Diesel Fuel Injection System Help Desk

[ExROLLA]

[SIZE=4]sir dieseldude:[/SIZE]

[SIZE=4]i've been reading this thread before office work almost eveyday and i would say that it has been interesting, specially for me who is new to diesel powered vehicle. It's really your posts/questions which make our thread interesting. And I just try to share my experiences with you.[/SIZE]

[SIZE=4]i bought a 1997 hilander about three months ago. I'm pretty satisfied with its performance, including the suspension and the aircondition system, except for the white smoke and bad odor that comes out of its exhaust. Is it true that the 4ja1 isuzu engine is notorious for its white smoke emissions? No it's not true. If your compression is good and you're not burning oil, this could be a timing or a fuel injectoi system problem.[/SIZE]

[SIZE=4]I've seen isuzu crosswinds of latest models (which i learned also use 4ja1 engines) having the same problem on to white smoke emissions. C[/SIZE][SIZE=4]an you share your experiences on 4ja1 isuzu engines? thanks in advance.[/SIZE][SIZE=4] Of course. But I will first ask our technicians if they have noticed a white smoke trend on 4JA1s, then I'll get back to you. [/SIZE]

[SIZE=4]sir dieseldude:[/SIZE]
[SIZE=4][/SIZE]
[SIZE=4]thank you very much for your time[/SIZE]
[SIZE=4][/SIZE]
[SIZE=4][/SIZE]

[boy astig]

Sir Dieseldude,

These are my observations with my hilander 97.

1) When going down my garage or coming from a flat surface going towards an upward incline, my engine dies out on me. Its idle drops when it gets to a certain angle and then the engine dies out. However, if going down the garage, when i use the handbrake to control its descent while stepping lightly on the accelerator, the engine does not die out even on the sharpest angle of the incline.

2) When starting the vehicle in the morning, the idling sounds erratic with the rpm lower than normal. When the engine warms up, idling becomes stable. The fuel pump (not sure if thats what its called. Its the one that you pump when you drain the water accumulated by diesel fuel) is "soft" and when you pump it, idling becomes stable and "hiccups" which occur during the idling disappears.

Your comments on the above observations are greatly appreciated.

Good day

[Dieseldude]

Sir Dieseldude,

These are my observations with my hilander 97.

1) When going down my garage or coming from a flat surface going towards an upward incline, my engine dies out on me. Its idle drops when it gets to a certain angle and then the engine dies out. However, if going down the garage, when i use the handbrake to control its descent while stepping lightly on the accelerator, the engine does not die out even on the sharpest angle of the incline. Your idle rpm may be set too low. Adjust your idle speed to approx. 750 - 800 rpm, engine hot.

2) When starting the vehicle in the morning, the idling sounds erratic with the rpm lower than normal. When the engine warms up, idling becomes stable. Idle rpm is a bit lower on cold engines due to high oil viscosity and lower compression pressures. Newer engines have a cold idle device which automatically raises engine rpm when cold, and brings down the rpm to normal when the engine reaches operating temp.

The fuel pump (not sure if thats what its called. This normally called a manual feed pump or a hand pump. This is used to bleed air when the fuel filter is replaced, or after draining water.

Its the one that you pump when you drain the water accumulated by diesel fuel) is "soft" and when you pump it, idling becomes stable and "hiccups" which occur during the idling disappears. It is possible that the check valve on the filter base is leaking, allowing fuel to drain back to tank when engine is shut down for some time. You may also have a suction leak on your fuel hoses and fittings.

Your comments on the above observations are greatly appreciated.

Good day

[japong]

Hi Sir DieselDude,

May tanong po ako. May nabili po kasi ako na Fiat 1.7 Diesel. Gusto ko sana matrix na crdi kaso limited budget. problema ko po ay oil leaks kaso kaya naman po siya ng silicone gasket pero main concern ko po eh yung injection pump po yata nagleleak. Sinilip ko po sa ilalim at kumuha ko ng sample. Amoy Diesel po, kaya po siguro malakas sa diesel. Ano po ma-suggest nyo sir tsaka para ma-tune up na din po? May repair kit po ba siya o oil seal lang din po. Kinakabahan kasi ako sa gastos. Alam ko lang po kasi na shop eh central diesel at kumpleto po sila ng gamit. baka may shop po kayo na pwede ko dalin yung fiat. Pa-pm naman po kung meron o contact number.

salamat po.

[Dieseldude]

Hi Sir DieselDude,

May tanong po ako. May nabili po kasi ako na Fiat 1.7 Diesel. Gusto ko sana matrix na crdi kaso limited budget. problema ko po ay oil leaks kaso kaya naman po siya ng silicone gasket pero main concern ko po eh yung injection pump po yata nagleleak. Sinilip ko po sa ilalim at kumuha ko ng sample. Amoy Diesel po, kaya po siguro malakas sa diesel. Ano po ma-suggest nyo sir tsaka para ma-tune up na din po? May repair kit po ba siya o oil seal lang din po. Kinakabahan kasi ako sa gastos. Bosch ang injection pump ng Fiat. Available ang kit chaka oil seal nito. Hindi naman mahal ang repair kung leak lang ang problema. Pero hindi rin tayo makaksigurado sa kundisyon ng internal parts dahil siguradong mataas na ang mileage ng Fiat mo.

Alam ko lang po kasi na shop eh central diesel at kumpleto po sila ng gamit. Owner/service manager ako ng Central Diesel.

Baka may shop po kayo na pwede ko dalin yung fiat. Pa-pm naman po kung meron o contact number. Dalhin mo ang car mo sa any authorized Bosch diesel service para makasigurado ka. Hindi ito kaya gawin ng mga regular calibration shops dahil wala silang test specifications and correct parts para sa pump mo. At malamang, first time lang sila makakakita ng injection pump ng Fiat. Maski na sa amin, once in five years lang siguro kung makatanggap kami ng Fiat pump.

salamat po. Walang ano man.

[redvegetarian]

Hi Dieseldude!

Sir my R2 engine emits white smoke continuously. Here are the details:

Newly ouverhauled- its just about 3 months since it was overhauled.

It starts with one click but the idling is rough and there are lots of white smoke coming out of the exhaust pipe.

There is still white smoke even after the engine reaches normal operating temp.

The injection pump is the rotary type. The vehicle is a Mazda B2200.

What can I try to do first without spending money? How can I isolate the issue correctly, replacing only those things that needs replacement. Ayoko po sana mag shotgun ng parts. Im looking at replacing the injection pump and injectors e. Bka may quick fix. I alredy went to a small diesel calibration shop. They told me to have the engine checked first. Thanks in advance for the advise.

[Dieseldude]

Hi Dieseldude!

Sir my R2 engine emits white smoke continuously. Here are the details:
Newly ouverhauled- its just about 3 months since it was overhauled. Your engine should be ok if it was properly overhauled.

It starts with one click but the idling is rough and there are lots of white smoke coming out of the exhaust pipe. There is still white smoke even after the engine reaches normal operating temp. White smoke is a sign of unburned fuel.

The injection pump is the rotary type. The vehicle is a Mazda B2200.

What can I try to do first without spending money? How can I isolate the issue correctly, replacing only those things that needs replacement. Ayoko po sana mag shotgun ng parts. Check injection pump to engine timing.

Im looking at replacing the injection pump and injectors e. This is a wrong work approach as the condition of the fuel system has not yet been inspected, and it will be very costly for you.

Bka may quick fix. As I said, check injection timing first.

I alredy went to a small diesel calibration shop. They told me to have the engine checked first. Did they check injection timing?

Thanks in advance for the advise. You're welcome.

[redvegetarian]

Hi sir!

They did not check the injection pump to engine timing, unfortunately. Is it risky to try it myself? Can I turn the injection pump assembly clockwise or counter clockwise? I dont see any timing marks. Whats the reference point kung retarded or advanced na siya? Salamat ulit sa advise mga sir

[boy astig]

Sir Dieseldude,

Ok na yung issues 1 and 2 ko. Many thanks to you !!!

Regarding issue no. 3, san po located yung check valve ?

Is there a repair kit for this type of fuel pump?

Many Thanks Again !!!

[boy astig]

Sir Dieseldude,

Ok na yung issues 1 and 2 ko. Many thanks to you !!!

Regarding issue no. 3, san po located yung check valve ?

Is there a repair kit for this type of fuel pump?

Many Thanks Again !!!

[Dieseldude]

Hi sir!

They did not check the injection pump to engine timing, unfortunately. Is it risky to try it myself? No it is not risky. But you won't be able to time the pump properly.

Can I turn the injection pump assembly clockwise or counter clockwise? I dont see any timing marks. Whats the reference point kung retarded or advanced na siya? Salamat ulit sa advise mga sir I don't recommend that you do it because you don't have the training and experience for this. And even if I wanted to teach you, posting on this thread will not be enough to get the procedure across. So I suggest that you bring your car to an authorized Bosch diesel workshop.

[Dieseldude]

Sir Dieseldude,

Ok na yung issues 1 and 2 ko. Many thanks to you !!!

Regarding issue no. 3, san po located yung check valve ?
Check valve is located on the filter head.

Is there a repair kit for this type of fuel pump? Yes.

Many Thanks Again !!!

[boy astig]

Sir Dieseldude,

Ok na yung issues 1 and 2 ko. Many thanks to you !!!

Regarding issue no. 3, san po located yung check valve ?
Check valve is located on the filter head.

Is there a repair kit for this type of fuel pump? Yes.

Many Thanks Again !!!

Thanks a lot Senyor Dieseldude

[Chikselog]

sir DieselDude, a newbie here about diesel engines..
what is a commonrail diesel po? how does it differ from non-crdi engines? ask lang po, sana maintindihan ko na how does it differ..TIA sir

P.S.
sir, yung easy-to-understand language lang po ha..hehehe, newbie po talaga regarding diesel eh

[Dieseldude]

sir DieselDude, a newbie here about diesel engines..
what is a commonrail diesel po? how does it differ from non-crdi engines? ask lang po, sana maintindihan ko na how does it differ..TIA sir

P.S.
sir, yung easy-to-understand language lang po ha..hehehe, newbie po talaga regarding diesel eh

If you are not familiar with diesel engines, it will be difficult to explain the differences between CRDI and non-CRDI systems in this thread.

I suggest that you first do some self study, and come up with more specific questions. And since you are a newbie on diesels, I really do not know where to start as I have no idea how much you already know.

[anthon05]

hi dieseldude ... need your advice.

my crosswind emits white smoke if engine is cold and after a while decreases.

i noticed that emission smells more like unburned fuel. my fuel consumption is fine city is around 10km/lit.

mechanic said that maybe my nozzle releases more fuel than it can burn.

what do you think? will nozzle be replaced? how much

thanks

[Dieseldude]

hi dieseldude ... need your advice.

my crosswind emits white smoke if engine is cold and after a while decreases.

i noticed that emission smells more like unburned fuel. my fuel consumption is fine city is around 10km/lit.

mechanic said that maybe my nozzle releases more fuel than it can burn.

what do you think? will nozzle be replaced? how much

thanks

What is your elapsed vehicle mileage? This is often seen on engines with very high mileage......lower compression pressure when cold.

[anthon05]

hi dieseldude... mileage is 100k .. even if its running for quite some time.

the smell of unburn fuel is still very strong. what do i need to repair?

or replace? how much?

thank you

[Dieseldude]

hi dieseldude... mileage is 100k .. even if its running for quite some time.

the smell of unburn fuel is still very strong. what do i need to repair?
This is difficult to answer without actually seeing your car. A good mechanic should first check your engine's condition. Considering that your mileage is 100k, a compression test (engine cold) may reveal something.

or replace? how much? Don't know.....this will depend on the mechanic's evaluation.

thank you You're welcome.

[anthon05]

hi dieseldude.. do you have a shop? whats the address?

a mechanic that i asked said that probably its the nozzle, it releases more fuel than it can burn. if ever its the nozzle, more or less how much does it cost? and how long will it take to replace?

sorry kinda tight on the budget and i have to see if i can afford it at this time. if ever i don't have it fixed whats the consequence?

Thank you very much.