Diesel Fuel Injection System Help Desk

[chorbz]

Hello! I'm a newbie in terms of diesel engines. My car is a pajero with a 4d56 engine tdic, a/t. The car has been running fine for the last 6 months. I recently changed the alternator belt and changed diesel from petron to shell. The problem is that the engine loses power when the air con compressor kicks in. the accelerator feels stiff and stuck until i turn off the aircon. when i turn it off, the acceleration and power returns to normal. This happened for around 10 minutes or so then returned to normal again with the aircon on. I drove the car this morning and it ran fine, flat road or uphill. i was wondering what the problem is. any suggestions? thanks in advance.

[Ry_Tower]

Hello! I'm a newbie in terms of diesel engines. My car is a pajero with a 4d56 engine tdic, a/t. The car has been running fine for the last 6 months. I recently changed the alternator belt and changed diesel from petron to shell. The problem is that the engine loses power when the air con compressor kicks in. the accelerator feels stiff and stuck until i turn off the aircon. when i turn it off, the acceleration and power returns to normal. This happened for around 10 minutes or so then returned to normal again with the aircon on. I drove the car this morning and it ran fine, flat road or uphill. i was wondering what the problem is. any suggestions? thanks in advance.

have you checked at baka sobrang higpit ng belt?

[chorbz]

The car ran fine after the belt was changed with a/c on. tension is ok as well. It just happened as i went up the tandang sora flyover.turned off a/c and everything went back to normal. turned a/c again then it happened. it occurred around 3 normal cycles of a/c turning on/off before returning to normal. does a 1992 pajero have an idle up? was thinking of the following:

1. bad fuel
2. fuel restriction
3. clogged/dirty fuel filter
4. timing/may tumalon na cog?
5. idle-up (kung meron)
6. kickdown cable?

i'm running out of ideas and trying not to overcomplicate the matter because it could just be as simple as a cable binding. one remarkable thing is that no matter how you press the pedal, the speed is constantly slow and weak. i hope it's not the turbo acting up

[Dieseldude]

The car ran fine after the belt was changed with a/c on. tension is ok as well. It just happened as i went up the tandang sora flyover.turned off a/c and everything went back to normal. turned a/c again then it happened. it occurred around 3 normal cycles of a/c turning on/off before returning to normal. does a 1992 pajero have an idle up? was thinking of the following:

1. bad fuel
2. fuel restriction
3. clogged/dirty fuel filter
4. timing/may tumalon na cog?
5. idle-up (kung meron)
6. kickdown cable?

i'm running out of ideas and trying not to overcomplicate the matter because it could just be as simple as a cable binding. one remarkable thing is that no matter how you press the pedal, the speed is constantly slow and weak. i hope it's not the turbo acting up

You posted six possibilities. Have you checked these?

[braveheart_php]

Sir DieselDude,

My ride is innova 06 d4d model E, once my aircon is ON my idle is a little bit shaky when my engine already heats up and when i'm changing gears for the first acceleration it rattles then the rattling is gone when my rpm is above 1T rpm...need advice to remove the rattling tnx

[Fotonista]

Wow, this thread is sooo cool and informative!!! Great work here Boss DD!

While I am on the process of back tracking, I'll post a question:

I currently have a pickup with the 4JB1 Engine, in the "far" future (got it brand new, 3000kms pa lang) can I:

1. Change the engine to a Turbo variant?
2. What are the possible engines that I can put in? (Minimal or no modifications)
3. How hard will it be to find and install the Turbo engine?
4. Who are the "recommended" shops?
5. The last question will be... COST. (^_^)

Thanks in advance and more power!!!

[airborn65]

Good day Dieseldude and I appreciate your kindness in accommodating all questions/problems.

I would just like to ask if replacement of injection nozzles always entails fuel pump calibration? I had my injection nozzles replaced and calibrated but since the mechanic said that the fuel pump doesn't seem to have any leak or something so he advised against tampering/calibration of fuel pump. Is this okay?

Thanks!

[Dieseldude]

Sir DieselDude,

My ride is innova 06 d4d model E, once my aircon is ON my idle is a little bit shaky when my engine already heats up and when i'm changing gears for the first acceleration it rattles then the rattling is gone when my rpm is above 1T rpm...need advice to remove the rattling tnx

This is quite difficult as I have no chance to see your car. Problem may be as simple as a deteriorated engine support/s, plus some loose exhaust pipe hangers.

[Dieseldude]

Wow, this thread is sooo cool and informative!!! Great work here Boss DD!

While I am on the process of back tracking, I'll post a question:

I currently have a pickup with the 4JB1 Engine, in the "far" future (got it brand new, 3000kms pa lang) can I:

1. Change the engine to a Turbo variant? Yes, if you are willing to spend.
2. What are the possible engines that I can put in? (Minimal or no modifications) This is up to you.
3. How hard will it be to find and install the Turbo engine? Go to Banawe and ask around.
4. Who are the "recommended" shops? I can't suggest any at the moment.
5. The last question will be... COST. (^_^) Only you can answer this after you've done the necessary homework.

Thanks in advance and more power!!! You're welcome....

[Dieseldude]

Good day Dieseldude and I appreciate your kindness in accommodating all questions/problems.

I would just like to ask if replacement of injection nozzles always entails fuel pump calibration? No, not necessarily.

I had my injection nozzles replaced and calibrated but since the mechanic said that the fuel pump doesn't seem to have any leak or something so he advised against tampering/calibration of fuel pump. Is this okay? Yes this is fine. Your mechanic was trying to help you. Are you happy with your car's present performance?

Thanks! You're welcome!!!!!

[airborn65]

Good day Dieseldude and I appreciate your kindness in accommodating all questions/problems.

I would just like to ask if replacement of injection nozzles always entails fuel pump calibration? No, not necessarily.

I had my injection nozzles replaced and calibrated but since the mechanic said that the fuel pump doesn't seem to have any leak or something so he advised against tampering/calibration of fuel pump. Is this okay? Yes this is fine. Your mechanic was trying to help you. Are you happy with your car's present performance?

Thanks! You're welcome!!!!!

Dieseldude, yes I am happy with my van's performance after replacement of injector nozzles. Less black smoke and more responsive. Thanks.

[eugene emmanuel]

good day sir dieseldude,

hingin ko po sana expert opinion/advice nyo regarding increasing the boost of 4d56tdic engines by putting washers underneath the wastegate actuator can, as per initiated by our respected tsikot top members..
i personally installed the modification on my ride (95 pajero local) and power difference is very much noticeable..

eugene

[eugene emmanuel]

is this safe for the engine sir?
any negative effects?

thanks in advance..

[Dieseldude]

good day sir dieseldude,

hingin ko po sana expert opinion/advice nyo regarding increasing the boost of 4d56tdic engines by putting washers underneath the wastegate actuator can, as per initiated by our respected tsikot top members..
i personally installed the modification on my ride (95 pajero local) and power difference is very much noticeable..

eugene

Wastegate was probably out of adjustment and dumping exhaust gasses.

[Dieseldude]

is this safe for the engine sir?
any negative effects?

thanks in advance..

The wastegate controls maximum turbo rpm, and should be adjusted to your engine's specs.

[eugene emmanuel]

thanks for the info sir.

[zed2d]

Sir Dieseldude may I ask what would happen if you would pre-heat the diesel fuel before it enters the injection pump? Any benefits or bad effects?

[reym]

Toyota 2C
Normally aspirated




A mechanic has replaced the water pump unfortunately there are no timing marks on the cam, injection or crank pulleys.
After the assembly, the engine took some time to start (run at idle for a few minutes then turned off the key). After the mechanic left It is still hard to start and it died. My brother filled the tank with one gallon of diesel. then it started but there is some terrible noise as if an injection noise or a high pitched metal noise.

Actually I left the mechanic with my brother and never witnessed the first or second start ( I had something important to do).

Is our camshaft or piston or valved already destroyed?

How do you time a diesel without ,markings?

What shall I do now? Thanks in advance..

Read more: http://tsikot.com/forums/engine-fuel...#ixzz1QOXcmb6J

[Dieseldude]

Sir Dieseldude may I ask what would happen if you would pre-heat the diesel fuel before it enters the injection pump? Any benefits or bad effects?

You will probably have a slight improvement on fuel consumption, and a decrease in power as well.

[dumbo921]

sir

just would like to know kung saan pwede magpacalibrate ng direct injection engine. sabi kasi sa akin pa calibrate ko daw ang injection pump ko... any place you know near cavite area lang po sana..

thanks