Diesel Fuel Injection System Help Desk

[Dieseldude]

I can't say anything good or bad about Liqui Moly or other brands as I haven't tried using any. If you want to try it out, just make sure that it's a diesel injector cleaner, and not a petrol injector cleaner. And I suggest these:

1. Replace and invest on an original Mits air filter
2. Check tire pressures and remove any unnecessary weights from your car
3. Fill up with clean diesel only, then log your consumption, exhaust quality, and power
4. Fill up with clean diesel, add injector cleaner in the proper ratio, then log data as you previously did
5. Then post your experience in this thread. This will be a great help to fellow Tsikoters.

Btw, the 4M40's fuel injection system is sturdy and quite tolerant to our fuel quality. It is the newer diesel injection systems which are quite sensitive to fuel quality.

[erick_214]

to TS...
i need your help...
I have a toyota hi-ace 99 (from japan)...
1) para saan po ba yung O/D..?
2) para saan po ba yung ETC..?
3) may settings po ba na pwedeng baguhin pa magshift-up ng mas maaga yung matic..?

thanks in advance...

PS...hindi ko alam kung tama yung pagpost ko...newbie lang po ako...

[Dieseldude]

Delete due to double posting

[Dieseldude]

Hi Eric,

This is not the correct forum but I will try to help you.
i need your help...
I have a toyota hi-ace 99 (from japan)...
1) para saan po ba yung O/D..?
O/D stands for overdrive, which is your transmission's last gear. With O/D on, your transmission will shift up to the last gear at the proper speed and load. With O/D off, your top gear will be one gear down from maximum. O/D on is normally used on highway driving, and O/D off for city driving.
2) para saan po ba yung ETC..?
ECT stands for electronically controlled transmission. I read on some posts that with ECT on, the transmission is controlled to remain longer on the lower gears before upshifting. This prevents premature wear on the the transmission if it upshifts and/or downshifts too often due to adverse road conditions.
3) may settings po ba na pwedeng baguhin pa magshift-up ng mas maaga yung matic..? Try ECT off.

thanks in advance...

PS...hindi ko alam kung tama yung pagpost ko...newbie lang po ako...
You can try Tsikot's transmission forum under workshops. You may be able to find more answers to your questions.

Bye

[Dieseldude]

Hi Guys,

With the high cost of fuel, let's get our heads together and contribute our ideas on how we can all save. Suggested topics are technical, practical, and absurd. One idea per topic is ideal so that others can have their chance to share their thoughts.

So here goes:
TECHNICAL: Let's keep our car in tip-top shape. Perform regular tune-ups and service.
PRACTICAL: Remove unnecessary clutter from our car as this is deadload on our engine.
ABSURD: Sell your car. Buy a motorcycle, scooter, bicycle, skateboard, or roller skates. Pwede rin tayo mag walking nalang.

Let's have fun while saving!!!!

[4JGtootsie]

Technical: Remove your roofrack when its not in use to lessen wind resistance and weight.
Practical: Avoid running with a full tank to lessen vehicle weight, unless there will be another 3peso increase soon.
Absurd: In nearing an insersection, try to maintain momentum without hitting the brake and the car in front of you until you have green light. Glide!

[aris 4jg2]

[SIZE=2]could you also help me with this pls?[/SIZE]
[SIZE=2]i have a 1994 isuzu trooper (4JG2 engine) and i had the engine rebuilt 5 mos. ago. i have a problem with OIL & FUEL consumption.[/SIZE]
[SIZE=2]With regards to the oil problem, i noticed that the turbo has a lot of oil in it. some mechanics told me that they'll redirect the breather hose to the dipstick so that it wouldnt waste oil.. but is this really goin' to solve the problem?[/SIZE]
[SIZE=2]also with the excessive fuel consumption, i just had it calibrated too, nozzle tips were also replaced but it still consumes around 3-5 kms/liter. what are the causes, and wht should i do? pls. help..tnx[/SIZE]

[4JGtootsie]

[SIZE=2]could you also help me with this pls?[/SIZE]
[SIZE=2]i have a 1994 isuzu trooper (4JG2 engine) and i had the engine rebuilt 5 mos. ago. i have a problem with OIL & FUEL consumption.[/SIZE]
[SIZE=2]With regards to the oil problem, i noticed that the turbo has a lot of oil in it. some mechanics told me that they'll redirect the breather hose to the dipstick so that it wouldnt waste oil.. but is this really goin' to solve the problem?[/SIZE]
[SIZE=2]also with the excessive fuel consumption, i just had it calibrated too, nozzle tips were also replaced but it still consumes around 3-5 kms/liter. what are the causes, and wht should i do? pls. help..tnx[/SIZE]

What did you replace when you did the engine rebuilt?
Original ba air filter mo?
Na break in mo ba ng mabuti?
Ako nag overhaul din ako last Sept at 77.4 liters I can do 829 kilometers. I have a 4JG2-TC non EFI manual transmission engine.
Ang injection pump ba ang ni calibrate or nozzles or both? Saan ka nag pa calibrate?

[aris 4jg2]

What did you replace when you did the engine rebuilt?
Original ba air filter mo?
Na break in mo ba ng mabuti?
Ako nag overhaul din ako last Sept at 77.4 liters I can do 829 kilometers. I have a 4JG2-TC non EFI manual transmission engine.
Ang injection pump ba ang ni calibrate or nozzles or both? Saan ka nag pa calibrate?

ei tnx sa rply..
>bale npalitan ung liner sleeves, pistonrings, gaskets, timing belt..
>opo na break in ko nman,ndi ko nga msyado pialalagpas ng 2000rpm ng ilang months
>nka type-r na air filter
>ngpalit din ng nozlzle tips, nacalibrate din injection pump(npalitn ung mga delivery valves)

[youngrider]

[SIZE=2]With regards to the oil problem, i noticed that the turbo has a lot of oil in it. some mechanics told me that they'll redirect the breather hose to the dipstick so that it wouldnt waste oil.. but is this really goin' to solve the problem?[/SIZE]

Do you mean from valve cover to dipstick hole? will it not result to excessive crankcase pressure and eventually wreaking the engine.

[Dieseldude]

[SIZE=2]Could you also help me with this pls? [/SIZE]I will try.

[SIZE=2]I have a 1994 isuzu trooper (4JG2 engine) and i had the engine rebuilt 5 mos. ago. i have a problem with OIL & FUEL consumption. Are you still having the same problem after the overhaul? [/SIZE]

[SIZE=2]With regards to the oil problem, i noticed that the turbo has a lot of oil in it. some mechanics told me that they'll redirect the breather hose to the dipstick so that it wouldnt waste oil.. but is this really goin' to solve the problem? This is a remedy, not a solution. A good turbo may leak oil if your air filter is blocked as excessive vacuum will be applied to the intake system. [/SIZE]

[SIZE=2]Also with the excessive fuel consumption, i just had it calibrated too, nozzle tips were also replaced but it still consumes around 3-5 kms/liter. what are the causes, and wht should i do? Assuming that your pump and injectors were calibrated to spec by a qualified diesel workshop. The only remaining causes for high fuel consumption would be improper injection pump to engine timing, and/or a restricted air filter.[/SIZE]

I suggest that you first replace your air filter with an original Isuzu filter as this is a common denominator for both your concerns.

[rion]

With regards to the oil problem, i noticed that the turbo has a lot of oil in it. some mechanics told me that they'll redirect the breather hose to the dipstick so that it wouldnt waste oil.. but is this really goin' to solve the problem?

to think of it, I think it's not a good idea redirecting your pcv back to the dipstick because the dipstick also has positive pressure. imo, it's better vent it out with a oil catch can. as long as it is diesel engine.

[Dieseldude]

You are right Rion. Plumbing the blowby gasses back to the dipstick will raise the engine's air box pressure, which could push out the crankshaft seals. Remedy is to just drain out the gasses.

Aris' 4JG2 may have excessive piston & ring to liner clearance. A compression test will validate this. If the engine fails the compression test, the only correction is an overhaul........ again. Very expensive!!!!

[rion]

same thoughts too... basta bad oil/fuel consumption after a recent overhaul. I can only think of poor mechanic's work, usualy clearance related.

[soundman]

Hi, bro, I was reading the forum regarding diesel fuel injector and I find it interesting and might get some idea how to solve my problem with my Mazda B2200 pickup with RF01 engine. I just got it top overhauled / machine shops, due to cut timing belt, after the top overhaul, change all the valves and other parts, the oil and oil filter and put new baterry. The engine runs OK but with some problems.

FYI I was not using the car for 2 years.

1) Hard Starting - already replace new batterry, fuel filter, air filter and clean the fuel tank. What I notice is that after I keep the car in the parking for few hours, always there is air in the fuel filter. i have to bleed to remove the air, then it becomes easy to start.

2) Another problem is can not overtake, losing power when accelerating especially at 60 to 80 kph. Mechanic says, sliding clutch which I believe is not the problem, however, in short we change all the complete clutch ass'y, still the same problem losing power when accelerating.

Now I checked with calibration shop, they told me they need to overhaul the fuel injector which I know I have done it before. Now I have a doubt whether to go for the fuel injector or check other part of the engine. Calibration is not cheap they were charging me 5,500 PHP.

Clucth ass'y was replaced but nothing change in the engine performance, during idling the engine works fine but when accelerating it looks like the firing is delayed and ther is fuel restriction, even though it can not run, it consumes a lot of diesel.

Any advise is well appreciated.

Tnx. Alex

[avi42174]

hi everybody,

can someone give me an idea about my 2c engine, townace.. i,m having a problem with idling,, at first, idling is ok, but after a couple of minutes, the engine shakes at idle, much more if a/c is on.. water temp is normal.

i hope u can help me guys.. thanks

[Dieseldude]

get some idea how to solve my problem with my Mazda B2200..... I just got it top overhauled..... change all the valves and other parts, the oil and oil filter and put new baterry. The engine runs OK but with some problems.

1) Hard Starting - already replace new batterry, fuel filter, air filter and clean the fuel tank. What I notice is that after I keep the car in the parking for few hours, always there is air in the fuel filter. i have to bleed to remove the air, then it becomes easy to start. Copper gaskets on the pump's suction fitting could be damaged. Filter base may be leaking. Fuel suction line could be restricted due to a sharp bend or internal blockage. Leak is quite difficult to detect as plumbing from tank to pump is on a vacuum. You will have to do a complete trace on this line.

2) Another problem is can not overtake, losing power when accelerating especially at 60 to 80 kph. Mechanic says, sliding clutch which I believe is not the problem, however, in short we change all the complete clutch ass'y, still the same problem losing power when accelerating. Injection pump is probably pulling in air. Temporarily replace the rubber hose from the fuel filter to pump with a transparent hose. No air bubbles should be seen on this line with engine running.

Now I checked with calibration shop, they told me they need to overhaul the fuel injector which I know I have done it before. Now I have a doubt whether to go for the fuel injector or check other part of the engine. Calibration is not cheap they were charging me 5,500 PHP. Injector/s may need to be checked if the engine knocks or runs rough. Correct the air suction leak before considering injector service.

Clucth ass'y was replaced but nothing change in the engine performance, during idling the engine works fine (your injectors are probably ok) but when accelerating it looks like the firing is delayed and ther is fuel restriction, even though it can not run, it consumes a lot of diesel. Check injection pump timing. Does engine smoke? Black or white?

Any advise is well appreciated.

Tnx. Alex

You're welcome,

Dieseedude

[Dieseldude]

hi everybody,

can someone give me an idea about my 2c engine, townace.. i,m having a problem with idling,, at first, idling is ok, but after a couple of minutes, the engine shakes at idle, much more if a/c is on.. water temp is normal.

i hope u can help me guys.. thanks

Your problem may be similar to Soundman's. Replace fuel filter, then check your fuel suction circuit for air bubbles or restriction.

[soundman]

get some idea how to solve my problem with my Mazda B2200..... I just got it top overhauled..... change all the valves and other parts, the oil and oil filter and put new baterry. The engine runs OK but with some problems.

1) Hard Starting - already replace new batterry, fuel filter, air filter and clean the fuel tank. What I notice is that after I keep the car in the parking for few hours, always there is air in the fuel filter. i have to bleed to remove the air, then it becomes easy to start. Copper gaskets on the pump's suction fitting could be damaged. Filter base may be leaking. Fuel suction line could be restricted due to a sharp bend or internal blockage. Leak is quite difficult to detect as plumbing from tank to pump is on a vacuum. You will have to do a complete trace on this line.


2) Another problem is can not overtake, losing power when accelerating especially at 60 to 80 kph. Mechanic says, sliding clutch which I believe is not the problem, however, in short we change all the complete clutch ass'y, still the same problem losing power when accelerating. Injection pump is probably pulling in air. Temporarily replace the rubber hose from the fuel filter to pump with a transparent hose. No air bubbles should be seen on this line with engine running.

Now I checked with calibration shop, they told me they need to overhaul the fuel injector which I know I have done it before. Now I have a doubt whether to go for the fuel injector or check other part of the engine. Calibration is not cheap they were charging me 5,500 PHP. Injector/s may need to be checked if the engine knocks or runs rough. Correct the air suction leak before considering injector service.

Clucth ass'y was replaced but nothing change in the engine performance, during idling the engine works fine (your injectors are probably ok) but when accelerating it looks like the firing is delayed and there is fuel restriction, even though it can not run, it consumes a lot of diesel. Check injection pump timing. Does engine smoke? Black or white?

Any advise is well appreciated.

Tnx. Alex

You're welcome,

Dieseedude

*******************************************
Hi,

I noticed that there are bubbles in the intake hose, but after bleeding the air out it's gone, then when I parked the car for few hours again there is air. I already replace it before, I will replace again with a better transparent hose and will put 4 clamps in each hose.

I'll check the copper gasket, maybe it's sucking more air instead of fuel.

I will correct the air suction before doing the injector calibration.

( I told the mechanic to adjust the timing and try to advance a little bit but he dont want to, for what reaon I do not know, I will rotate the injector and make it advance firing a little bit

Engine does smoke but not so dark, it's more like grayish but not white.

Tnx alex
***********************************

[Dieseldude]

I noticed that there are bubbles in the intake hose, but after bleeding the air out it's gone, then when I parked the car for few hours again there is air. I already replace it before, I will replace again with a better transparent hose and will put 4 clamps in each hose. Dami naman clamp yan. One good clamp on each end should be okay.

I'll check the copper gasket, maybe it's sucking more air instead of fuel. Also, check the flat sealing surface of the banjo fitting.

I will correct the air suction before doing the injector calibration. Good.

( I told the mechanic to adjust the timing and try to advance a little bit but he dont want to, for what reaon I do not know. He probably doesn't know how to properly time the injection pump, and/or he doesn't have the necessary tool/s.

I will rotate the injector and make it advance firing a little bit. The correct procedure is to time the pump according to specs, as this will assure you of optimal power and fuel economy. Mahal na diesel, di bah?

Engine does smoke but not so dark, it's more like grayish but not white. Does engine smoke at low idle, or during acceleration only?