4JA1 Engine, Are there any problems?

[anthon05]

my 2001 xto mileage is 110k... problem ko yung white (blue) smoke evident sa morning or bagong start, pag mainit na nababawasan na.

ang question ko puede ba maayos ito? i mean if i bring it sa calibration shop mawawala ba white smoke emission?

or temporary solution lang. im planning kasi dalhin ito paayos ko or something.

baka normal lang sa 4ja1 na mausok at amoy unburned fuel?

[niky]

Blue smoke is oil. It should be evident in checking your dipstick whether the oil level is going down or not.

White in the morning is just water, that's normal.

[anthon05]

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.

[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.

[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?

[IsuzuSL2000]

mga sir meron n po ba nkasubok sa inyo ng oil catch can ? effective po ba or just a display lng

[Ry_Tower]

mga sir meron n po ba nkasubok sa inyo ng oil catch can ? effective po ba or just a display lng

Effective yan sa diesel most especially.

[aioshin]

for 4jai, none turbo, yung oil catch can is for crank case breather. For mine, since its so old, a lot of blowby exist, so with out oil catch can, if you check the intake of the engine, you will find a lot of oil that enters from the crankcase breather. If you put a catch can between the crankcase and intake, you will minimize or prevent oil contamination of the intake, which will make the engine burn the air from air intake and the fuel only, with out catch can, the engine may also burn the oil that contaminate the intake, which is supposed to be not ideal. Engine oil is supposed to be not included as fuel. Yung sa akin, diy lang.. so not that good looking.. I'll put a picture in a while.





Hopefully, i am not doing it wrong, so posting the image here so to get feedback if i might be wrong on this.

The reason why i by pass the pipe near the intake is that, I observed that there is a little pressure that might go from here to the crankcase breather pipe, and since I admit that this rig has more blowby, bypassing per my observation, will reduce the pressure during the engine is running.

[polibok]

hello Tsikot forumers.. here's hoping you can help me figure out this problem with my '95 TFR Pickup (4JA1)

Dec. 27, 2016: 3+ year-old battery (Motolite Gold) went completely dead even with recharging, so i replaced it with a new one (same model).. pag change ko grabe ambilis mag start kahit malamig kahit sanay ako sa one-click start ng TFR ko, mas bumilis pa lalo yung starting

After 2-3 weeks i noticed the cranking went really slow to the point na feeling mo parang discharged yung battery.. this was worse in the morning with a cold engine, gapang talaga parang 4-5 na slow crank before umandar.. one-click start lang po ang TFR ko for so many years kaya unusual talaga.. pano naman ma di-discharge eh brandnew yung battery, i asked my self.. i then suspected a parasitic drain so i had a mechanic check it, sabi nya maluwag daw yung negative terminal ng battery, so hinigpitan nya and i went okay nag one-click start ulit pero succeeding days it was the same story, back to slow-cranking in the morning or when matagal yung interval ng pag start ulit ng engine..

so yung theory ko ngayon is yung maluwag na connection partly drained the brandnew battery kasi nga maluwag siya so hindi na re-recieve ng mabuti yung karga ng alternator.. napa check ko na pala ang alternator, and it's in perfect shape 14+ volts yung karga nya at idle with aircon stereo lights etc.. tama po ba ang theory ko?

so plan ko ngayon is to have my brandnew battery fully-charged tapos tingnan ko anong resulta.. if gapang pa din yung cranking with a fully-charged battery, tight battery clamps, and a well-working alternator eh ibang problema na talaga baka glowplug or something else.. sana po may makatulong sa pag advice.. thank you!

[miked]

hello Tsikot forumers.. here's hoping you can help me figure out this problem with my '95 TFR Pickup (4JA1)

Dec. 27, 2016: 3+ year-old battery (Motolite Gold) went completely dead even with recharging, so i replaced it with a new one (same model).. pag change ko grabe ambilis mag start kahit malamig kahit sanay ako sa one-click start ng TFR ko, mas bumilis pa lalo yung starting

After 2-3 weeks i noticed the cranking went really slow to the point na feeling mo parang discharged yung battery.. this was worse in the morning with a cold engine, gapang talaga parang 4-5 na slow crank before umandar.. one-click start lang po ang TFR ko for so many years kaya unusual talaga.. pano naman ma di-discharge eh brandnew yung battery, i asked my self.. i then suspected a parasitic drain so i had a mechanic check it, sabi nya maluwag daw yung negative terminal ng battery, so hinigpitan nya and i went okay nag one-click start ulit pero succeeding days it was the same story, back to slow-cranking in the morning or when matagal yung interval ng pag start ulit ng engine..

so yung theory ko ngayon is yung maluwag na connection partly drained the brandnew battery kasi nga maluwag siya so hindi na re-recieve ng mabuti yung karga ng alternator.. napa check ko na pala ang alternator, and it's in perfect shape 14+ volts yung karga nya at idle with aircon stereo lights etc.. tama po ba ang theory ko?

so plan ko ngayon is to have my brandnew battery fully-charged tapos tingnan ko anong resulta.. if gapang pa din yung cranking with a fully-charged battery, tight battery clamps, and a well-working alternator eh ibang problema na talaga baka glowplug or something else.. sana po may makatulong sa pag advice.. thank you!

maruming starter o malapit na madedbol ang brushes.

[polibok]

maruming starter o malapit na madedbol ang brushes.

thanks po sir miked for your opinion.. i will keep that theory in mind in solving this problem

i will be getting the fully-charged battery today.. obserbahan ko muna for a few days, then starter na ipapa check ko

[vhazon]

sa totoo po wla ng solution ang smoke sa 4JA1 engine pwede lang pahinain ang usok.. sasakalin ang daloy ng fuel pero syempre babagal saka proper maintinance air filter, change oil every 6 mos pero masmagnda gawing every 5mos. pati sa trans mission ipag sabay narin, ipapacheck din yung turbo bka busted na,, , kahit ipa calibrate pa, hndi rin po maganda ang yung mga isinasalpak na anti smoke gadgets sa makina dahil pwedeng pasukan ng oxygen yun makina at mag moist, magkakaroon ng katok ang makina mo.. nalaman ko po yan sa kumpare ko mechanical engineer sya na may sariling talyer marunong din sya gumawa ng makina mekaniko sya bgo sya makgraduate...

[Sleepcare]

*vhazon-Baka naman nasanay ka lang sa innova. Hindi naman talaga maiiwasan ang hataw lalo na pag bago. Kasi hindi naman ata yung fuel pump ang sira kasi sabi mo nga eh medyo mabilis parin naman.