4JA1 Engine, Are there any problems?

**digitel** · November 28th, 2009 03:11 PM

Hello there, I just want to know if anyone of you had experienced any problems with this engine?

Kasi kami as of now wala pa. We have 2 isuzu with this engine =)

Reliable talaga itong engine na ito?

**niky** · November 28th, 2009 04:04 PM

Two Crosswinds. So far, no trouble. Have had to have a mechanical pump fixed at 150,000 kms on one, but it was poorly maintained. The one that I'm responsible for is at 180,000 kilometers, much of it in traffic and at high speed. So far, it doesn't belch blue smoke, doesn't eat oil, and still gets around 10-14 km/l on the highway. (14 when I'm actually patient enough to drive it at a sedate 60 km/h.)

**ramledi** · November 29th, 2009 12:19 PM

i have 2 hilanders and my main problem is eliminating the smoke emission problem.

its kinda embarrassing when accelerating hard. too much smoke when looking at the rear view mirror. but its normal for a 4ja1 hehehe

**digitel** · November 29th, 2009 08:29 PM

^ I agree, i find it also embarrassing T_T. Pero minsan hindi na naman siya masyado mausok. Pero pag malamig masyado ang weather kahit naka idle minsan mausok siya...

**4JGtootsie** · November 29th, 2009 09:22 PM

Originally Posted by digitel

Hello there, I just want to know if anyone of you had experienced any problems with this engine?

Kasi kami as of now wala pa. We have 2 isuzu with this engine =)

Reliable talaga itong engine na ito?

Its reliable, solid and efficient.
Problem is starting it pag mababa na compression (high mileage).
Direct injection require high compression(heat) to fire, without glow plugs it will be a long and shaky start.

**ExROLLA** · December 3rd, 2009 09:02 AM

4ja1 problem: white smoke emission... takaw sa sita, specially in makati and pasig... kahit bagong unit, talagang obvious ang white smoke...

**anthon05** · December 3rd, 2009 07:15 PM

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** · December 4th, 2009 10:22 AM

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** · December 4th, 2009 07:25 PM

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** · December 7th, 2009 04:59 PM

Originally Posted by 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.

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