1999 2.8 gu with whie smoke and starting problems

[kgibbo]

Hello all i have a 1998 gu 2.8 td intercooled patrol
Last week it dropped power then started to run realy rough and blow lots of white smoke.
I have replaced the glow plugs and serviced the injectors
but still the same
its extreamly hard to start and runs rough with lots of white smoke even after its up to running temp??
I also am trying to get a manual on this but they say i cant downlaod till i get 25 posts but i dont want to fill the forum up with crap can any one help with this also please

[nissannewby]

White smoke tends to be a sign of unburnt atomised fuel. If everthing else in check you may have some more serious dramas do you know if the head has ever been off?

[kgibbo]

AS far as i know the head has not been off ive had the car 2 years
The engine has 250,000 kms on it

[nissannewby]

Do a compression test on it and see what she is at. It does sound like an internal issue and a compression check should point you in the right direction. Also has the fuel pump had any work that you know of?

[kgibbo]

the fuel pump is also untouched
i am buying a compression tester in the morning do you know what comression i should get?
And for the pump is there any tests i can do to see if its ok or not?

[nissannewby]

440psi new prob wouldnt want them to much lower than 380 or so and no more than 70psi difference across all 6 cylinders. Make sure the compression tester has an adaptor for your glow plugs and disconnect your fuel cutoff solenoid. Not much you can with your pump othe than check timing. It may also be your advance plate have heard of other 2.8 owners having trouble with this hopefully someone will be able to comment on this.

[XTC]

There are a couple of sensors which could also be causing problems. Crank position sensor, or I have heard of another sensor on one of the injectors (No. 1 I think). My Patrol has played up like you describe after water crossings, and I've always put it down to a wet sensor. Mine doesn't last long, and clears itself fairly quickly.

Mate I have an electronic service manual if you need a copy please PM me your e-mail address and I'll try and send it through.

[kgibbo]

fuel solenoid im guessing thats one of the plugs on the pump as i dont think it has anything before this?

[nissannewby]

Yeah not sure on the 2.8's but are normally on the backside of the injector pump and willl have a plug. Disconnect and crank motor with compression tester fitted (easier with 2 people)

[kgibbo]

thanks i have sent my email through and will continue trying to fix this

[kgibbo]

ok manny thanks i will do the compression test tomorrow and hope its not that as a new head mm cant imagine how much that will be or even if its worth spending tat amount on it mmm
It does have lift and front locker rock sliders winch ect but most of this can go on a new rig also

[Thirsty]

Similar thing happened to TONKA'S Truck, His problem was the turbo. PM him and he will fill you in.

Cheers
Troy

[kgibbo]

hello again i have just done the compression test all 6 cylinders came up at 420psi??
so doesnt look like a head prob? where to check next?? please help could it be the fuel pump?

[kgibbo]

hey thirsty tryed looking for tonka in the member list there are 4 ppl with this ady

[nissannewby]

Could be the fuel pump there is an advance plate on the side which is cheap to replace (could be this) I think "the ferret" sells these. Sounds like your engine is in good nic. Try the advance plate and check your pump timing. To check the turbo pull both intake and exhaust off the turbo check there isnt excessive play in turbo shaft or any oil on the exhaust side of the turbo. If the turbo has failed you would get blue smoke as well and wouldnt effect it to much at start up as the turbo isnt doing anything at idle. Also when your driving there would be a lot of black smoke as well. Check your pump timing and replace advance plate see how you go.

[kgibbo]

ok do you have a number or email for the ferret at all as to get a advance plate and does he also reco the pumps?

[nissannewby]

Check the vendors thread he is there. I dont think he does pumps but wouldnt hurt to ask. Also it wouldnt hurt to check your engine timing make sure everything lines up with the marks when your engine is on TDC

[kgibbo]

yer engine timing is good as had done the belt and water pump 4 months ago but ill take the cover off again

[kgibbo]

just treyed looking for vendors? no luck there

[Sir Roofy]

ok do you have a number or email for the ferret at all as to get a advance plate and does he also reco the pumps?


just pm him mate he,s on here

[kgibbo]

thanks just messaged him ill wait for his reply cheers

[ghostrider_oz]

I recently had to replace the timing belt in my 2.8 found that the fuel pump had been moved all the way one way (retarded or advanced) - the guy that work on my bus found that he could move the pump a bit like a distributor. Better to get some advise from a diesel mechanic about this or somebody else on here may know more

[kgibbo]

yes thanks all for your info i have found the fuel pump to be 1 tooth out of timing ??
Dont know how this would have moved though as its been months since it was replaced it does have signs of rubbing on something tough as there is a continous rub line on the flat side of the belt??
about where the cover meets the engine perhaps this was not installed correctly?

[nissannewby]

good find. Was the tensioner replaced when the timing belt was?

[ghostrider_oz]

good find. Was the tensioner replaced when the timing belt was?

You would have to hope it was - it's usually part of the kit

[kgibbo]

yes the tensioner and idler was replaced i saw the old units and was very close to destruction.
but still unsore how the pump could jump the belt?
Was running rough on start up due to 2 glow plugs being down but should not have been bad enough to cause it to jump has this happened to anyone else?

[Buschmaster]

I wont conclude it was the 2 glowplugs that let the belt jump but the possebility seems logic to me ?

[97_gq_lwb]

Check the harmonic balancer isn't loose quite common for them to undo it when doing the timing belt and not loctite it and it works it's way loose chews out the keyway and you would get a belt jumping teeth and then valves hitting pistons and a dead engine.

[Brisvegas]

MAybe Belt wasnt tightened enough, they do stretch a little so might have been enough once worn in to skip tooth
coupled with running rough problem with glow plugs might have pushed it over the tooth perhaps.