2.8L Nissan needs help

[stuartd]

Here is the symptons. 3 weeks ago the pootrol started really well with no smoke and a smooth idol. It then started to smoke badly and run rough when cold.

Then it started to feel a little under powered. After talking with a few people I decided to book it into a reputable injector place. They looked at the patrol and ran a diagnostic check. 4 glow plug were gone. I instructed them to replace all 6 and give me back the two working ones from the old lot (only 8000km old and not happy). The injectors and pump were still well within factory spec apparently

1 hour after picking up the patrol it developed a rattle and the engine became noisier. The rattle turned out to be the intercooler which was still loose. The engine though is a major concern. All the fluid levels are OK. It is still blowing more smoke than it was prior to any of the problems.

Any ideas. I am thinking that i may have to go to Nissan:cry:

Any advice would be good

Stuart

[bop smoo]

mate sorry i cant help, my mate has had his 99 2.8 for a couple of months and has the same dramas he like you had the injectors done and still no better. i will watch this thread with intrest

[andyjim243]

Have you had the engine sensors tested? Sensors such as coolant temp,air temp/density,fuel pressure etc, are all things that can greatly affect a computer controlled diesel.Whilst not very familiar with these horrible little engines,one of these sensors could be sending the computer wrong signals or values so the computer just works with the info it has,which maybe, in this case, dumps excessive fuel into it.
Anyone else?............

Cheers Andy

[bop smoo]

Have you had the engine sensors tested? Sensors such as coolant temp,air temp/density,fuel pressure etc, are all things that can greatly affect a computer controlled diesel.Whilst not very familiar with these horrible little engines,one of these sensors could be sending the computer wrong signals or values so the computer just works with the info it has,which maybe, in this case, dumps excessive fuel into it.
Anyone else?............

Cheers Andy

thanks andy i have mentioned this to him, and he is going to have it looked at, i thought the telling factor with his truck was that compeared to mine his fuel consumption is shit house.

[harvey]

whenever the shogun's get really smokey they're advised to replace the fuel filters and air filters 'cause they're usually full of cr*p... just wondering whether or not similar could be contributing [even if its not the sole cause] to what you're experiencing...

[stuartd]

Thanks, Harvey and gang. I have just replaced the air cleaner, fuel filter and oil filter. Filled the old motor up with penrite and we have a noticable imp[rovement in both power and the black smoke. The rattle in the engine is a little quieter but still needs attention. I think I will get Nissan to check the injector nozzles and adjust the spray pattern.

Do you think this could be the problem???? Everything else seems OK

Stuart

[tuffnup79]

have you had the injector pump tested??

[deano180]

have you had the scan tool run over it,better to start with the cheaper options than jumping in to the costly ones that may not fix your problem.
needle lift sensor possibly(it is on no.1 injector).
get a dealer to put the 'nissan consult' tester on it to make sure it is code free first as even what seems to be an insignificant code can be fouling up the management system.
where abouts you located? someone might be able to point you to the best place to go

[stuartd]

I'm in brisbane (southside). I have spoken to Nissan about running the computer diagnostic test on it. They quoted me $105 per hour to do it and it could take anywhere from 1 to 5 hours. Just considering which arm or leg to amputate now

[deano180]

if you can find time to get to them apparently marooka nissan are good(came from some body high up the nissan food chain).
and to check for codes should take no longer than about 10 mins.further diagnosis could then take longer.
failing that go and talk to ted at diesel australia in allgas st (slacks creek).i have had a bit to do with him over the years and always found him good.
my sister has had no end of trouble with highway nissan so,i would steer clear of them.just my opinion though.

[stuartd]

if you can find time to get to them apparently marooka nissan are good(came from some body high up the nissan food chain).
and to check for codes should take no longer than about 10 mins.further diagnosis could then take longer.
failing that go and talk to ted at diesel australia in allgas st (slacks creek).i have had a bit to do with him over the years and always found him good.
my sister has had no end of trouble with highway nissan so,i would steer clear of them.just my opinion though.

Thanks Deano180, already talking with Diesel Aust. They had another look today and agreed that something was not right. They have it booked in next tuesday for another crack at it. It all started with them but they have been nothing but helpful and honest. :D

I will call Moorooka nissan tomorrow and see what they can do. I have to agree with you about highway nissan and you can now throw in wynnum nissan as well.These guy's used to be very helpful but lately they have been anything but.:mad:

[NissanNutter]

sounds like bad fuel to me or fuel filters need replacing.

[stuartd]

sounds like bad fuel to me or fuel filters need replacing.

Hello NissanNutter, I get my fuel from the same place all the time (unless travelling) and none of my other work vehicles (8 KW trucks) have had a problem with dirty fuel. I have changed the filter just to be sure.

Someone suggested today that it could be the spigot bearing:confused: Any thoughts???

The rattle can only be heard when accelerating or coasting. As soon as you back off there is no noise. I know its hard trying to diagnose without hearing / seeing it but any help would be good. :o

Stuart

[KRUZIN]

what colour smoke mate???

white = low compression/ fuel blockage etc

black = over fueling/air restrictions etc.

blue = oil getting in somewhere.

spigot brg only runs when foot on clutch, same with release brg.

does it rattle in any gear? free reving in neutral?

how long since valve clearances set?

you may be hearing the vavles rattling until the motor warms up & the clearances tighten up a bit.


i had a work rodeo that did that, while driving along you could hear the valve gear go quiet as the motor warmed up.

[stuartd]

It has been a while but I think we may have found the problem. The vacum pump is not operating as it should. It is operating at 5 bar and should be at 20 bar.

The vacum pump helps control some of the sensors for the fuel. Nissan tested for faulty engine codes and couldn't find anything- this would explain that. It would also explain why my brakes have now got some serious fade.

The team at On Track 4WD centre discovered the pump problem. Special mention to Ted and Dan at Diesel Australia. These guy's are fantastic and I would happily recomend.

The pump problem should be soughted by Mon / Tues. I will let you know

[bop smoo]

how did you go....... mine has had the exact same issues .. except i took it to a injection shop on the northside and was told nothing was wrong, the very next day a was coming around a roundabout and the thing just dumped a massive amount of black smoke and just died(huge power loss) i stopped and shut it down got out and checked everything. got back in and tried to start it, this took about 15 seconds when it did start it was like it was running on 4 cylinders and blowing shit loads of smoke, i limped it off the main drag and thats when it started with the ratterly noise. i shut it down again and walked home........i rang the dudes that looked at it yesterday and they said fuel pump OR injectors OR turbo not happy JAN.some mobile dyanostic dude is coming over in the morning to try and throw his gear on it and read the codes................

[Peter @ Aawen4x4]

That sounds pretty terminal bop smoo! Does it seem to run better at higher revs? Or have you been told to leave it alone until they look at it?

[bop smoo]

i want to start by giving a bloody good mechanic by the name of daniel ayre a plug. this guy came out on saturday, listened to the car for two seconds and picked it straight up.it was the idler pulley bearings on the timing belt. pulled of the top cover and sure enough the bearing had destroyed itself.he jumped in his van and picked up a kit ( belt bearings and pulleys). and had it running in no time.IT MUST HAVE BEEN MY LUCKIEST DAY EVER, when it shat the bearings it must have retarded the timing, and some how didnt bent any valves.i still have the hard starting issues. he put the dynonostic thingy on it and no faults found.SOOOOOO i guess it is the pump. now i have the option to shim the pump or replace it.daniel is going to talk to the guys at km diesel at brendale on monday so i will try and get it there mid week and go from there, i guess.

[stuartd]

Hello Bop Smoo. No I haven't fixed the problem entirely. Here is what I have done

Changed oil twice (now using castrol)
Changed all filters (twice)
Replaced vac. pump (On Track 4WD Centre - Very happy with service)
6 new glow plugs - 4 were gone (Deisel Australia)
Injectors cleaned up (Deisel Australia - Dan is fantastic)
Turbo tested (Deisel Australia & Moorooka Nissan)
Injector pump tested (Diesel Australia & Moorooka Nissan)
Full diagnostic check (Moorooka Nissan)

We have reduced the black smoke but it is still noticable. I will persist as prior to this starting the motor did not blow any smoke at all - nothing - nada - not even with the first start on a cold morning. Everyone who has looked at it agrees that the smoke is more than normal but can't find anything wrong with it. If anything they comment that it runs really well for a 2.8!

I have read elsewhere that people have had the same problem and have blocked the EGT. This seams to have fixed the problem for them and they also comment that it improves the power. Some add that they reduced the boost on the turbo to help preserve the engine??????

While it was in at On Track I also had all the bushes replaced and a 2" lift installed. Dual battery system is sitting there waiting for me. If the EGT thing doesn't work I will get Deisel Australia to rebuild the injector pump.

It's good to see the 4wd gods were watching over you. That could have been a complete disaster. Is this mechanic your regular guy or did you get lucky again. Sounds like he knows his way around the 2.8. Please throw a number up as I would like to talk to him about my problems


Stuartd

[bop smoo]

yeah ... lucky again..... he is not my regular guy.. the guy who knows the car insisted the shut off valve on the back of the pump was gone...................not even close. while the new guy is great he gets k+m diesel at brendale to do his injection work, so after he nutted out the timing belt/bearing issues i took it to k+m , they have had it for 3 days and havent found much to back up the starting issues.( everyone else wanted to just throw a new pump at it).as for blocking the egr valve , i have done that to mine. i tiny tiny tiny bit more power as for smoke mine has never been bad anyway. oh oh oh k+m are going to replace the air flow sensor ( some nobber ran an oiled k+n filter in it for about 2 weeks). i hope that this is the problem.

[stuartd]

yeah ... lucky again..... he is not my regular guy.. the guy who knows the car insisted the shut off valve on the back of the pump was gone...................not even close. while the new guy is great he gets k+m diesel at brendale to do his injection work, so after he nutted out the timing belt/bearing issues i took it to k+m , they have had it for 3 days and havent found much to back up the starting issues.( everyone else wanted to just throw a new pump at it).as for blocking the egr valve , i have done that to mine. i tiny tiny tiny bit more power as for smoke mine has never been bad anyway. oh oh oh k+m are going to replace the air flow sensor ( some nobber ran an oiled k+n filter in it for about 2 weeks). i hope that this is the problem.


The amount of research I have done on these motors leads me to beleive that they are very tempramentle (spelling) but still reliable. I can't recommend Diesel Australia enough:thumb: . These guy's have been fantastic. If you are not happy with your current arrangement give them a go.

I have just about given up trying to find the problem. I have been told that it is an exceptable engineering standard to push something until it breaks. In this case I will drive it until it stops:truck:

[bop smoo]

i went out there on friday with a near new air flow senser in my hot little hand, after trying this is fault was still there, so the mechanic said the next thing is to pull the glow plugs out.... off came the intercooler and all the other bits and then on the first glow plug ......... snap...... he snapped it of flush with the head... no some mobile thread extractor dude has to come out next week and try to save the head, i guess i'm up for glow plugs now wether i needed them or not.

[tuffnup79]

question: is your hard to start problem worse when it is hot or always the same?

[bop smoo]

it seemed to be when it was hot, but now it does it when it is cold, i don't think it is the pump because when it does fire up it dumps a heap of smoke, like it has been getting diesel but just not starting. if you glow it 3 times it will start every time hot or cold

[Huggy-GV]

your hard to start problem could be something todo with the fuel pump(mates car did it took it a Diesel mech. in newcastle and he replaced a part within 30mins and fixed it)

[stuartd]

it seemed to be when it was hot, but now it does it when it is cold, i don't think it is the pump because when it does fire up it dumps a heap of smoke, like it has been getting diesel but just not starting. if you glow it 3 times it will start every time hot or cold


Hey Bop Smoo.
In my never ending quest to get to the bottom of the problem I have stumbled upon this little bit of information. It is only a $50.00 fix so i will give it a go and see if that works. It could be the same for you.

Here is the link:thumb:
1998 Patrol 2.8TD6 GRSE Uk 120,000mls - Patrol 4x4 - Nissan Patrol Forum (http://www.patrol4x4.com/forum/showthread.php?t=9712&highlight=2.8)


stuartd

[bop smoo]

thanks man.... read my warning thread in general diss heading WARNING WARNING