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Pressure buildup in 4ja1 engine - Cars & Trucks

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Go to get the topic and fix it.
God bless you

Posted on Jul 25, 2013


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1 Answer

I need timing diagram for Isuzu 4JA1 engine

posted 2 times now. left out CAM.
we are USA form, we are not African
we dont have KB trucks. here.
no books.

search ,get lucky.
here is a fixya search
see any thing.

last i look for this engine on web
and find this book,
page 23 is injection timing'

page 100 cam timing,(pdf page)
4ja1 and 4jb1.

Jan 04, 2017 | Isuzu Cars & Trucks

1 Answer

How do I set 2012 Isuzu 4ja1 engine timing gears. Send pics

2012 something,
NO CAR actually stated !
books by year and name.

try this? use google and pray no lies?
ever google, we can do it for you, see?

i looked and it seems the JA and JB have same gears
(crossing fingers)
so first google hit lands

best i can do, with NO CAR stated.

Feb 27, 2016 | Isuzu Cars & Trucks

1 Answer

I need Torque settings for a isuzu 4ja engine please

what car? and model or truck....all that, is how data is INDEXED
what year?
what country.?
4ja what.
please !

Nov 27, 2015 | Isuzu Cars & Trucks

1 Answer

What's your question?my Isuzu 4ja1 engine .my problem is the oil comes from deep stick

i think you mean
when running the engine
the DIP STICK seal as it fits the dip stick tube end. leaks oil
this a bad PCV valve.
excess crank case pressures.... cause by not doing service on car.
or worse a very worn out engine with huge blow by gassed.
is engine miles high? over 300k? miles?
or the dips stick seal there is bad.... looking at it tells you that.

Sep 20, 2015 | Isuzu Cars & Trucks

1 Answer

How to install rear crankshaft oil seal 4ja1 engine

the word HOW , means, (and install) does that mean its out now.?
or is the question , how to get to it and replace it?
all steps, every single step or just where is it.?
is this your first seal job ever. or first engine internal work ever?

1994 isuzu rodeo here, has no such engine. (USA) 4Ja1 diesel. My guess i you posted to wrong car because
Fixya does list your car, because we dont have your car.

so i cant look it up for you. try saying your country and real name of car... (a D-MAX is Asia?_) what?
buy the factory book, on the unstated car? or truck>?

is the engine in or out of car?
is the transmission in or out of car.?
we can't guess any of this.
nor tools at hand, like engine lift's etc.

you bought a :
the factory seal?
or the after market nice double lip seal.
and do you plan to use the correct tool shown in the shop manual
or make your own. or pound it in with a hammer....(ouch)

below is ,cut from free FSM book, see the red arrow.
that is the rear crank seal. 4ja1 and jb1
as you can see its behind the flywheel (or flexplate atcmb)
The year is important is it really 1994?
so engine out, or trans out. (you pick)
then replace it,
one way to learn is to read TIMKEN bearing white papers
on how do it right, and the 25 ways wrong. all in one sitting.
19210271-ok41tn3ceclelms2tcg51215-3-0.jpg as seen here

Aug 05, 2013 | 1994 Isuzu Rodeo

1 Answer

Timing marks for 2.5 isuzu diesel pumo

Freek Rohrbeck wants answers to this question
are so lazy you cant start your own post?
1: no country stated.
2: no year (1990?)
3: no engine, (freeks engine) not ANON. 2.5 Diesel.?
4: we dont have PUMO in usa, so where are you?
5: timing a cam, or timing a fuel pump, how can we guess that?

ahhhhhh PUMO is PUMP ????? wow. prefect place for a typo..

its no USA "pickup" at all.
2.5 L 4JA1-T
is this your true engine name
if yes, google it and find free facts (or endless lies)
there is turbo , non turbo and twin turbo, on newer cars)

here we can google all day

May 08, 2012 | 1990 Isuzu Pickup

1 Answer

Hi there! can u help me regarding my 2nd owned isuzu hilander with 4ja1 engine. this pertains to the oil dipstick lever because during the course i drove the vehicle in long drive specially during hot and...


May 25, 2011 | Isuzu Pickup Cars & Trucks

1 Answer

My isuzu 4JA1 engine tends to exhaust white smoke

White smoke means that you have a coolant leak. Two possible causes for that - either the head gasket is punctured and must be replaced or the head itself is damaged and must be welded by an expert. 
Either way the engine must be dismantled to make a full diagnose and repair.

Aug 02, 2010 | 1995 Isuzu Pickup

1 Answer

Engine swap

The 4JX1 used the 4L30-E automatic transmission behind it...I think the 4JA1 has a different centerline measurement on the bellhouseing.. if thats the case an adapter plate would be needed.
It can be done, but it's probably not going to be cost effective,

May 23, 2009 | 1999 Isuzu Rodeo

1 Answer

Timingbelt position

AFAIK, isuzu 4JA1 has no timing belt. it is a gear drive timing system.

Jun 07, 2008 | 1995 Isuzu Pickup

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