NP and NS diesel pump. Is there any difference

[Paleale]

Hi all, I hope someone can help me with the difference between an NP and a NS diesel pump. I'm looking at buying my 1st pajero under 12K. I do a lot of interstate driving for work and would hate to be a victim of pump failure. Not only that I won't have the money to pay 5k to fix the pump after purchasing the car. Any help or advice you can provide would be greatly appreciated.

Thanks.

[psproule]

Completely different. NP is a rotary injection pump with two stage mechanical injectors. NS is common rail. NP pump costs a bomb to replace and failures are not uncommon. NS is about 1/5th the cost but you rarely hear of a failure.

Pat

[Paleale]

Thanks for the reply

[aussieintas]

And as stated there are very very rarely any prodlems with the NS onwards.

[sharkcaver]

And as stated there are very very rarely any prodlems with the NS onwards.

Unless it's an NS auto with DPF.

Had a call a couple of nights back. A colleuge's son is in the market for a paj. He asked for my advice.

I told him to run. 6K for an NP pump replacement would be devastating to a young fella that could only just afford to buy an NP anyway. Then I told him about the NS auto dpf drama's. I told him he may need to up his budget to a > 2010 NT with no DPF (I still hear every now and then of dpf issues with the NT - people I rarely hear from always call me when they have paj issues or want advice )

I did say he could always take the risk, it may or may not happen, but it's something to take onboard before purchase. A hard choice for a young fella - an NP/NS with potential issues down the track or borrowing more money for a 2010+ NT that could still have issues. No easy answer I'm afraid.

[nj swb]

Unless it's an NS auto with DPF.

Point taken, but in the context of this thread, we're only talking about fuel pumps.

So far, touch wood, the common rail fuel pumps are neither as complicated, nor as expensive as the earlier DiD rotary injection pump.

[sharkcaver]

Point taken, but in the context of this thread, we're only talking about fuel pumps.

So far, touch wood, the common rail fuel pumps are neither as complicated, nor as expensive as the earlier DiD rotary injection pump.

Coming form one that has had an NP pump failure, I agree. Sorry Scott, added a bit more info to my post whilst you were posting. My main reason for the reply was the claim of no NS issues. Sure, not so much with fuel pumps, but that DPF has peeved a few people over the years, and as the OP is looking to buy an NP or NS, then he needs to be informed.

[nj swb]

Coming form one that has had an NP pump failure, I agree. Sorry Scott, added a bit more info to my post whilst you were posting. My main reason for the reply was the claim of no NS issues. Sure, not so much with fuel pumps, but that DPF has peeved a few people over the years, and as the OP is looking to buy an NP or NS, then he needs to be informed.

No worries. Yes, stepping from NP to NS could simply be swapping pump problem for DPF problem - unless your friend wants a manual?

Obviously, a DPF delete is a potential solution (emissions compliance aside), but there is some anecdotal evidence on this forum that not all DPF deletes are equivalent.

So yes, stretching to an NT does have some merit - says he with an NT with DPF who has had no trouble (yet ).

[psproule]

I dont think anyone was claiming no NS issues. Context of the OP was injection pumps.

[aussieintas]

Back to the OP.

Yes the NS dpf has caused some issues for some but by no means the majority. There are many NS owners on here that have never had problems but is something to consider and keep in mind. That said you say you drive interstate for work, so I'm guessing some good highway runs which will assist.

Overall the NS is good vehicle with only a couple of known problems like the intake manifold can get clogged up. Remove, clean out and possible egr delete or resistor mod sorts it out. Also check door edges as some have had rust issues but again not all.

There are some recalls, like all vehicles nowadays.

Airbags like just about all cars,
Timing chain tensioner
Indicator stalk
Control lever for gearbox
Incorrect bolts/nuts to driveshaft

Although this sounds like a lot of problems most recalls have been sorted by now. When I purchased my NS over 3 years ago it was only the airbags that hadn't been done. Easy to check by ringing a Mitsy dealer with the VIN.

For the money they are a great vehicle loaded with plenty of stuff. Yes they are older tech but the 4M41 motor is reliable. For your budget it would be hard to find another 4wd model with the features, reliability, comfort for highway kms along with the ability to have some fun off road.

Just my thoughts bud, good luck choosing.