2003 3lt Nissan Engine compression problem.

hopefully you have a big limit on the amount of any single claim on the extended warranty... sounds like common 3.0L TD issues.

Not enough info.
Are valves OK?
Are the rings worn?
How much variation from cylinder to cylinder?
Does it use oil above normal amounts?
Does it operate in dusty conditions?

Just saying low compression is not much help, so the answers to the above would be a great help in trying to diagnose a cause.

I once had an engine that used lots of oil right from new and soon had low compression pretty much over all the cylinders and it turned out to be the piston rings were installed upside down.

Don't get caught up in the 3.0ltr Nissan hype, it could be anything yet. Have to wait and see re the above questions

Regards
Mike

Sounds like the standard nissan 3 litre issues - I would be getting it fixed under your warranty and then selling.

Good luck with it.

Garry

Are Nissan saying that the cracked conrod bearing is responsible for the low compression ??? LOL!
I'd be talking to the RAA tech support or some other expert external to Nissan to see what they say. I'd certainly be concerned.

Don't hang too much on the Nissan Extended Warranty. I am still waiting and phoning and waiting......... My GU diff had done less then 100,000kms, serviced regularly by the Nissan dealer, even just before we went away. Everyone says they are burstproof but no!

I do not know of one 4b owner who is going to thrash his $50 grand, plus, vehicle.

Is there any figures on what percentage stuff up, and come to think of it what about Toyotas too.

And you guys wonder why I am lookng at an outdated 4.2 TD Nissan Patrol, or a Landcruiser, even with 200,000 on the clock, as longivity is the key to happy relaxed motoring.

I hate reading about all these 3.0 TD problems, caused by a little motor doing a mammoth job, and going bang. Unfortunately that is the case, they are wound up to the hilt, so something is gunna go bang.

Nissan should look at this, and work on thier 4.2, if they want to keep selling these vehicles in Oz. Too many are giving problems.
Toyotas seem to have the edge, at the momemt

Cheers
Bucky

I don't think 3lt is too small an engine.....in the old pallance that's about 184 cubic inches...the patrol is <3 tonnes and if driven like a truck and not a V8 supercar using max throttle in each gear a 3ltr engine should be sufficient to do the job. I think a lot of the problems can be attributed to people driving these high tech diesels as if they are petrol engines......from my viewpoint (aka IMHO) diesels must be driven differently and this includes building revs slowly, not tromping on the go pedal and watching that exhaust gas temperature......I think all manufacturers would do themselves a favour if they fitted EGT gauges to new vehicles and advised people to drive of this instead of RPM.
My thoughts only.....now waiting for the incoming missiles.

A followup to my post. I collected my patrol from the Nissan dealer last night. The engine was rebuilt with my crank, conrods and head retained, but a new bock, pistons, rings bearings etc. and all covered by my extended warranty. The dealer advised me that I would have been out of pocket around $10K had I not had the extended warranty - I think the best $800 I have ever spent. They're not sure what caused the wear, but think the bearing always had the crack. I had a new clutch plate fitted at my cost, it was only about 50% worn but I thought cheaper to do now with the engine out. They have given me a further 20,000/12month warranty. Not happy about the whole thing occurring, the car was well looked after and as I stated the oil changed every 5,000km. I don't know if I just got a bad one or there are problems like a few are suggesting. No complaints about our local Nissan dealer, they kept in touch and let me know what was going on and when the car would be ready, which it was. I intended to keep the car for a while and perhaps upgrade. It has (had) been an excellent vehicle and was running fine even when the problem was discovered, but I have lost my confidence in them now and am not prepared to risk spending another $50,000+ on vehicle that may have problems at 135,000km again. I may re-assess in another 6 to 7 years and see how they are going but NOT at the moment!