3.0lt GU Patrols - Grenade Facts

[Big Nog]

should be 155000 kms..

[jash]

my 05 3ltr has done over 250k has chip big exhaust bigger intercooler is good on fuel and pulls like better than any 4.2 ive been in. Like the 4.2 had to get 3ltr due to cost but i recon its done me proud!

[Rumcajs]

my 05 3ltr has done over 250k has chip big exhaust bigger intercooler is good on fuel and pulls like better than any 4.2 ive been in. Like the 4.2 had to get 3ltr due to cost but i recon its done me proud!

One can only hope..... fingers crossed.

[cairnsGU]

My 3ltr is an 2001 and just went bang.....203000km's

[jimmyz]

I have a 2003 3.0l with chip and exhaust upgrade. Pulls my 2 tone ski boat like a steam train. 131,000km on the clock. Best 4x4 i have ever had.

[Nissoj]

Hi Wnicko, I am also a defender freack... they are great cars. IO use them when I have to go to very bad mountain roads. They are not very comfortable but they are very good tools. I also have a coiuple of Patrols. I take them to the deserts and long distance trips... By the way I am a mountain guide based in Bolivia and owner of Andean Summits, an adventure operator. I am surprised and sad to know that Land Rover is not building the double cabs anymore!

[Nissoj]

You scare me Rumcajs! I have just bought my first zd30 patrol. It is my first diesel patrol and I did not know about the problems. I do not think mine has the mods... I doubt I will find someone over here who knows what to do... Does anyone knows of a document or a link on how to do it oneself?

[Bob]

You scare me Rumcajs! I have just bought my first zd30 patrol. It is my first diesel patrol and I did not know about the problems. I do not think mine has the mods... I doubt I will find someone over here who knows what to do... Does anyone knows of a document or a link on how to do it oneself?

Try this Mate

http://www.nissanpatrol.com.au/forum...ghlight=gren02

[Coogs]

Thanks to YNOT for the detailed response on why people call some 3lt diesel motors "Grenades".

There are heaps of threads on other forums on the subject (sounds like you found some of them), but the early ZD30 engines fitted to GU series 2 had reliabillity issues and developed a reputation as a grenade that could go off with out warning at any time. Series 3 onwards are more reliable, but it still pays to take a few precautions to make sure they stay reliable.

Most engine failures seemed to be caused by fouling of the Mass Air Flow (MAF) sensor with crank case ventilation vapours, causing the sensor to send incorrect air flow data to the engine computer. This results usually in over fueling, raising Exhaust Gas Temperatures (EGT's) to dangerous levels, which melts pistons and damages other engine components. Air flow into the cylinders can also be reduced (by Exhaust Gas Recirculation (EGR) carbon combining with the PCV oil vapours building up in the inlet manifold. Reducing air flow to the cylinders makes the over fueling situation worse.

There is a series of modifications (engine saver mods) that can be done to eliminate the causes of these faults.
As Nisspat said, it's usually the 4.2 owners that call them grenades.

Tony

I'm about to fit a Pyrometer to my 3LTD (CRD) as a precautionary measure. Can you please advise what temp. I should look for before things go wrong!

[macca86]

I'm about to fit a Pyrometer to my 3LTD (CRD) as a precautionary measure. Can you please advise what temp. I should look for before things go wrong!

550 degrees post turbo is normally getting too hot for a di the crd run a little hotter I believe