makina nung hinatid ko dun pero nung kukunin ko na, sabi ng mechanic ay bigla na lang daw bumigay ang makina nung tinest drive na after the repair. Shempre, anything is possible. Pero, hindi ko talaga maintindihan kung paano pwedeng masira nang sabay-sabay ang apat na injectors chaka suction valve.

humihingi po ng 44k per injector (176k para sa apat) at 8k for the suction valve. Grabe naman. Up-selling ang mild term jan. Hiway robbery naman ang tingin ko.

gusto po kasi naming magfile ng complaint for the damage done to the car. Teka muna, relax ka lang. Heto ang suggestion ko.

1) Don't call the workshop. Just go there, then tell them that you want to see your car immediately.
2) Start your car and do a test drive. Your engine is fine if it runs well and if check engine lamp is off.
3) Pay for the change oil and clutch repair; then pull out your car.
4) If the engine runs bad, talk to the service manager and ask him how it can be possible to have a simultaneous failure on all injectors plus suction valve.

thanks a lot You're welcome....

**Dieseldude** · May 26th, 2012 12:22 AM

Hi Dieseldude,

I have a Pajero 4d56 TD, sa umaga, hirap magstart, mga 2 clicks, then pag nagstart biglang mamamatay, kailangan kong apakan yung accelerator for a few seconds after nya magstart para di sya mamatay, then pag mainit na sya ok na yung takbo nya, pag pinatay yung makina then start after a few minutes mabilis sya magstart, pag matagal na nakapatay yung makina, hard starting na naman, na-check ko yung glowplugs ok naman, nago-glow lahat. sa injection pump kaya ang problem? Very possible.

Thanks.

**kramterrag** · May 29th, 2012 12:28 AM

Originally Posted by Dieseldude

Jerking is never normal. As a starting point, you have to post the make and model or your ride.

Foton Blizzard po ung ride ko with 4JB1 NA engine. nasa 5K km pa lang po siya. Still experiencing the jerking especially on 3rd gear at 1100-1200rpm and accelerating tapos mawawala rin ung jerk below and above that range.

Thanks in advance po ulit master DD

**Dieseldude** · May 29th, 2012 07:57 AM

Originally Posted by kramterrag

Foton Blizzard po ung ride ko with 4JB1 NA engine. nasa 5K km pa lang po siya. Still experiencing the jerking especially on 3rd gear at 1100-1200rpm and accelerating tapos mawawala rin ung jerk below and above that range.

Thanks in advance po ulit master DD

This car is still under warranty. Consult your dealer. They will be in the best position to help you.

**Dieseldude** · May 29th, 2012 08:00 AM

Originally Posted by ydrion

hi po sir dieseldude. ask lang po sana ako kung bakit nasira ang 4 fuel injectors ng isuzu alterra (2005 model) namin after po pinachange oil at pinarepair ang clutch assembly sa casa. ano po bang usual culprit sa injector at suction valve problems. maayos pa naman po ang makina nung hinatid ko dun pero nung kukunin ko na, sabi ng mechanic ay bigla na lang daw bumigay ang makina nung tinest drive na after the repair. humihingi po ng 44k per injector (176k para sa apat) at 8k for the suction valve.gusto po kasi naming magfile ng complaint for the damage done to the car. thanks a lot

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