Diesel Fuel Injection System Help Desk

[soundman]

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. (OK, I will use only One good clamp both sides)

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 reason 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. (maybe)

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? (yes your right, let me have it adjusted by a reliable mechanic)

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?

During idle very small/less smoke, if I accelerate then starts to smoke dark gray but after a while in continuos high acceleration the smoke becomes less.

TNXS

[Dieseldude]

During idle very small/less smoke, if I accelerate then starts to smoke dark gray but after a while in continuos high acceleration the smoke becomes less.

Diesels don't normally smoke at low idle. Check timimg.

Keep us posted.

Bye

[batosai]

Sir Dieseldude and 4JGtootsie,

Maraming salamat po... Ok na hatak ng bighorn ko na lessen na din ang smoke, pasensya na at ngyn lang ako nakapag post nag ka problema kasi pc ko.

Sir ot na, share ko lang naging problema ko sa bighorn ko. Lately kasi naging mahina ang acceleration at masyadong maitim ang usok especially sa sudden acceleration. Ang problem lang pala is air filter buti na lang dito ko nag pa check up sa mga kaibigan natin sa tsikot, baka kung sa iba ko nag pa check e recomend nila agad for calibration at perahan lang ako.
Sa mga balak mag pa calibrate dyan dito na kayo sa experto at hind manloloko.., Just look for Jake or Budoy hehe.

Maraming salamat po ulit!!!

[bruswayne]

ask ko lang,out of warranty na innova ko,i think my unit needs replacement on fuel pump (kaso out of warranty nga) experince choking na,where ba any recommedation for my pump to be check?thanks

[4JGtootsie]

Kung D4D yan sir just bring at Central Diesel sa Quezon Ave beside Capitol Medical, we have serviced Innova and Hi lux with similar problems. Look for Jake or Ramon 4113711 to 13

[promdiboy]

sir dieseldude, good day, I had my pajero serviced at central diesel clinic a few years back and its still doing great, pag may question sa pajero gen 2.5 calibration parati kong suggest to go to your shop, sip sip ba? I was wondering if you could shed some light sa problems ng 4m40 injection pump namin, usually we experience hard starting sa umaga lang then papalya siya, then restart 3 to 4 times uli ganun parin, but pag uminit na wala na kaming problems, no balck smoke, power is still very good and fuel economy is still normal, naglalaro kasi sa mind ng owners bakit calibration agad ang solution despite pag uminit siya ok naman na, can you please help shed some light kung aling parts ang nagcacause ng hardstaring and namamatayan sa umaga? and what can we do to prevent this? or is it just normal wear and tear. sa akin kasi 70k palang nagloko na, and so far ive done 35k na, so malapit na uli ako bumalik sa inyo. normal wear and tear lang ba to? kasi yung 4d56 na l300 delivery namin has already done 200k and hindi pa napapacalibrate. no problems pa so far.

question 2 sir, meron ba kinalaman ang calibration sa shifting ng auto tranny? may isang member (larshell) kasi na may delayed shifting na nangayari after niya pacalibrate. can you confirm this sir? post ko yung reply niyo sir sa gen 2.5 threads, or even better baka pwede niyo dalawin yung thread namin, thank you sir, and more customers to central diesel clinic,

[Dieseldude]

sir dieseldude, good day, I had my pajero serviced at central diesel clinic a few years back and its still doing great, pag may question sa pajero gen 2.5 calibration parati kong suggest to go to your shop, sip sip ba? I was wondering if you could shed some light sa problems ng 4m40 injection pump namin, usually we experience hard starting sa umaga lang then papalya siya, then restart 3 to 4 times uli ganun parin, but pag uminit na wala na kaming problems, no balck smoke, power is still very good and fuel economy is still normal, naglalaro kasi sa mind ng owners bakit calibration agad ang solution despite pag uminit siya ok naman na, can you please help shed some light kung aling parts ang nagcacause ng hardstaring and namamatayan sa umaga? and what can we do to prevent this? or is it just normal wear and tear. This is a common problem on 4M40 injection pumps. Failure is in the drive shaft, drive shaft bushings, and oil seal, allowing air to enter the pump when engine is shut down for a few hours. Pump has to be repaired and calibrated, no other way.

question 2 sir, meron ba kinalaman ang calibration sa shifting ng auto tranny? Yes.

may isang member (larshell) kasi na may delayed shifting na nangayari after niya pacalibrate. can you confirm this sir? post ko yung reply niyo sir sa gen 2.5 threads, or even better baka pwede niyo dalawin yung thread namin, thank you sir, and more customers to central diesel clinic, Mounted on top of the injection pump's control lever is a throttle potentiometer. This is a black 3 wire variable resistor which controls transmission shift point. Electronic adjustment is performed while the injection pump is on the test stand.


Bye, Godbless,


Dieseldude

[promdiboy]

thank you sir diesel dude for the quick reply, I copied your answer sa kabilang thread, does this mean we can opt not to replace the nozzle tips when this happens? since the problem is the driveshaft, sorrry sir newbie sa injection pump, what causes driveshaft failure? sa diesel qulaity ba or the way we drive?

[Dieseldude]

Thank you sir diesel dude for the quick reply, I copied your answer sa kabilang thread, does this mean we can opt not to replace the nozzle tips when this happens? Yes. Morning hard start is most often not related to nozzle wear.

Since the problem is the driveshaft, sorrry sir newbie sa injection pump, what causes driveshaft failure? I consider this as normal wear. We do an improvement on this area everytime this pump type comes in for service; and we have been very successful in improving the pump's service life.

Sa diesel qulaity ba or the way we drive? No and niether....

[promdiboy]

thank you sir dieseldude for taking time to answer my question, its good to know na improved version na pala pag nagpacalibrate sa inyo, I hope mas tumagal naman yung injection pump ko ngayon,