whiteboy01 Posted December 23, 2008 Share Posted December 23, 2008 Hey guys, I have owned the GTR for about 2 years now and have blow 2 lots of turbos in that time. Being a poor bastard and liking the stock power I replaced them with stock ones again. That was all fine and dandy makeing about 0.9 Bar boost all day every day. The car is completly stock engine wise. Basic support mods include HKS Intercooler, HKS Exhuast and HKS BOV. Stock ECU, Injectors ect Now heres my problem. I have been using it as my dayly driver for abit now giving it a fairly easy life putting around in traffic. Now all of a sudden it doesn't like to boost pass 0.6 bar and blows a f**k load of smoke out the back. Missfires and doesn't go very fast. The car still revs to 7.5k, idles fine, builds boost quickly as well. Smokey ilde sometimes. I have checked the following - Blocked BOV - Didnt notice and different Checked all pipping - intercooler hoses and fuel lines - all ok here Reset ECU - no change Checked for shity fuel with water in it. Flushed tank - still the same Going to do a compression test this weekend will report back with what i find, the problem is i have done alot of research and it points to a leaking intercooler pipe. Checked all the piping a million times now and still nothing comes up. I also can't take it to a machinic because i live in a small rural town full of FORDs and Holdens and the mechs scratch there heads with my car. My last resort will be chucking it in the back or a trailer and taking it to HyperDrive MS. Cheers, Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/ Share on other sites More sharing options...
Moodles2 Posted December 23, 2008 Share Posted December 23, 2008 How are the spark plugs? Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4333254 Share on other sites More sharing options...
whiteboy01 Posted December 23, 2008 Author Share Posted December 23, 2008 How are the spark plugs? Replaced with cheap cooper then irduims. Coopers were PITCH black. same both times. Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4333266 Share on other sites More sharing options...
Mike__ Posted December 23, 2008 Share Posted December 23, 2008 black smoke is excess fuel checked AFM's? Mine started to occasional stall whilst on light load. needed cleaning and now all good, better + better throttle response. Checked plugs / gaps / leads ?? with increased boost the spark can be 'blown' out with a large gap/stuffed plug as boost increases yeh can imagine very few nissan turbos floating round in gero Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4333274 Share on other sites More sharing options...
whiteboy01 Posted December 23, 2008 Author Share Posted December 23, 2008 Yep only r32 GTR in town. Makes it hard sometimes.... New spark plaugs were graped to .08? or .8? one of the two. AFM are a bitch to get to will check tomorrow. Could it be a piston that is stuffed? Thanks for the hints. Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4333375 Share on other sites More sharing options...
Mike__ Posted December 24, 2008 Share Posted December 24, 2008 (edited) Dont know the gaps of the top of my head, never replaced/regapped mine, do a search the problem doesnt sound mechanical as you said the car idles fine/normal & builds boost as per normal. am thinking a boost leak but you've said you already checked all hoses. could be a stuck open bov. you've dropped 0.3 bar all of a sudden and theres misfiring, spluttering so am thikning theres still 0.9bar worth of fuel going in Edited December 24, 2008 by Mike__ Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4334317 Share on other sites More sharing options...
whiteboy01 Posted December 24, 2008 Author Share Posted December 24, 2008 Dont know the gaps of the top of my head, never replaced/regapped mine, do a searchthe problem doesnt sound mechanical as you said the car idles fine/normal & builds boost as per normal. am thinking a boost leak but you've said you already checked all hoses. could be a stuck open bov. you've dropped 0.3 bar all of a sudden and theres misfiring, spluttering so am thikning theres still 0.9bar worth of fuel going in Just for a update the car is struggling to idle now, blowing black smoke on idle. Car still revs fine but with alot of miss fire. Compression test will tell whats wrong. Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4334346 Share on other sites More sharing options...
Dearlove Posted December 24, 2008 Share Posted December 24, 2008 hey white boy, your not the bloke with the blue gtr that i raced a few months back in my white one?? Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4334570 Share on other sites More sharing options...
whiteboy01 Posted December 24, 2008 Author Share Posted December 24, 2008 hey white boy, your not the bloke with the blue gtr that i raced a few months back in my white one?? Yer man... had a few goodies since then. Now she is stuffed, hardly idles and blows white and blue smoke now... Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4334661 Share on other sites More sharing options...
Jet 20 Posted December 24, 2008 Share Posted December 24, 2008 Yer man... had a few goodies since then. Now she is stuffed, hardly idles and blows white and blue smoke now... definently comp test it. white smoke is unburnt fuel and blue is oil smoke. almost sounds like a hole in a piston.. Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4334744 Share on other sites More sharing options...
bnr#@ Posted December 24, 2008 Share Posted December 24, 2008 (edited) definently comp test it.white smoke is unburnt fuel and blue is oil smoke. almost sounds like a hole in a piston.. Just to correct that, White smoke is coolant Black is Petrol Blue is oil Edited December 24, 2008 by bnr#@ Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4334824 Share on other sites More sharing options...
Jet 20 Posted December 24, 2008 Share Posted December 24, 2008 Just to correct that, White smoke is coolant Black is Petrol Blue is oil what ever mate. EXCESS fuel is black smoke. UNBURNT fuel from not unuf compression or no spark is white smoke. water smoke is steam not smoke. Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4334977 Share on other sites More sharing options...
whiteboy01 Posted December 25, 2008 Author Share Posted December 25, 2008 what ever mate.EXCESS fuel is black smoke. UNBURNT fuel from not unuf compression or no spark is white smoke. water smoke is steam not smoke. So now compression test is next.... If it is a piston that is stuffed is it possible to do a RB30 NA swap over? Any good guids out? I have found the PDF but it skipped alot of things like ECU ect.... Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4335134 Share on other sites More sharing options...
Mike__ Posted December 26, 2008 Share Posted December 26, 2008 blue smoke is oil burning white smoke is oil heating up not being burnt. You might have a shagged turbo check coolant/oil levels & if there contaminated by one or the other. agree to do a compression & leak down test Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4335886 Share on other sites More sharing options...
Dearlove Posted December 26, 2008 Share Posted December 26, 2008 [if it is a piston that is stuffed is it possible to do a RB30 NA swap over? Any good guids out? I have found the PDF but it skipped alot of things like ECU ect.... im thinking of doing an rb30 conversion as well, we'll have to have another drag after, lol Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4336111 Share on other sites More sharing options...
whiteboy01 Posted December 28, 2008 Author Share Posted December 28, 2008 [if it is a piston that is stuffed is it possible to do a RB30 NA swap over? Any good guids out? I have found the PDF but it skipped alot of things like ECU ect....im thinking of doing an rb30 conversion as well, we'll have to have another drag after, lol compression test done 1st 140 2nd 140 3rd 150 4th 150 5th 130 6th 130 All rough figures being noob at it doesn't help. Give or take 5PSI. So what does this mean? Everything ok? I'm leaning towards the turbos now. Is there any way to check? Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4337650 Share on other sites More sharing options...
peter_fc Posted December 28, 2008 Share Posted December 28, 2008 Have you checked fuel pressure? Iv'e seen excess fuel pressure give the same symptoms your talking about. Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4337782 Share on other sites More sharing options...
peter_fc Posted December 28, 2008 Share Posted December 28, 2008 Did you check AFM's also?? Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4337794 Share on other sites More sharing options...
Adriano Posted December 28, 2008 Share Posted December 28, 2008 Do a diagnostic search, could easily be an AFM or cas or igniter. Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4337810 Share on other sites More sharing options...
whiteboy01 Posted December 28, 2008 Author Share Posted December 28, 2008 Do a diagnostic search, could easily be an AFM or cas or igniter. Ok how do i check the AFM? I have unpluged them and notice both times the car nearly stalling but car ran the same. Do i need to clean them? If so what with? I have the stock air box and just a panel filter. CAS? Crank angle sensor? is that on the front of the engine? Unpluged that and the car didn't start. Pluged it back in and the car was the same. Fuel. Don't know how i'm spose to check the fuel pressure. I will ask my mech mate tomorrow. Link to comment https://www.sau.com.au/forums/topic/249980-r32-gtr-with-black-smokemiss-fire/#findComment-4337817 Share on other sites More sharing options...
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