All,

At 15000 miles I took it in becasue I was hearing a diesel sound at startup. They said it was carbon buildup, and ccleaned it out. It sounded better, but not fixed.

At 30000 miles I took it in for the same issue. they said it was the same issue, but did not clean it - not covered under warrenty. They said add gas treatment to remove buildup.

At 35000 miles, I have error code P04340. Catalist system malfuction??? WHat the??? Someone with a code reader said it might be oil by the valves or rings??? I don't believe everything I hear, but it makes sence if there's buildup.

What is P0430 trying to tell me?

OK... After reading it again, I know what it's trying to tell me. The second cat is not doing it's job, or the O2 sensor is going out.

At this time, given it's history of carbon issues, I'd say the cat is clogged. But where'd the carbon come from? I'd say it's possible it came from valve guides. It's a streatch to say it's the rings, but I guess it could be.

Short version, it's burning oil. It could be oil from the EGR system, or valves, or maybe even rings.

What I don't know is if fuel injector cleaner could do it.

I'd love to help, but I'm just coming up on 13k miles with no problems yet.
Well, week 1 was the mystery stall issue when tilted at an angle, but that never came back.
Please keep us informed.

same here. I have a little over 11K miles.

Fred,

What's your warranty on the DI Rodeo?

Warenty is 3 years and 50,000 miles. I'm coming up on 2.5 years, with 35,000 miles.

I talked with Isuzu 'customer care' (Allise), and they gave me case#: 07178002. She said, what do you want Isuzu to do. I said, replace the engine, as this is the reported case anyone knows of. The dealer has to agree with the recommendation.

I called the dealer, and reminded them of it's history. He said Oregon has bad gas, and causes carbon. I said but I'm doing everything you recommend, Chevron gas, and injector cleaner every other tank. It's still there, and making other issues, too This engine does not have a carbon 'problem', it has a cronic carbon buildup issue. I'm outraged that the fix for this appears to be cleaning passages (either myself or a dealer), every 5000 miles.

We talked about the ERG circuit, and the PCV circuit, both of which could let oil into the chamber and cause carbon. Then I mentioned it was 'sipping oil'. The service manager agreed that oil by the guides could cause carbon, and the issue with the cat. I said how do you rule out leaking guides? He said, compression test, and leak down. I said, that only tests teh pressure in the chamber, when the valves are closed. You can not test guides with any pressure test, as they are on the other side of the chamber. Ummmmmm, we do what Isuzu tells us to do, was the responce.

Then I said, I've had this vehicle in 3 times in 35000 miles, for the same issue. I would not have bought it, had I known it was an issue, and it's not in the mantinance schedule. Further, it costs me $120 in (cheap) rental car fees evey time I bring it in. I asked if I need to buy a beater car to drive while my NEW car was in the shop all the time... He said they'll get us a car. I said thanks, very much.

In short, I really don't have a problem with the dealer. I believe they are the middle man in this. THey appear resaonable and forthcoming. In fact, of all the places I've bought cars, I'd buy from them again. I'm afraid my 3 years are going to laps, and I'll be stuck digging out carbon at evey oil change. This does not excite me at all.

Knowing it was a new engine, and the last rodeo (spare parts issues), I bought the super-extended bumper to bumper. Of course buying it doesn't mean I'll get it, and I need to start cranking miles if I want my money's worth.

Keep us posted. Holger and I are going on a road trip to catch up with you. <img src="/forums/images/graemlins/oink.gif" alt="" />

As I mentioned before, my brother in law had a cam snap on his 2004 DI Rodeo around 50k miles. Dealer at that time told him it was the second he has seen in a month with one of the drivers side cams snapped in two. Both cars at 50k+ miles. Since the dealer had already dealt with one, Isuzu warrantied and gave him a new long block, he was back on the road in less than a week.

Hummmmmm

Snapping a cam is not a good thought.

UPDATE:
They fired it up yesterday morning and reported no odd sounds. "WHAT???!??!??!?" I said. It's been makeing that noise since shortly after we brought it home, now it's gone? I guess the $40. in fuel additive (sea foam, Chevron injector cleaner, ect) was cleaning it out. How frustrating.

The engine light wasn't on either. They only way they new something was wrong was by reading the code history.

The cruise control will quit working when the ECU sees too many cilinder mis-fires.

The only good thing is that I'm working with the same people that saw the issues at 15k, and 30k. They know it's history.

It's not over yet <img src="/forums/images/graemlins/confused.gif" alt="" /> <img src="/forums/images/graemlins/confused.gif" alt="" /> <img src="/forums/images/graemlins/rolleyes.gif" alt="" /> <img src="/forums/images/graemlins/confused.gif" alt="" />

I THINK cylinder misfire left engine bank was the code he started getting before the cam snapped.