losing power

[IronVoid]

Hey guys, well I'm having issues with my 3L 03 patrol, when I drive around doing a lot of stopping/slowing down and taking off (freeway traffic) or if I need to get my power back quickly (slowing down for a give way but not quite stopping) I end up just blowing out a lot of black smoke and losing all power, and the only way to stop it is stopping the vehicle completely and sometimes even switching off the engine.
I read through some advice on here, and replaced my MAF and my air filter and gave my intercooler a good clean (noticed a lot of oil on the outside of it near at the bottom), anyway it worked great for a week and now it's back.

Any ideas?
I'm worried it could be injectors but hoping that it maybe the intercooler (oil on it suggests maybe).

I'm installing a boost gauge once the adapter arrives and I'm getting the NADS done on the 8th ($600 parts and labour good price?).

Cheers guys

[4bye4]

Refresh my memory - didn't you just have a new turbo fitted? NADS is a great idea but I doubt that it will change the problem you are having at the mom. When you replaced your MAF did you disconnect the battery for a few hours. I believe the engine management can retain memory and not "learn" the new MAF or any sensor that you replaced.

[IronVoid]

Yes the turbo just got replaced, and yes I disconnected the battery for at least an hour (think it was even overnight)

[4bye4]

Hay mate - I'm no expert, but it sounds like the turbo isn't kicking in to me. It will be interesting to see what your boost is when you fit your gauge. Oil leak from the I/C isn't a problem but air leak is. The oil just accumulates and comes out because of the crimped Nissan OEM I/C. Replace it with a fully welded one. You can get straight replacement from about $300 to $400 or upgraded bigger netter flow etc for as much as you want to spend. I got this one locally.
http://www.brownsradiators.com.au/sh...ory=Nissan_CAC

[IronVoid]

Looking at the receipts that came with it suggested codes for the MAF and the MAP. Could this possibly even be my MAP playing up.
Also diagnostics has shown nothing...

[IronVoid]

Going back to your air leak suggestion though, I'm not 100% sure but I think I can hear what sounds like an air leak but honestly I'm unsure simply because I haven't had a chance to drive this thing in 100% working order so not sure if some sounds are meant to be there. but at the same time surely if it was an air leak it would also be giving me problems in highway cruising wouldn't it?

[Hodge]

I don't think MAP influences performance or sends any performance altering data to the ECU on a ZD30.

[Hodge]

Going back to your air leak suggestion though, I'm not 100% sure but I think I can hear what sounds like an air leak but honestly I'm unsure simply because I haven't had a chance to drive this thing in 100% working order so not sure if some sounds are meant to be there. but at the same time surely if it was an air leak it would also be giving me problems in highway cruising wouldn't it?

Could this "air leak" be a vaccum leak maybe? If it is, then your actuator might not be sucked in enough for turbo to spool up properly.
Unsure if one could "hear" a vaccum leak under the hood, but anyhow, check your vaccum hoses etc...

[mudski]

Get the gauge and nads in and see what happens. I have a feeling it's more but we'll see. An egt gauge would be handy for this too.

[4bye4]

There are a lot of similarities here I think.
http://www.nissanpatrol.com.au/forum...8-Losing-boost