Diesel Fuel Injection System Help Desk

[Dieseldude]

Hello All!
1) I tried the "search this forum" button but could not find info on my question (closest i got was oil bypass filtration,or maybe its somewhere there??). I`m pretty new to diesel. I have a 4dr5 powered highhood jeep. There apparently is no built in Fuel/Water seperator! Is that normal for the 4dr5 or is it hidden somewhere? Yes it is. The 4DR5 does not originally come with a separator. Otherwise, is there a correct specification fuel/water seperator (even an aftermarket aka replacement)? Or can i just use anything that fits? I just had some fuel system work done, so sayang naman if i dont take care of my engine. Any separator for a similar engine displacement will be fine.

2) Also my element type oil filter leaks at the point where the oil filter housing contacts the base (the one you screw the housing to with a single bolt) even when i tighten up the bolt on the filter housing. I`m used to tightening up regular spin off disposable filters tightly by hand only, masama kaya yung bottom oil filter oil ring ko? Its a new o-ring! Thank You! patrick Only you can determine the cause if this leak.

[PatT]

DIESELDUDE-
Thanks for your reply! I got a nippon water seperator. Sa oil leak question ko, i just meant if there was anything out of the ordinary that might be causing the oil leak. Ok, i will doublecheck the usual things like tightness, or even wether the flange surface is contacting the filter correctly(??), etc.. Thanks again! patrick

[Dieseldude]

Thanks for your reply! I got a nippon water seperator. This is ideally mounted before the feed pump. Does it have a filter and glass bowl? How much did it cost?

Sa oil leak question ko, i just meant if there was anything out of the ordinary that might be causing the oil leak. Ok, i will doublecheck the usual things like tightness, or even wether the flange surface is contacting the filter correctly(??), etc.. Check the square-cut oring which goes into the groove of the filter head. Thanks again! patrick

[PatT]

P280 for filter only (i have the old mount) and no glass bowl. I will check oring. thank you!

[semajpay07]

have tried adding 2t to my mb100 van. maganda naman ang effect. less engine noise talaga

[Djerms]

Hi DD,

My choking problem keeps on going back everytime my fuel level reaches slightly below 1/2. Ano kaya ang problema? I already replaced several fuel filters, scv. Napansin ko lang lately pag full tank ulit ako biglang nawawala ang problema. I think there is air going in the system. Whats the first part I should test?

Thanks sir!

[Dieseldude]

P280 for filter only (i have the old mount) and no glass bowl. I will check oring. thank you!

Thanks.......

[Dieseldude]

Hi DD,

My choking problem keeps on going back everytime my fuel level reaches slightly below 1/2. Ano kaya ang problema? I already replaced several fuel filters, scv. Napansin ko lang lately pag full tank ulit ako biglang nawawala ang problema. I think there is air going in the system. Whats the first part I should test?

Thanks sir!

Baka may butas sa bandang gitna yung steel suction pipe sa loob ng fuel tank.

You can do this. Replace the black hose between your fuel filter and supply pump with a transparent hose. Check for presence of air bubbles when your fuel tank is full and when the engine starts choking (fuel level below 1/2). If bubbles start appearing only when your level is below 1/2, you've solved it.

Don't forget to put back the original black rubber hose.

Please share the result in this thread.

[Djerms]

Hi Dieseldude. While I would've wanted to solve this problem myself. I've grown tired of this recurring issue sa strada. I decided to sell and just get another pickup. I am choosing between a hilux 3.0 and Dmax. Do these rigs also have SCV issues or resolved na with the newer and longer SCVs?

[Dieseldude]

Hi Dieseldude. While I would've wanted to solve this problem myself. I've grown tired of this recurring issue sa strada. I decided to sell and just get another pickup. I am choosing between a hilux 3.0 and Dmax. Do these rigs also have SCV issues or resolved na with the newer and longer SCVs?

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.

[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.

[Dieseldude]

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]

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]

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]

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]

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]

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]

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]

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]

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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