Diesel Fuel Injection System Help Desk

[halimaw]

Kamusta po idol DieselDude...
Dati po mausok yung Fieldmaster lalu pag sudden acceleration, pina-tuneup changeoil palit bago air/fuel/oil filters ganun pa din. May mechanic po nagsabi sakin na posible din daw na nasa quality ng diesel kaya mausok madumi daw diesel natin sa pinas, example pa nya may mga bagong montero nga daw wala pa plaka mausok na.
After browsing some forum, nabasa ko po about Euro4 and Euro5 compliant Diesel fuel which is cleaner daw. Ang nabanggit po is Unioil Euro4 and Seaoil Euro5. Big3 is Euro2 only.
Kaya sir, tried Unioil, after a couple of Fills with unioil napansin ko very less smoke na nga kahit sudden acceleration or pataas ang daan need to step more sa pedal di na nga mausok.

Question ko po, totoo po ba na posibleng by using cleaner euro4/5 compliant diesel e mawala ang emission ng black smoke or nagkataon lang yung experience ko.

Another question po, I read na euro4/5 diesel has less sulfur that can adversely affect older diesel engines due to lack of lubrication etc, totoo po ba to sir? Or safe naman ikarga euro4/5 ng unioil seaoil diesel on older engines as is without adding 2T.
To counter this naglalagay din po ako ng 2T oil 200ml/50L mix po, so far so good naman, lesser vibration and better response. Wala po ba bad effect ang 2T oil sa older diesel engines like 4m40 fieldmaster?
Thanks MasterDD in advance!


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[Dieseldude]

Kamusta po idol DieselDude...
Dati po mausok yung Fieldmaster lalu pag sudden acceleration, pina-tuneup changeoil palit bago air/fuel/oil filters ganun pa din. May mechanic po nagsabi sakin na posible din daw na nasa quality ng diesel kaya mausok madumi daw diesel natin sa pinas, example pa nya may mga bagong montero nga daw wala pa plaka mausok na. Madaming montero sa kalye......hindi naman sila mausok.

After browsing some forum, nabasa ko po about Euro4 and Euro5 compliant Diesel fuel which is cleaner daw. Ang nabanggit po is Unioil Euro4 and Seaoil Euro5. Big3 is Euro2 only.
Kaya sir, tried Unioil, after a couple of Fills with unioil napansin ko very less smoke na nga kahit sudden acceleration or pataas ang daan need to step more sa pedal di na nga mausok. That's good to know. Nag improve din ba ang power?

Question ko po, totoo po ba na posibleng by using cleaner euro4/5 compliant diesel e mawala ang emission ng black smoke or nagkataon lang yung experience ko. Hindi ko alam.

Another question po, I read na euro4/5 diesel has less sulfur that can adversely affect older diesel engines due to lack of lubrication etc, totoo po ba to sir? Less sulfur means less lubrication. But it depends on the formulation. I haven't really studied this matter.

Or safe naman ikarga euro4/5 ng unioil seaoil diesel on older engines as is without adding 2T. I don't know. But I'm quite sure that these new players have studied their fuel's applicability to our market.
To counter this naglalagay din po ako ng 2T oil 200ml/50L mix po, so far so good naman, lesser vibration and better response. Wala po ba bad effect ang 2T oil sa older diesel engines like 4m40 fieldmaster? Di ko pa naaral ang effects ng 2T oil. Pero kung ganyan mix ratio, palagay ko okay lang.
Thanks MasterDD in advance!

[cokezero]

sir dieseldude, anong problem ng engine kung sa may dipstick may steam na lumalabas? blowby na ba yun?
mausok rin yung exhaust ko ng puti during idle and gear shifting pero konti lang.

[kompressor]

Dieseldude,


I noticed that I started having fuel backflow problems after I replaced my fuel filter. The former one was an Asahi brand while the replacement was something really el cheapo (Sakura or something similar sounding) as I had no time to get one during the time I changed it. Do diesel fuel filters also have one way valves like those in oil filters?

If not, how about feed/primer pumps? Are they equipped with a one way valve? Or am I missing a fuel check valve along my fuel plumbing?

[kompressor]

Dieseldude,


I noticed that I started having fuel backflow problems after I replaced my fuel filter. The former one was an Asahi brand while the replacement was something really el cheapo (Sakura or something similar sounding) as I had no time to get one during the time I changed it. Do diesel fuel filters also have one way check valves like those in oil filters?

If not, how about feed/primer pumps? Are they equipped with a one way valve? Or am I missing a fuel check valve along my fuel plumbing?

Up ko lang yung query ko.

Are there other users who experienced similar fuel back flow issues? Basically, the result is having to occasionally pump the feeder by hand till the fuel reaches the injection pump (pag bumigat na yung pump, it will start with one click). I'm using an FC321 but planning to change to a Baldwin BF7534 (4D56 application).

[Dieseldude]

Up ko lang yung query ko.

Are there other users who experienced similar fuel back flow issues? Basically, the result is having to occasionally pump the feeder by hand till the fuel reaches the injection pump (pag bumigat na yung pump, it will start with one click). I'm using an FC321 but planning to change to a Baldwin BF7534 (4D56 application).

Of course, we often see this condition.

Atmospheric air is getting into the injection pump, hoses and gaskets, or filter assembly when engine is not running. Check for worn sealing gaskets or loose fittings.

[kompressor]

Thanks! I'll check for air leaks or loose fittings then. Will also check the filter baka kulang sa higpit both filter and water separator.

[kompressor]

Of course, we often see this condition.

Atmospheric air is getting into the injection pump, hoses and gaskets, or filter assembly when engine is not running. Check for worn sealing gaskets or loose fittings.

I think I found where the air leak is. I disassembled the feed pump assembly and tried pumping with the inlet port closed. To my surprise, I barely felt any suction and the hand pump will just return to its original position, indicating a possible air leak. Removed the fuel filter, covered the holes and pumped, same thing. I went to an auto supply just to check how a brand new feeder pump behaves and presto, the pump will stay pressed down if I pumped with the inlet port plugged. Bought the new feeder pump for P330 pesoses.

I checked the old feeder pump after disassembly and to my horror, the diaphragm was ripped! It was probably destroyed when the gas station mechanic started pumping after I had the filter replaced a month or so ago. And as per my observation, the pump's palm rest is stuck to the shaft (which should normally turn without moving the shaft) so a slight circular movement of the palm while pumping might have ruined the diaphragm, no thanks to the gas station mechanic.

Installed the new feeder, transferred the fuel filter (since it's relatively new and had no water when I drained it), reassembled the hoses, clamped everything tightly and started pumping. When the pump got heavy, I bled the system on all 4 injectors including the feeder's bleed screw. After 5 seconds on the glow plug, cranked and it started off with one click. Idled the engine for around 15 minutes then turned the engine off.


Tried starting later after the sun went down (approximately 7 hours from the last start) and it's still a one-click wonder. Will be observing in the later days if the problem is finally addressed. The joys of being able to fix stuff by one's self is priceless (aside from the pesoses saved on labor costs)


Thanks and more power Dieseldude!

[Dieseldude]

sir dieseldude, anong problem ng engine kung sa may dipstick may steam na lumalabas? blowby na ba yun? Of course blowby yan. Pero normal ang blowby sa lahat ng engines, bago or luma. Lumalakas ang blowby habang naluluma ang engine.

mausok rin yung exhaust ko ng puti during idle and gear shifting pero konti lang. Mahirap ito sagutin. Ipa-check mo sa diesel specialist workshop ang car mo. Maraming pinanggagalingan ang white smoke......wrong timing?

Btw....sabihin mo naman kung ano ang make/model ng car mo next time...

[dingch]

Sir Deiseldude,

I acquired a 1998 Adventure GLS M/T Dsl. Its in running condition, not really worn looking. Aircon is ok, instrument panel is also working. 110k sa odometer, hindi naman na-ondoy.

Its my first time to handle a diesel car/engine.

I dont hav a background as to its maintenance or repair history so i plan to have it checked. Parang general checkp. so my question is this:

What are the parts/components that need
1) replacing outright
2) adjustment or repair
3) checking

Like for example, sabi ng driver namin, change oil na agad along with filters since we dont know when was the last change oil. Palitan ko ba lahat ng mga belts? Any particular belt na dapat pinaka importante mapalitan? Fuel pumps? Compression test ba?

Is calibration in order na? Kelangan ba ipacheck ang fuel injection (i just read this from another thread).

Meron bang common electrical issue ang adventure na dapat unahan ko na at maipagawa?

May nakabudget ako na money for engine rehab na around 20-30k kung talagang kailangan.


THanks dude!