4JA1 Engine, Are there any problems?

[ExROLLA]

so ok lang yung white smoke? ang ayaw ko lang talaga yung lakas ng amoy

ng diesel fuel sa usok. yung white smoke diminishes as i use the vehicle, pero

yung amoy ng unburned fuel medyo malakas.

aside from the white smoke emission, the bad odor of unburned fuel is really annoying... ganyan yata talaga ang 4ja1 -- direct fuel injection daw kasi, according to another article i read in another thread... the bad odor was gone for a while after i had my nozzle tips cleaned and calibrated, but after a few weeks, i noticed that the smell of unburned fuel is back

[anthon05]

so ibig sabihin useless din palinis ng injectors and nozzles.. sa mga high

mileage kasi kailangan daw palinis injectors and possibly replace nozzles.


pero napansin yung ibang crosswind parang d naman malakas amoy ng unburned fuel.

meron ba naka experience na nagpaayos tapos naging d mausok?

[ramledi]

ako nung magpa-calibrate ako last 5 months ago humina ang white smoke pero after a month or two eto nanaman. ang ginagawa ko ngayon para mabawasan ng konti yung white smoke kapag bumibyahe ako ng slex pedal to the metal ako for some few seconds or so at sa tingin ko na lessen naman ang white smoke.

[fabilioh]

ako nung magpa-calibrate ako last 5 months ago humina ang white smoke pero after a month or two eto nanaman. ang ginagawa ko ngayon para mabawasan ng konti yung white smoke kapag bumibyahe ako ng slex pedal to the metal ako for some few seconds or so at sa tingin ko na lessen naman ang white smoke.

sir saan ba ok mag palinis ng injectors and nozzles, at calibration? Yung hilander ko rin kasi 155k kms na, malakas na rin white smoke.

[4JGtootsie]

sir saan ba ok mag palinis ng injectors and nozzles, at calibration? Yung hilander ko rin kasi 155k kms na, malakas na rin white smoke.

Sir call 4113711 and look for Ramon.

[fabilioh]

Sir call 4113711 and look for Ramon.

Thanks, saang shop ba sir si Ramon?

[ExROLLA]

bought my 97 hilander six months ago... first time to have a diesel powered vehicle... have to renew its registration next month (january)... with the white smoke emission and smell of unburned fuel, are these indicators that it fail the required emission test? hope to hear from you guys in this regard... TIA

[4JGtootsie]

Thanks, saang shop ba sir si Ramon?

Taga Central Diesel yan mabait, madaling kausap, at di ka lolokohin.
Yan picture niya sa avatar.

[Dave John]

Agree talaga aku sa inyo mga fellow tsikotters masyado talaga mausok at saka tapang ng amoy. Everytime nga pag pinapainit ku ang engine uma.alma yung mother ku kasi umaabot sa aming bahay ang usok. Hehe!

Malakas tlaga mg vibrate ang xwind tapos mabagal din ang takbo.
Pero as of now wala pa naman akung na encounter na major probz sa xwind. maintenance lang....

[vhazon]

madali masira ang busing matagtag kasi ang likuran

[TAMSDep]

Sir call 4113711 and look for Ramon.

Hello, mga Sirs, patulong naman dun sa problem ng hilander ko. Nabili ko ng 2nd hand few months ago, ok nung una takbo kaso lang ngayon eh namamatay engine sa idling (700-800 rpm). Pag nagbrake sa stop light at nagneutral ako, mag off pa rin engine. pero kung naka engage gear say sa 2nd at nakatapak sa clutch hindi mag off engine. Then, kung mag neutral na (kasi naka red light na) minsan mamatay pa rin. Pinalitan ko na fuel pump, fuel filter, pina baba ko na fuel tank, nilinis na fuel line. Ganoon pa rin. Tinest ang fuel injector kung may problem. Nag direct ng fuel supply from a plastic gallon without passing the fuel pump and fuel filter. ok naman. di nag off at pino ang takbo ng engine. Saan na kaya ang problem?? Gustong buksan ng mekaniko yung fuel injector eh mukhang ok nman. di nga nag off engine eh nung direct ang fuel supply. di kaya nahihirapan yung fuel injector na humigop kung may filter at pump?

[ramledi]

Hello, mga Sirs, patulong naman dun sa problem ng hilander ko. Nabili ko ng 2nd hand few months ago, ok nung una takbo kaso lang ngayon eh namamatay engine sa idling (700-800 rpm). Pag nagbrake sa stop light at nagneutral ako, mag off pa rin engine. pero kung naka engage gear say sa 2nd at nakatapak sa clutch hindi mag off engine. Then, kung mag neutral na (kasi naka red light na) minsan mamatay pa rin. Pinalitan ko na fuel pump, fuel filter, pina baba ko na fuel tank, nilinis na fuel line. Ganoon pa rin. Tinest ang fuel injector kung may problem. Nag direct ng fuel supply from a plastic gallon without passing the fuel pump and fuel filter. ok naman. di nag off at pino ang takbo ng engine. Saan na kaya ang problem?? Gustong buksan ng mekaniko yung fuel injector eh mukhang ok nman. di nga nag off engine eh nung direct ang fuel supply. di kaya nahihirapan yung fuel injector na humigop kung may filter at pump?

yung injection pump na check na ba? baka kailangan na ng calibration.

[weisshorn]

Hello, mga Sirs, patulong naman dun sa problem ng hilander ko. Nabili ko ng 2nd hand few months ago, ok nung una takbo kaso lang ngayon eh namamatay engine sa idling (700-800 rpm). Pag nagbrake sa stop light at nagneutral ako, mag off pa rin engine. pero kung naka engage gear say sa 2nd at nakatapak sa clutch hindi mag off engine. Then, kung mag neutral na (kasi naka red light na) minsan mamatay pa rin. Pinalitan ko na fuel pump, fuel filter, pina baba ko na fuel tank, nilinis na fuel line. Ganoon pa rin. Tinest ang fuel injector kung may problem. Nag direct ng fuel supply from a plastic gallon without passing the fuel pump and fuel filter. ok naman. di nag off at pino ang takbo ng engine. Saan na kaya ang problem?? Gustong buksan ng mekaniko yung fuel injector eh mukhang ok nman. di nga nag off engine eh nung direct ang fuel supply. di kaya nahihirapan yung fuel injector na humigop kung may filter at pump?

Nagawa mo na halos lahat ng possibilidad pero meron ka nakalimutan na importante.
Ito ang na experience sa 1997 highlander (sorry not sure of the exact year model): Check mo ang dulo ng suction pipe sa loob ng fuel tank. Possible na dumikit na dulo nyan sa bottom plate ng tanke kaya pag nag pump ng fuel walang mahihigop. Ayosin mo ang lay-out ng suction pipe na palaging may clearance between bottom plate. Pwede rin lagyan ng side cut or hole ang dulo ng suction pipe para sigurado na makadaan ang krudo. Ito muna gawin mo bago ang iba pang naiisip o suggestion ng iba nating kasamahan.

Hope this help.

[jonramirez74]

I have a 95 Ls Pickup with 4JA1 engine, no problem so far. tried to ask a couple of mechanics to overhaul, ayaw buksan. except for the usual usok. Normal lang daw yung white na usok. hehehe. Problem nga yung mga nang huhuli ng smoke belching. Btw, does anyone know kung ubra mga kabit ng turbo sa stock 4ja1? Anu con's and pro's on having it? How much does it cost?

[niky]

I have a 95 Ls Pickup with 4JA1 engine, no problem so far. tried to ask a couple of mechanics to overhaul, ayaw buksan. except for the usual usok. Normal lang daw yung white na usok. hehehe. Problem nga yung mga nang huhuli ng smoke belching. Btw, does anyone know kung ubra mga kabit ng turbo sa stock 4ja1? Anu con's and pro's on having it? How much does it cost?

Just buy a surplus Crosswind turbo. With the low boost (mga 6 psi), it won't require much adjustment to the fuel pump to make it run... just bolt it on and you're done!

You can go one better by using a 4JB1 turbo, but that might require more fabrication and you definitely want to adjust the fuel pump calibration to match the turbine.

[Bags™]

4JA1 - very reliable, easy to maintain, matibay, and fuel frugal diesel engine. Had one with my 92 Isuzu LS Pick-up with 281,000+ kilometers in it. Tamang maintenance lang talaga ang sikreto. Common lang talaga dito yung medyo mausok. Sa akin ganon din compared sa iba naming sasakyan (Intercooler Turbo 4D56, TDCi, and Hyundai CRDi) pero hindi naman mausok na akala mo nagpapaapoy ka ng mga dahon at sobrang itim. Normal na usok lang from exhaust and the smell is like normal although yes compare sa ibang engine namin medyo (iba ang amoy, but still amoy diesel pa din). Almost 70% of the parts in my pick-up are still the original parts when it was bought brand new way back in the 90s. Only problem experiencing right now is this:

1. It is somewhat shakey (maalog) especially pag naka-ON ang A/C. Sa lower idle speed nya the car starts to vibrate abot sa cabin and yes noon malakas. At first I thought engine supports, but then we had it fixed with the help of our mechanic na may ganon din na sasakyan, nilinis lang pala yung Air Filter kasi madumi na even konting lumot meron na plus nilinis din also yung Fuel Pump because may tubig na daw i don't know gaano kadami. It went back to normal again, hindi na maalog sa kahit anong idle speed range and we were able to bring down the idle speed to normal which is 850 rpm. The only thing is it's starting to rattle now again pero very very minimal lang and very very weak na rattle lang pero syempre lahat naman tayo metikuloso sa sasakyan natin diba? i'll have it checked nalang again (the fuel pump) and I will try to clean the air filter again this time and maybe change it next week. We'll see the difference kung andoon talaga. But then if hindi pa din mawala ang rattle/vibration sa paglilinis ng air filter and fuel pump, maybe I really have to check the engine supports.

Over-all this 4JA1 engine is a very reliable diesel engine. Kahit yung maikarga mo dito na fuel (by accident) ay madumi or may water or whatsoever (hindi naman maiwasan ito sa ibang gasoline stations esp sa far-flung areas), never mo ma-eexperience na masisiraan ka ng engine. Base on my experience, pupugak lang ng konti but when nasunog na yung fuel, okay na sya. Unlike some of my friend's CRDi engines, nadumihan yung fuel. Boom! Sira na injectors

[Syuryuken]

tibay ng makina na yan problema lang talaga makupad tinatakbuhan nga ng mga 800CC na sasakyan

[n_spinner06]

tibay ng makina na yan problema lang talaga makupad tinatakbuhan nga ng mga 800CC na sasakyan

Yung amin hilander xtrm yr 2000 non-turbo 4ja1. Hirap mag-100kph pedal to the metal na unless medyo downhill kahit hindi loaded. Madalang itakbo ng highway to halos purely city driving. Normal ba to?

[shelu]

Yung amin hilander xtrm yr 2000 non-turbo 4ja1. Hirap mag-100kph pedal to the metal na unless medyo downhill kahit hindi loaded. Madalang itakbo ng highway to halos purely city driving. Normal ba to?

check mo fuel filter at sedimentor, baka barado na po sir. palit air filter din po sir. if ganun pa rin, pa check mo ang injection pump sir. o baka ang preno mo sir, nakakapit palagi. many possibilities but start at the basic.

[aioshin]

ano naman kaya problema kung paakyat, parang hirap, yung stop ka then paakyat na, so start ka sa first gear, tapos nahihirapan... ano kaya pasibleng problema... new fuel filter, new air filter, just cleaned water separator. Napansin ko lang, almost half yung temperature ng engine sa gauge... sentomas ba to nang isang engine problem?