GU Patrol help

Submitted: Friday, Jan 16, 2015 at 21:52
ThreadID: 110761 Views:1572 Replies:8 FollowUps:2
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Hi all you Patrol gurus.

I have a GU2 4.8 petrol auto, 190,000km.
Vehicle has stalled whilst driving a number of times on road at 60 odd k/hr and on the freeway at 100k/hr.
Power just dies with no warning lights appearing on the dash.
Attempt to start the engine and the revs rise to 1000 or so then engine stops again.
After a few attempts engine catches and then runs ok for hours and 100s of ks.

This has happened a couple of times now.

There has also become noticeable a slight smell of burnt oil on a hot surface from the engine bay but it is not a burnt electrical wiring smell. There is no evidence under the car of any oil leak.

Any thoughts before I take it to Nissan or is there a Nissan specialist in Melbourne that I could take it to.

Been a great vehicle up to now but I do not want to be left stranded in the bush.

All ideas would be appreciated.
Happy 4 wheeling

Woodsy

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Reply By: Idler Chris - Vic - Friday, Jan 16, 2015 at 22:13

Friday, Jan 16, 2015 at 22:13
Diesels do the same thing but it is a blocked filter located in the injector pump. I would be checking the fuel flow especially in line filters.
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Reply By: Erad - Friday, Jan 16, 2015 at 22:35

Friday, Jan 16, 2015 at 22:35
Not sure where the fuel filter is located, but my bet is that the filter(s) is blocked. Many moons ago, I was approached by a bloke who had a VW fastback which had the same symptoms. It would go for 20 km, then stop dead. Wait a minute and away it would go again for another 20 km. I guessed fuel filter and we went for a drive in - 5 Deg C temps with me holding a pressure gauge out the passenger window, and petrol dripping all over my hand. Sure enough, after about 15 km, the gauge started to drop and at 20 km the engine stopped. Wait a few minutes, start up and drive home and it did it again.

His problem was the fuel filter. He had been visiting his grandkids and had parked next to their sand pit. There was this nice little door and a cap under it, whuch they unscrewed and shovelled an unnown amount of sand into it. He had to have his fuel tank removed and cleaned out, and a new filter. All OK after that.

The hot smell would be the engine running too lean, and the exhaust manifold probably glowing red hot. I would replace your fuel filter and hopefully fix the problem.
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Follow Up By: Erad - Friday, Jan 16, 2015 at 22:40

Friday, Jan 16, 2015 at 22:40
PS I don't know the Nissan filter arrangement, but I would expect that the blocked filter would be rather large - maybe 150 mm long x 90 mm square cross section. If it is not the filter, you could have some crap in the fuel tank which gets drawn over the fuel pick-up point and blocks it. Car stops, crap floats away, car starts OK, crap comes back... you get the point of this. Try replacing the filter first.
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Follow Up By: Robin Miller - Saturday, Jan 17, 2015 at 16:18

Saturday, Jan 17, 2015 at 16:18
Filter is easy to get at in these cars more or less under floor pan where driver sits , fairly standard device to , suggest a couple of g-clamps to squish hose and stop fuel spurt when getting off.

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Reply By: Bigfish - Saturday, Jan 17, 2015 at 08:36

Saturday, Jan 17, 2015 at 08:36
On my troopy there was a crossover switch from 1 tank to the other. This had a piece of paint from a jerry can blocking it so it was starving. Start at the tank, follow the lines and replace every filter AFTER you have drained some fuel from the tank into say an ice cream container to check the fuel for contaminates.

good luck.
AnswerID: 544404

Reply By: Member - Cuppa - Saturday, Jan 17, 2015 at 09:01

Saturday, Jan 17, 2015 at 09:01
Just another thought....... along the same lines (fuel flow issues).

If you stall again, as quick as you can get out of the car & remove the fuel filler cap. If there is a noticeable vacuum as you remove it you may have a blocked or partially blocked tank breather. If enough vacuum builds up it will stop the fuel flow.
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Reply By: Axle - Saturday, Jan 17, 2015 at 14:31

Saturday, Jan 17, 2015 at 14:31
G/Day Woodsy, I Would check the fuel pump, take the feed line off the filter and depending whether its electric or mechanical turn on ,or crank over and see what fuel comes out the line, but would only do this when it plays up!, other than that, what others are saying.


Cheers Axle.
AnswerID: 544419

Reply By: Robin Miller - Saturday, Jan 17, 2015 at 16:25

Saturday, Jan 17, 2015 at 16:25
Yeah fuel filter first as per others replies Woodsy, then listen to see that fuel pump is running.

Your engine fires so its unlikely to be the other main isue of intermittant crank angle sensor but its worth tugging the wires out of it when its running.

I could check and see if it has thrown any error codes if you like ?
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Reply By: Life Member - Terry 80FTE - Saturday, Jan 17, 2015 at 22:31

Saturday, Jan 17, 2015 at 22:31
If you do need to take it to a mechanic, after a download on it, get him to do a combined fuel pressure and flow test,
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Reply By: Member - Woodsy - Tuesday, Jan 20, 2015 at 10:03

Tuesday, Jan 20, 2015 at 10:03
Thank you all for your interest and replies

I removed the in-line fuel filter but problem still exists (and possibly getting worse)

I am tending towards a possible fuel pump problem

It is in for 190,000 service at Blackburn Nissan on Thursday so hope they can diagnose the fault.

Would still be interested of the name(s) of a good Nissan mechanic, Eastern suburbs.
Happy 4 wheeling

Woodsy

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