Under powered TDi

[sp00k]

Right this one is doing my head in now as ive been reading posts and seeing if i can work this out but now im at a loss.Been having issues with it running like my old td maverick for a while now but now its no real better after doing alsorts to it.Ive got a miss fire at about 2000rpm out of it and now if left on kick over and blip the throttle it still misfires with what id say is white with a bit of blue smoke coming from it but noticed tonight that the exhaust fumes coming from it are blooming hot at well and smell nasty.Ive also noticed that there seem to be some oil in the rubber pipe from the pipe that runs from the turbo to the intercooler,but not sure if this is normalish.Now im at a loss to what it maybe now without sending it into a garage.Also when towing an going up hill the power is not the best and the temp gauge shoots up.So far ive replaced fuel lines front to rear inc proper clips,replaced the fuel filter housing and now removed it all together and replaced with an in-line filter(seen a post on here that someone did on it)glow plugs changed,new water pump(for over heating issue) replaced the maf as well and connected it to the laptop and getting no error codes at all.I dont seem to be loosing any oil either.Now im starting to think could it be an injector issue so any help on this would be massive as im about to just take a bloody big hammer to it now

 

[elty001]

Have you checked to see if you have got the mini filter in the banjo bolt:nenau
These can cause loss of power when clogged up.

 

[sp00k]

Have you checked to see if you have got the mini filter in the banjo bolt:nenau
These can cause loss of power when clogged up.

Sorry i missed that one.There is no banjo filter in there at all as i checked that one twice.....

 

[elty001]

Mine burns a bit of oil but power is always there.
Did oil pour out of the pipe to turbo or just a small amount?

 

[sp00k]

Mine burns a bit of oil but power is always there.
Did oil pour out of the pipe to turbo or just a small amount?

Just a small amount

 

[ian's terrano]

have you checked the maf mine slowed down on hills and was under powered changed the maf now pulls like a train and dose not slow down on hills :thumbs

 

[sp00k]

have you checked the maf mine slowed down on hills and was under powered changed the maf now pulls like a train and dose not slow down on hills :thumbs

Ive fitted a brand new one and no difference

 

[cncfabs]

Ive fitted a brand new one and no difference

Was it a geniune one.Even if it was theres no guarantee its good.Mrs peugeot had new one fitted at main dealer didnt cure the fault they had the car for a further 5 weeks before they discovered that the part they fitted was faulty:doh

 

[sp00k]

Was it a geniune one.Even if it was theres no guarantee its good.Mrs peugeot had new one fitted at main dealer didnt cure the fault they had the car for a further 5 weeks before they discovered that the part they fitted was faulty:doh

It was a geniune one that i fitted.Ive got one here somewhere i think so ill try that one and see how it goes,but does run like poo if i disconnect the wire off the maf its self...

 

[solarman216]

what pump have you got, different issues with different pumps, Rick

 

[sp00k]

what pump have you got, different issues with different pumps, Rick

Its a bosch system on it m8,have had a good look on the outside and cant see any leak from it but did read on here that seal are know to go on the inside of them so that was my next thought....

 

[Banshee]

Check your banjo bolt and pickup pipes in the tank

Banjo bolt can be check in situe, I did it via the download first time round which is a massive faff of removing the battery and power steering pump. All you need is a decent ratchet set with a few extension bars and a flexi head on it, it's a 19mm.

Remove it and check inside the bolt first making sure you note the order of the cylindrical cup and washers that will be sat there. There are 2 types of mini filter, people have been known to find them inside the actual bolt head that with a bit of fiddling can be removed.

Others have found a little sock like filter inside the recess where the bolt came out from, you'll find a spring and a filter together in there about 1-2 inches down.

If all is good in that respect then get in your boot, there's an inspection hatch with 4 bolts, THEY WILL SNAP!!!!! so be prepared to drill them out and fit new stainless ones

Once in there you'll see 6 more bolts holding a plastic circular collar onto the tank, this in turn secures the "sender unit" which has the pickup lines attached with swirl chamber and fuel gauge float.

Rather than me explain this one further you'd best take a look at my thread from when I had similar running issues, the last few pages are most relevant

http://www.nissan4x4ownersclub.com/forum/showthread.php?t=22418

 

[bud]

No1 injector, if it is faulty will create a missfire and also will not allow the ecu to bring the engine to full power.

 

[Banshee]

No1 injector, if it is faulty will create a missfire and also will not allow the ecu to bring the engine to full power.

Easier and cheaper to try my 2 fixes first before going down the potential expensive route of testing and replacing injectors, plus an injector should log a MIL code of 21 or 34 shouldn't it?

 

[sp00k]

Check your banjo bolt and pickup pipes in the tank

Banjo bolt can be check in situe, I did it via the download first time round which is a massive faff of removing the battery and power steering pump. All you need is a decent ratchet set with a few extension bars and a flexi head on it, it's a 19mm.

Remove it and check inside the bolt first making sure you note the order of the cylindrical cup and washers that will be sat there. There are 2 types of mini filter, people have been known to find them inside the actual bolt head that with a bit of fiddling can be removed.

Others have found a little sock like filter inside the recess where the bolt came out from, you'll find a spring and a filter together in there about 1-2 inches down.

If all is good in that respect then get in your boot, there's an inspection hatch with 4 bolts, THEY WILL SNAP!!!!! so be prepared to drill them out and fit new stainless ones

Once in there you'll see 6 more bolts holding a plastic circular collar onto the tank, this in turn secures the "sender unit" which has the pickup lines attached with swirl chamber and fuel gauge float.

Rather than me explain this one further you'd best take a look at my thread from when I had similar running issues, the last few pages are most relevant

http://www.nissan4x4ownersclub.com/forum/showthread.php?t=22418

I do remember reading that post and did the stuff you said in it which i found out that the bowl in the sender unit was blocked :thumbs ,but still didnt solve the problem.So today i started from scrach with it all and put back the primer pump on.What ive noticed now is that it will prime up but within 2min it goes soft again so now im let to think ive an air leak some where.Removed the sender unit from the tank again and when i block the pipes up and re-primered it now it will stay firm.The seal around the unit seems fine but have noticed that on the unit its self where it would seat on the rubber gasket looks uneven and a tad out of shape so now im thinking that maybe the problem.So does anyone agree with me on this or am i on the wrong path.....:nenau

 

[Banshee]

I do remember reading that post and did the stuff you said in it which i found out that the bowl in the sender unit was blocked :thumbs ,but still didnt solve the problem.So today i started from scrach with it all and put back the primer pump on.What ive noticed now is that it will prime up but within 2min it goes soft again so now im let to think ive an air leak some where.Removed the sender unit from the tank again and when i block the pipes up and re-primered it now it will stay firm.The seal around the unit seems fine but have noticed that on the unit its self where it would seat on the rubber gasket looks uneven and a tad out of shape so now im thinking that maybe the problem.So does anyone agree with me on this or am i on the wrong path.....:nenau

What I'd do buddy is do what I was advised to do by a few guys on here.

Run off a can of diesel straight to the injector pump return is a bitch to get to so don't bother with that just do the feed just being aware that the fuel that is sent back will be fed back into your main tank so make sure you don't overfill it!!!

If that works go backwards from there 1 step at a time until you reintroduce the problem, if you still have the problem from the off, it's either injectors, mini filter or a knackered injector pump

 

[solarman216]

I do remember reading that post and did the stuff you said in it which i found out that the bowl in the sender unit was blocked :thumbs ,but still didnt solve the problem.So today i started from scrach with it all and put back the primer pump on.What ive noticed now is that it will prime up but within 2min it goes soft again so now im let to think ive an air leak some where.Removed the sender unit from the tank again and when i block the pipes up and re-primered it now it will stay firm.The seal around the unit seems fine but have noticed that on the unit its self where it would seat on the rubber gasket looks uneven and a tad out of shape so now im thinking that maybe the problem.So does anyone agree with me on this or am i on the wrong path.....:nenau

if the O ring is bad on the pickup pipe into the pot then this will be cured with say half a tank of fuel as the leak point will be submerged, so if this only happens with low fuel level then yes get a new O ring, but if still happens with full tank it is not this, Rick

 

[sp00k]

Funny u saying that as at the moment the tank level is just below 1/4 of a tank so ill fill it up and see how it goes.One thing i forgot to say was yesterday i noticed that the exhaust fumes from the back smelt really rank but the heat from the exhaust tip was bloody hot.Ive had diesels before but never one where the heat of the exhaust fumes coming from the back being so hot before.

 

[AlexD333]

Funny u saying that as at the moment the tank level is just below 1/4 of a tank so ill fill it up and see how it goes.One thing i forgot to say was yesterday i noticed that the exhaust fumes from the back smelt really rank but the heat from the exhaust tip was bloody hot.Ive had diesels before but never one where the heat of the exhaust fumes coming from the back being so hot before.

It was damn hot yesterday though. :nenau

 

[bud]

Funny u saying that as at the moment the tank level is just below 1/4 of a tank so ill fill it up and see how it goes.One thing i forgot to say was yesterday i noticed that the exhaust fumes from the back smelt really rank but the heat from the exhaust tip was bloody hot.Ive had diesels before but never one where the heat of the exhaust fumes coming from the back being so hot before.

which leads me to believe it maybe the No1 injector with the ecu retarding the timing which will create excessive heat in the exhaust.