2003 RA Rodeo diesel help

Murray
Although I am not very familiar with the earlier engine I think they use oil pressure to operate the injection system.
Sometimes O rings on the injectors give trouble and the oil pressure to operate them is less.

Also, I believe the engine oil level and quality is important.
if there is O rings leaking it may dilute the engine oil and be too thin to operate the injectors correctly/fully.

It would appear a uniform ie over 4 injectors type problem so look to see if oil is thinned by diesel or the level is low.
I think somewhere there is your problem.

Someone who owns one and has had the same, not uncommon, problem may know more.

Cheers
Ross M

Murray - See if this thread has any useful info in it for you - it appears to be a common 4JJ-1 Isuzu problem.

http://forum.australia4wd.com/index.php?/topic/23127-fuel-issues-with-3ltr-4jj1-common-rail-isusu-rodeo-motor/

Cheers, Ron.

Hi Murray,

It appears that you have the 4JH1-TC (non common rail) engine (from 2001 to 2006). The 4JJ1 is the later (common rail) engine which was introduced in 2007. The 4JB1 engine precedes your model (it was the 2.8Lt). I have the same engine as you do in my 2004 RA 3.0iTD. I had a look in my workshop manual and it says this:

Troubleshooting (engine):

Insufficient power/acceleration: (the closest category I could find to your problem)

1. Air filter condition? (You've already checked that).
2. Any air intake leakages? (You've checked that).
3. Fuel filter element condition? (You've checked that.)
4. Check injection pipes
5. Any water contamination? (You've checked that.)
6. Injection spray pattern?
7. Compression pressure?
8. Any exhaust blockages/leaks?
9. Waste gate control actuator hose condition?
10. Waste gate operation OK?
11. Is turbocharger working (You've checked that.)

How does the engine behave? Does it smoke, is it hard to start, does it idle smoothly? I've never experienced this kind of problem before with my one. I'm thinking it's ECM related, though don't quote me on that.

I shall do more research.

Hope this helps.

Cheers, Tim.

hi
it could be a blocked air intake
or a baffle has broken away inside the muffler blocking the exhaust gases
ive had that problem with an older vehicle once and it was the last thing
I looked at took the tail pipe off and rammed a crowbar up the muffle a few times and bingo no more restrictions and full revs again
your 2003 model if its still on original muffler check it out as above may be the case
cheers

Have you removed the fuel tank cap and checked to see if there is a vacuum?
ie. blocked fuel tank breather?

.

Try replacing the throttle position switch. Had a similar problem a couple of years ago, send engine into limp mode.

As said the motor has now stopped and has logged a code for the high pressure fuel solenoid so its pointing to the injector pump. Will let you know how I finnish up. Thanks for your replys.

Murray

The Rodeo is now going again after we fitted a new injection pump. The problem with it was the high pressure fuel solenoid within the pump.