wot do you think ?

[eboy]

hi all, have a small problem with me truck,when reving in neutral at about 2000 rpm you get a small misfire and puff of blue smoke, and if you keep revs up at 2000 and rev from there it does the same, on tick over no misfire dont even notice a misfire when driving, but do notice at night in headlights behind when accelerating crap out the exhaust,done a code flash test came up with code 55 no fault found, got new k&n filter cleaned maf sensor but still no different, drives no different no lack of power so im at a bit of a loss, so as the title says wot do you think ? thanks in advance eboy. sorry its a bit long winded:

 

[zippy]

mine does this when cold and occasionally when changing down a gear to overtake. It happens more in the cold.

I have just put it down to the older type engine of the T2 and have not worried about it.

If you are wanting to reduce the amount smoke coming out the back, then fire in some regular redex or use biodiesel.

Regards
Lee

 

[Timbo_1975]

This is quite normal on the TDi's when revving in neutral. Don't worry about it.

 

[guncharmer]

there is nothing normal about it, if i take my revs up slowly from tickover there is no misfire and no smoke,if i rev it quickly there is. unfortunately the mot test procedure is to quickly rev the motor and the ensuing cloud of smoke(mostly unburnt fuel ) can mean you wont pass the emissions unless you have a friendly tester and explain . i messed about adjusting the actuater rod to the turbo wastegate and got some improvement suggesting there is a connection. i dont recommend this though, i did it cos i was fed up but didnt really know what i was up to and might easily have messed something up.sometimes driving i can get a misfire,1st or 2nd gear highlights it and i am intending to mess with the rod again as i got rid of it before.l started messing(as i call it) as i get so frustrated with comments on here from guessers who dont know what the bloody hell they are on about. if toolbox cant help then there is not much hope of a forum fix.

 

[Liam]

there is nothing normal about it, if i take my revs up slowly from tickover there is no misfire and no smoke,if i rev it quickly there is. unfortunately the mot test procedure is to quickly rev the motor and the ensuing cloud of smoke(mostly unburnt fuel ) can mean you wont pass the emissions unless you have a friendly tester and explain . i messed about adjusting the actuater rod to the turbo wastegate and got some improvement suggesting there is a connection. i dont recommend this though, i did it cos i was fed up but didnt really know what i was up to and might easily have messed something up.sometimes driving i can get a misfire,1st or 2nd gear highlights it and i am intending to mess with the rod again as i got rid of it before.l started messing(as i call it) as i get so frustrated with comments on here from guessers who dont know what the bloody hell they are on about. if toolbox cant help then there is not much hope of a forum fix.

I suppose if the guessers comments on here are frustrating you,an alternative method would be to go and let the "official" guessers in a Nissan garage check the motor out. That would probably cost a bit more than a tenner,though. Most times the guessers will have spent a lot more time trying to find a fix that is low cost and effective and will then be happy to share this knowledge with other forum members at no cost, however if that frustrates you, Main Dealer garages are there especially for people who feel the way you do about guessers. In fact ,the more people there are like you,the more the Main Dealers like it as it guarantees them a steady flow of victims.. sorry I meant customers.

 

[Timbo_1975]

there is nothing normal about it, if i take my revs up slowly from tickover there is no misfire and no smoke,if i rev it quickly there is.

I took the OP's problem to be when the motor is revved briskly which produces the misfire and the smoke in his vehicle, and ours. It will be more pronounced when the engine is cold, as you need more timing (fuel takes longer to burn).

I have considerable knowledge of the stock nissan ECU & mapping, and the symptom is a result of the stock programming, which cannot cope with a no load condition- it is caused by woefully retarded timing particularly around 2000rpm, which is where peak torque is produced- again a factor of the timing the stock map uses.

I'm using an aftermarket ecu now-custom mapped- and have no misfiring or blue smoke at all.

PS, I would not go messing with the actuator rod unless you know what you are doing, and have an accurate boost gauge installed.

 

[tezzer]

I took the OP's problem to be when the motor is revved briskly which produces the misfire and the smoke in his vehicle, and ours. It will be more pronounced when the engine is cold, as you need more timing (fuel takes longer to burn).

I have considerable knowledge of the stock nissan ECU & mapping, and the symptom is a result of the stock programming, which cannot cope with a no load condition- it is caused by woefully retarded timing particularly around 2000rpm, which is where peak torque is produced- again a factor of the timing the stock map uses.

I'm using an aftermarket ecu now-custom mapped- and have no misfiring or blue smoke at all.

PS, I would not go messing with the actuator rod unless you know what you are doing, and have an accurate boost gauge installed.

there you go guncharmer, FREE advise from a member who does know, that would proberly cost you a small fortune at a nissan garage, i could give you some more FREE advise, but as you are ungtratefull, im not.

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[zippy]

there is nothing normal about it, if i take my revs up slowly from tickover there is no misfire and no smoke,if i rev it quickly there is. unfortunately the mot test procedure is to quickly rev the motor and the ensuing cloud of smoke(mostly unburnt fuel ) can mean you wont pass the emissions unless you have a friendly tester and explain . i messed about adjusting the actuater rod to the turbo wastegate and got some improvement suggesting there is a connection. i dont recommend this though, i did it cos i was fed up but didnt really know what i was up to and might easily have messed something up.sometimes driving i can get a misfire,1st or 2nd gear highlights it and i am intending to mess with the rod again as i got rid of it before.l started messing(as i call it) as i get so frustrated with comments on here from guessers who dont know what the bloody hell they are on about. if toolbox cant help then there is not much hope of a forum fix.

well all I can do is guess cos I am shit with vehicle repair! All I am saying is that I have had the same symptoms for the length I have owned the car and nothing has happened to it - no loss of power, no fault codes, no repairs, no probs with MOT.

If I took my car to a nissan garage it would cost a fortune for them to tell me it was ok. If it aint broke, dont fix it.

Regards
Lee

 

[extreme-4x4]

hmm .... well i gotta say . yes toolbox is very good and very nice and helpfull, however timbo and terra both know there stuff too.
others know bits in there fields as well.

and all there help is always free.

as for guessers well yep there are plenty of them , me included . but as i always say some of the stuff we are doing is lots of guess work , some dont work , but we usually find that out with our own trucks , before we pass it on

but things on the horizon are looking very interesting . im sure this year we will have .
rear disc breaks (ready just waiting to be fitted)
front axel or lsd on front
a good fix for the steering is well on the way too . ( 2 meathods)
other fuel alternatives

so yes a lot of guessing and lots of interesting stuff on its way ,

but you dont have to take any advise offered . its your choice :thumbs

 

[guncharmer]

if you google terrano misfire,a link comes up to diesel bobs tuning tips and when you arrive at the page there is a list of common faults with different vehicles. as regards terrano 2.7(doesnt identify age or wether t2 etc) it states the springs inside the injector pump are prone to collapse resulting in power loss,missing/shudder,smoke. as i dont believe the terrano came out of the showroom missing when not under load/belching smoke then although aware of the reported ecu mapping i suspect the problem is age related and a weakening/collapse of springs in the pump sounds age related. now a really clued up experienced nissan diesel technician ought to have remedies for any running problem but unfortunately this forum does not have one. if an ecu remap/update or addition sorts it then brilliant i want it if i can afford it but dont want to gloss over what might be an underlying malady.

 

[extreme-4x4]

if you google terrano misfire,a link comes up to diesel bobs tuning tips and when you arrive at the page there is a list of common faults with different vehicles. as regards terrano 2.7(doesnt identify age or wether t2 etc) it states the springs inside the injector pump are prone to collapse resulting in power loss,missing/shudder,smoke. as i dont believe the terrano came out of the showroom missing when not under load/belching smoke then although aware of the reported ecu mapping i suspect the problem is age related and a weakening/collapse of springs in the pump sounds age related. now a really clued up experienced nissan diesel technician ought to have remedies for any running problem but unfortunately this forum does not have one. if an ecu remap/update or addition sorts it then brilliant i want it if i can afford it but dont want to gloss over what might be an underlying malady.

pop down the breakers then and and try another injector pump , or you could get one and have it refurbed at city electro deisel (swansea) or similar local to you then just swap yours for then new one.

that way you will know

 

[guncharmer]

or i could just set off in 3rd and keep it under load !
i suspect this is yet another thread without a proper remedy.beyond,mini filter,maf or change the fuel filter and lines there appears to be no help available

 

[(RIP) PLANK]

well i'm a messer and a guesser, if we were all flipping experts we would just fix everyhting and have nothing left to talk about. So long live the ameteur enthusiasts, of course if you think the £10 fee is too high for advice from enthusiastic DIY repairers with additions buy a few pro's then feel free to take it to your local main dealers and pay their hourly rate!

I bet they dont have a pub chat section either,

or free classsifieds

or Zippy

so there :hmh

i think the first thing we all learn my messing with motors is how frustrating it can be, good job we are here to take it out on isn't it?:thumbs

 

[eboy]

i saw a link to pump springs and contacted my local diesel specialists, and for a refurb he wants £400 so i will put up with it thats on or off the truck, what a rip off and im in the trade aswell, thanks for the replies still a tenner well spent though.
cheers eboy

 

[Timbo_1975]

i saw a link to pump springs and contacted my local diesel specialists, and for a refurb he wants £400 so i will put up with it thats on or off the truck, what a rip off and im in the trade aswell, thanks for the replies still a tenner well spent though.
cheers eboy

Trust me, if the pump springs were kaput, then it would hardly go at all, any load, that's if you could get it started.

 

[eboy]

Trust me, if the pump springs were kaput, then it would hardly go at all, any load, that's if you could get it started.

well theres no problem starting and pulls very well, so i can assume it aint the springs which is pleasing to know thank you timbo_1975, just need to sort out all the shite that comes out the back.

 

[danielj]

i saw a link to pump springs and contacted my local diesel specialists, and for a refurb he wants £400 so i will put up with it thats on or off the truck, what a rip off and im in the trade aswell, thanks for the replies still a tenner well spent though.
cheers eboy

Refurb cost me about double that. When mechanic sent me on to a diesel specialist I had a look on the internet to see if I could get some clues and not have to just take the specialists advice at face value. I had read the bit on the DieselBob site about springs in the pump so figured the specialist must be right so and I agreed to the refurb. When refurb was done I was told that the MAF was also replaced as it was no good.After some time on this site I am not so sure that the refurb was necessary. MAF certainly was necessary. Wish I had spent my tenner a few months earlier and had some good guesses I could have tested before agreeing to the refurb.

 

[guncharmer]

i definitely include myself as a messer and a guesser,though slowly experience has shown me to stop. 4 hours trying to get a back box off a vauxhall carlton with no success,even bought a blow torch.whipped it down to a garage and a pneumatic chisel sorted it in less than a minute! i have just installed a 95AH varta battery which meant installing new earth straps as the originals wouldnt reach the terminals..first time starter every time.
i apologise if anyone was offended by my earlier remark about guessers not knowing what the bloody hell they are on about but in the cold light of day i find myself still agreeing with that statement. it is not difficult to get value for the £10 subscription fee but there is definitely a lack of specialist knowledge and i say this because i do frequent other forums,pocuk and omega owners.
so my suggestion is increase the subscription if neccesary and have experts available.there has to be people out there that have fixed running problems with a scientific and methodical approach. there are definitely terrano owners out there living with less than perfect running and replacing a fuel pump is not cost effective especially when its not even guaranteed to be the problem.

 

[Liam]

i definitely include myself as a messer and a guesser,though slowly experience has shown me to stop. 4 hours trying to get a back box off a vauxhall carlton with no success,even bought a blow torch.whipped it down to a garage and a pneumatic chisel sorted it in less than a minute! i have just installed a 95AH varta battery which meant installing new earth straps as the originals wouldnt reach the terminals..first time starter every time.
i apologise if anyone was offended by my earlier remark about guessers not knowing what the bloody hell they are on about but in the cold light of day i find myself still agreeing with that statement. it is not difficult to get value for the £10 subscription fee but there is definitely a lack of specialist knowledge and i say this because i do frequent other forums,pocuk and omega owners.
so my suggestion is increase the subscription if neccesary and have experts available.there has to be people out there that have fixed running problems with a scientific and methodical approach. there are definitely terrano owners out there living with less than perfect running and replacing a fuel pump is not cost effective especially when its not even guaranteed to be the problem.

And there's the rub. This forum is not meant to have specialists on here and as a past member of POCUK,I know there was a few people on there who did have specialists knowledge of Pajero's. This is an owners club,and in fact you don't even need a Nissan to be a member. so if we are lucky enough to have a few members with a good working knowledge of Nissans (and we do),then it is a bonus and comes at a nominal cost. I think you are being unfair to a lot of the people on here and I would also suggest that even the best Nissan dealership will sometimes struggle to solve issues that people may have with their motors. What do you do if you are prepared to pay any money to get a car fixed but the Main Dealer garage are stumped? Sometimes life throws a curved ball and if you have a motor with issues that frustrate you,shift it and hope the next one you get is better. I still think your initial comments,while probably seeming reasonable to you were unnecessary and certainly wouldn't encourage people to be in a hurry to offer you advice. Increasing the membership to have specialists available,if you thinkMaybe,just maybe , the world doesn't just revolve around you alone. Step back,take a breath and hopefully have a Happier New Year in 2010.
You could try these guys,but they guess AND charge for their answers.

http://www.justanswer.com/(gp5ob0ii5burvrqyh2mivf55)/

 

[eboy]

i quite agree thats why i joined, as members have more experiance with these motors than i do, considering i work for a main dealer (ford), but we dont get any mavericks in so dont really know a lot only read through workshop manuals, but we do guess aswell but the differance is we can fit parts if dont fix it take em off with out paying, so a tenner for advice you dont have to take is well worth it,if its a commom fault then no guessing but if it aint then i would say most garages will guess to a point.