need vac hose routing trooper 4xj1 3.0 td

**4JGtootsie** · December 30th, 2007 06:18 PM

White smoke. How did the problem started? Overheating?
Did they check c. head warpage? Checked cylinder head bolt torqued equally after run. Mahirap talaga if you cant see/read the specific culprit according to the computer. Maraming extra sensors ang X1 because of the HUIE. Wala pa akong kilalang expert sa engine na yan I hope you would be the first. Goodluck bro!

**t2erns** · December 31st, 2007 08:14 AM

yeah brother i dont want to be beaten by this animal, i just need to see what the pcm is seeing i dont think this engine will beat me otherwise i'll burn him to death (he he he).i think isuzu itself was beaten by this animal that's why they decided to junk this engine he,he,he. so the struggle will find a new chapter in the new year..... hope i'll not loose my sanity....

**4JGtootsie** · December 31st, 2007 10:03 AM

Never say never attitude!!
Believe me once you mastered that animal magiging mayaman ka.
Saan mo ginagawa yung sasakyan? One time puntahan kita.
Si sonjeffrey has worked on GMs si kbr naman ganoon pa rin. Hope our friends can really help you in your actual/realtime project.

**t2erns** · December 31st, 2007 10:15 AM

the trooper is at my friend's shop in v. luna. you're welcome to see the animal anytime next week after the new year holiday (my cel 09202001445). thanks sir for your interest with this project na nadamay na rin ako sa problema, he he. HPPY NEW YEAR

**4JGtootsie** · December 31st, 2007 12:53 PM

Text kita. Happy New Year to you and to all my tsikot brothers!!!

**Dieseldude** · January 1st, 2008 01:40 PM

Hi 4JGtootsie / 2terns,

Happy new year to you as well as our tsikoters group.

FYI, we don't work on the 4JX1 as the Tech2 scanner is available to Isuzu service dealers only. We always recommend that the customer bring his car to Isuzu.

However, I admire you for your persistence and wish you success. We have had some experience on this engine so here are my thoughts:

Use the recommended lube oil for this engine as it's purpose is not only for lubrication, but for high pressure injector actuation as well. Injection timing may be delayed if oil foams. We were able to correct some white smoke problems by just using the correct oil grade.
Check the catlyctic converter. It may accumulate soot if the engine is not driven hard. Hard driving sometimes cleans this up.
Check the butterfly valve on the engine's intake manifold. It may be closed or partially closed due to wrong vacuum line routing. Insufficient air = poor diesel ignition = white smoke.
Check the cylinder head gasket. This engine can use 3 types of cylinder head gaskets with varying thicknesses to provide the correct compression ratio. Gasket selctionn procedure in on the shop manual.

Happy hunting!!!

Bye,

Dieseldude

**t2erns** · January 2nd, 2008 07:46 AM

thanks a lot sir dieseldude, friend's initial thought was the oil he told me he replaced it with besmoco (i saw the can too). he also clean the exh system. we're going to check the hose routing, we've got problem with those hoses (hence the title of the thread). he had checked the head, all ok no warpage no water leak no signs of contaminations/ but to be sure i will also pull the head if parts are availabe (friend did not replace the headbolts- i read they are torque-to-yield so i'm going to look for the bolts before inspecting the head again). project this week is to check the sensors if they're are all in working ranges. hopefully our members can suggest more, pls keep them flowing, the solution might be simple, i'm not a diesel expert but i'm trying my best to help solve this mystery (hope i won't loose my sanity, he he he) thanks again

**Dieseldude** · January 2nd, 2008 11:40 AM

I have the following questions:

Startability OK?
Does the engine have power?
Does white smoke occur on all speed ranges?
Does white smoke occur only when the engine is cold, or even when hot?

You could probably ask Isuzu on how much they will charge for a diagnostic scan. This would make things a lot easier for you.

Bye,

Dieseldude

**4JGtootsie** · January 2nd, 2008 08:23 PM

T2ern,
Try to pass by tomorrow to see your animal

Dieseldude,
Thank you for helping solve this isuzu problem. A lot of isuzu peeps will monitor this thread. Ang ganda ng sound ng 5 cylinder MB123 that you test drove this afternoon. We use to have a 300SD with a 126body a very elegant car. Does it have the same engine. The first turbo diesel that i ever drove quite fast at that time.