4JA1 Engine, Are there any problems?

**ChoyJo** · June 11th, 2011 05:14 PM

Originally Posted by sanik

Hello mga sir ask ko lang may naririnig kasi akong noise coming from transmission parang nag huhumming sya kapag naka shift na sya from 1st gear to 5th gear and reverse pag naka neutral wala naman ako naririnig na humming. naririnig ko lang yung humming sound kapag umaarangkada na kapag binitawan ko naman yung accelerator pedal nawawala yung humming sound atsaka ang hirap ipasok ng kambyo parang may sabit tapos yung clutch ko parang ang tigas.

Sir check mo baka kulang lang sa langis transmission mo..

**ChoyJo** · June 11th, 2011 05:15 PM

Originally Posted by sanik

Hello mga sir ask ko lang may naririnig kasi akong noise coming from transmission parang nag huhumming sya kapag naka shift na sya from 1st gear to 5th gear and reverse pag naka neutral wala naman ako naririnig na humming. naririnig ko lang yung humming sound kapag umaarangkada na kapag binitawan ko naman yung accelerator pedal nawawala yung humming sound atsaka ang hirap ipasok ng kambyo parang may sabit tapos yung clutch ko parang ang tigas.

Sir check mo langis ng transmission mo baka kulang lang o baka kailangan na ding palitan..

**tabuso286** · June 14th, 2011 02:26 AM

Originally Posted by ChoyJo

Sir check mo langis ng transmission mo baka kulang lang o baka kailangan na ding palitan..

Possible kung di kulang sa gear oil transmission mo, malamang kailangan mo ng ipa overhaul ung transmission mo, palit pressure plate, clutch disc/lining, release bearing, clutch fork (kung kinakailangan lang) at gear oil syempre.

**vhazon** · June 26th, 2011 08:45 PM

madali masira ang busing matagtag kasi ang likuran

**vhazon** · June 26th, 2011 09:04 PM

sir may problema ako sa crosswind xto 02 A/T matigas at late sfifting, nakabili kami ng brandnew innova G A/T 2011 m0del, naka isang linggo ko nang gamit.. binalikan ko yung crosswind na gamit ko dati, may napansin ako pakiramdam ko late shifting pero mabilis naman.. sa innova kasi pag apak mo ng pedal ang lakas humataw ang bilis mag shift ... hndi ko pansin dati dahil hndi pa ako nagdadrive ng ibang sasakyan.. sa tingin nyo ano po ang sira ng crosswind ko? fuel pump or transmission? bago na kasi lahat ng filter.. air filter, fuel oil filter, pati ATF bago rin..

**vhazon** · June 26th, 2011 09:16 PM

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** · June 26th, 2011 09:44 PM

*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.

**ydrion** · June 30th, 2011 12:45 PM

hello po sir miked. hingi po sana ako ng engine manual kung pwede. pkisend na lang po sa ydrion*yahoo.com maraming salamat po

**larjhones** · July 3rd, 2011 02:08 PM

Hello fellow 4ja1 owner:

I'm a newbie here and would like to seek your expertise regarding my unit Isuzu Hilander SL '97 with isuzu 4ja1 engine.
These are my issues:
A. Black smoke comes out in first few seconds upon engine start-up and followed by too much smoke (white to grayish white) during engine running idle but reduces when engine is hot.
B. Along with the smoke is a strong smell of which I think unburnt diesel.[/B]

What do you think are the possible culprit? Other conditions listed below for your reference if anyone can help me troubleshoot my problem.
1. Odometer reading 95,000+; i'm not sure if it wasn't tweaked by previous owner.
2. Doesn't eat up oil I guess 'coz I rarely consumed 500ml oil for top-up in between oil change.
3. Replaced fuel filter and cleaned water separator.
4. Replaced air filter with the L200 cartridge. Logically, I found it less restrictive in terms of air flow since it fully perforated all around allowing more air with less restriction. Unlike air filter intended for 4ja1 which is half mask perforated cartridge.
5. Checked nozzle tips opening pressure and witnessed it still opens at required opening pressure based on 4ja1 manual. Though, one nozzle found to have not spraying the correct pattern so it was dismantled and cleaned, fortunately the spray went okay as others.
6. Used biodiesel on several full tanks with recommended mixture specified on the bottle, MC55. Even used it twice 100% biodiesel feed directly to injection pump (supply/return) until 1 liter of it consumes and rev the engine at several RPM's on two separate occasions.
7. Check valve clearance in cold condition at 0.014 inch as specified on the manual.
8. Opened oil filler cap and oil dipstick while engine running but no oil spitting observed not unless if I rev the engine.
9. Average km/Li: Hiway = 14, City = 10, Mixed = 12. A/C on.
10. Regularly flushed-out carbon from exhaust pipe with soap and water.
11. Oil changed: every 5,000 km or 6mos. with minimum required SAE40 or 15W-40 oil, CD to CI grade shell or petron.
12. Only light to moderate driving conditions mostly 60% hiway and 40% city
13. One click start even on cold and rainy days.
14. No significant loss of power detected, pick-up is still still okay even if fully loaded.
15. No heavy smoke on high RPM's not unless if uphill and within wrong range of speed and rpm.
14. Even run the engine with no air filter, still the annoying smoke persists.
15. Definitely not blown head gasket I think 'coz I rarely top-up coolant on my radiator. Also, no milky residue or oil presence on radiator cap and no significant air bubbles observed with engine is running.

With all these things I've done so far, do you think guys something I missed? Or do I really need to check / service my injection pump?

Thank you very much to all and more power!

**boy ok-ok** · July 4th, 2011 02:19 PM

good day to everyone, I have a xtrm hilander 2000, problema ko pag mag park ako sa incline e bumababa yng RPM at namamatay yong engine kahit ilagay ko pa sa neutral e namamatay pa rin. parang napuputol ang supply ng krudo.nararanasan ko ito pag sa mga incline lang.sa mga nakakaalam ng solusyon, patulong po nlang lalo na sa mga naka experience na.salamat in advance