Cold starting problems for GU 4.2

Submitted: Friday, Dec 20, 2002 at 01:00
ThreadID: 2668 Views:1452 Replies:8 FollowUps:4
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I have a Nissan 4.2 TD and every time I take it to cold climates (I live on the Sunshine Coast) I have trouble when starting. It blows clouds of unburnt fuel and chugs and ph-arts around for some time.

I've had the problem siince new and Nissan do not seem to know what to do about it.
The preigniters have been tested, the compression is OK and the injector pump has been overhauled. It has had a stage 2 power up, with bigger compressor and the pump rerigged. Nothing seems to have worked thus far.

Does anybody have similar problems or, hopefully a cure for this embarrasing malady??
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Reply By: OziExplorer - Friday, Dec 20, 2002 at 01:00

Friday, Dec 20, 2002 at 01:00
What do you call 'cold climates'?

What tempreture range?
AnswerID: 10017

Follow Up By: Member -phoggi - Friday, Dec 20, 2002 at 01:00

Friday, Dec 20, 2002 at 01:00
By cold climates I mean anything below about 15ºc. It usually starts acting up at around 18ºc. When at 0ºc it really creates a storm of unburnt fuel.
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FollowupID: 5237

Follow Up By: Member -phoggi - Friday, Dec 20, 2002 at 01:00

Friday, Dec 20, 2002 at 01:00
By cold climates I mean anything below about 15ºc. It usually starts acting up at around 18ºc. When at 0ºc it really creates a storm of unburnt fuel.
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FollowupID: 5238

Reply By: Truckster - Friday, Dec 20, 2002 at 01:00

Friday, Dec 20, 2002 at 01:00
Havent heard of anythign on the Patrol list yet, but there are some peole from REAL cold countries like Poland etc on the list and havent heard of any mention yet...

Try there anyway, but if you can post your reply here too

Patrol List
AnswerID: 10018

Reply By: OziExplorer - Friday, Dec 20, 2002 at 01:00

Friday, Dec 20, 2002 at 01:00
What grade of oil are you using?

We had a similiar issue with a Nissan diesel engine many years ago, before we had switched every vehicle to synthetic. Once we changed the oil on Mobil's recomendation, we had no more problems.

At the same time, we had a Diahatsu Delta gearbox that would not cooperate till it got warm. The gearbox tolerances were small, and would not allow the syncro gears to speed up sufficiently. Mobil also advised the correct grade synthetic oil for that and end of problems.
AnswerID: 10019

Reply By: Brian - Friday, Dec 20, 2002 at 01:00

Friday, Dec 20, 2002 at 01:00
I have simular with the Jackaroo.
The oil is the first thing I would lo0ok at.
S econdly when it is COLD put a test light on the glow plugs
there might not be action there normaly but I think this should change in cold climate situation.
Contact me if you need further details
Brian
rimme@omninet.net.au
AnswerID: 10021

Reply By: Eric - Friday, Dec 20, 2002 at 01:00

Friday, Dec 20, 2002 at 01:00
Phoggi.
THis is clasic glow plug problem. Measure the current to you glow plugs. Then disconect them one at a time and note the change in current. The glow plugs may test ok but if the current is low your not going to start cleanly.The relay or the timer or the temp sensor or the droping resistor may be faulty.the glow plugs in older motors neaded about 8 amps each the later ones are about 5.for 10 second and then drop back to 3 depending on the water temperature. Most mechanics cannot fix this problem because they don't have the vehicle when it is cold. Eric.
AnswerID: 10023

Follow Up By: Bob Y. - Sunday, Dec 22, 2002 at 01:00

Sunday, Dec 22, 2002 at 01:00
Eric, Reckon your are right, it only takes one g/plug to give these symptoms, in cold conditions. These later models don't appear as prone to problem, as early models. MC & H N Y...
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FollowupID: 5278

Reply By: Member -Phoggi - Saturday, Dec 21, 2002 at 01:00

Saturday, Dec 21, 2002 at 01:00
Thanks for the info fellas, I will take it to Nissan in Nambour and let them have another go at it.

All the best for Xmas and the holidays,

Foggy
AnswerID: 10028

Reply By: forge - Sunday, Dec 22, 2002 at 01:00

Sunday, Dec 22, 2002 at 01:00
Ive got the same problem with my Nissen. I find if i turn ignition on to preignit , then when dash light goes out ,turn of & do that again 1 to 2 times more , it will start easley. Ive also had it all checked out & nothing found wrong . It seems its just a glitch in the system & ivd had to learn to put up with it .
AnswerID: 10073

Follow Up By: Truckster - Sunday, Dec 22, 2002 at 01:00

Sunday, Dec 22, 2002 at 01:00
That shouldnt be hard for a real mechanic to sort out I wouldnt have thought..

Id try somewhere else, you dont want it to NOT start at the wrong time and place, eg middle of nowhere..
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FollowupID: 5284

Reply By: forge - Monday, Dec 23, 2002 at 01:00

Monday, Dec 23, 2002 at 01:00
Been to the middle of now where & it hasent failed yet , but theres allways a first time , isant there .I was told that it was something in the elect,s the timer for the preigniters i think , & that it was quite an expensive part to replace ( problety way i havent dun it yet ) , iwas also told that it would not stop it starting , just it mite take a few revolutions more to start , witch seems to be the case.
AnswerID: 10117

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