View Full Version : running a bit pish
suprakid
23-09-04, 07:17 PM
i got my supra back yesterday with it's new engine but it isn't running right at all. it is a mk111 turbo 1990. when it is cold i have to sit with my foot on the accelerator just to keep it running. when i rev it it sounds as if there is a miss fire. when the car has warmed up it will idle ok but it still sounds a bit rough when it is revved. there is a bluey black smoke the whole time. could it be timing? or has something not been set right. please help
cheers roy
black 90t
black 86 supra
23-09-04, 07:30 PM
Blue smoke?? sounds like Turbo is shot, although keeping it running by reving it could be afm, leads or plugs.
someone will be along shortly to help
I guess it could be timing. I'd check for vacuum and air leaks first. Make sure that all of the vacuum pipes are where they should be. Check for splits and holes. Listen out for hissing that could be air being sucked in. Then check the timing as per the TRSM. Any history on the engine? If it won't idle at all then it is probably going to be a 2 man job.
Bondango
23-09-04, 08:05 PM
if u mean head and block replaced then u will need to spend a good 3 or 4 hours checking all the connections and earths. check the AFM plugs, CPS plugs, coil packs and connections. as lofty says check every vacum line and intake pipe for leaks and tightness. sounds like its running way rich, check the Cold start connections, injector connectors etc etc
suprakid
23-09-04, 11:04 PM
I had a wee look over it tonight. I doubt it's the turbo as it has only done few thousand miles but i noticed the boost guage has stopped working. possibly not connected back up, could that maybe cause a prob. The airflow meter got changed when it was away. I'll do a blink code check on it tomorrow and see what that comes up with. I think i'll just need to knuckle in to it tomorrow and check all the pipes and stuff.
Cheers for the tips
Roy 90t
black 86 supra
23-09-04, 11:10 PM
ok so either the turbo is fooked or as you say, the hose isn't conected which will cause that problem.
allywrx
24-09-04, 03:02 PM
Hmmmmm :banghead:
As we discussed Roy, could be an air leak, car is definately overfuelling.
Suggest check all turbo/ ic hose connections and vaccum pipes are all on correctly and take it from there if still the same?
Does anyone know a site with vaccum hose routing diagrams?
Process of elimination :yes:
regarding the AFM being changed.. theres a weird condition that sometimes occurs when changing AFM's.
For some reason there are two type of AFM for the 3.0turbo, one ends in a 010 part code and the other ends in a 011. On some cars you have to get the same model number as you had before, otherwise the car wont run right (similar symptoms to yours) , but on other cars you can use either. Its odd as to why this happens but it does.
so, make sure your new AFM is the same model number as the one that was removed...
allywrx
25-09-04, 11:50 AM
regarding the AFM being changed.. theres a weird condition that sometimes occurs when changing AFM's.
For some reason there are two type of AFM for the 3.0turbo, one ends in a 010 part code and the other ends in a 011. On some cars you have to get the same model number as you had before, otherwise the car wont run right (similar symptoms to yours) , but on other cars you can use either. Its odd as to why this happens but it does.
so, make sure your new AFM is the same model number as the one that was removed...
This looks promising.
Hopefully Roy gets out of bed soon so we can check it
Hope these help :bigeyes:
http://img.photobucket.com/albums/v11/Sean.40/vac-hose.gif
http://img.photobucket.com/albums/v11/Sean.40/vac-hose2.gif
http://img.photobucket.com/albums/v11/Sean.40/vac-hose3.gif
http://img.photobucket.com/albums/v11/Sean.40/vac-hose4.gif
http://img.photobucket.com/albums/v11/Sean.40/vac-hose5.gif
suprakid
25-09-04, 05:28 PM
Cheers for the diagram, a bit of searching will be done. I did a code check last night and it came up code 31 afm so things are starting to come together now. Can i fit a lexus afm and still run standard injectors or do i need to get the bigger ones? Also what kind of money is in them? I ran it with the afm disconnected and it was exactly the same.
cheers, Roy
very shiny 90t(well i cant drive it yet so i might as well clean it)
Cheers for the diagram, a bit of searching will be done. I did a code check last night and it came up code 31 afm so things are starting to come together now. Can i fit a lexus afm and still run standard injectors or do i need to get the bigger ones? Also what kind of money is in them? I ran it with the afm disconnected and it was exactly the same.
cheers, Roy
very shiny 90t(well i cant drive it yet so i might as well clean it)
as i understand it the lex afm flows 25% more air than stock, so to balance things out you must use bigger injectors 550s are the ones of choice failure to do so will result in a massivly lean fuel air mix, with dire results, holes in pistons etc
allywrx
28-09-04, 11:41 AM
Cheers for the diagram, a bit of searching will be done. I did a code check last night and it came up code 31 afm so things are starting to come together now. Can i fit a lexus afm and still run standard injectors or do i need to get the bigger ones? Also what kind of money is in them? I ran it with the afm disconnected and it was exactly the same.
cheers, Roy
very shiny 90t(well i cant drive it yet so i might as well clean it)
Roy
Did you check the afm part numbers as adi mentioned?
Any joy with the vaccum pipes?
Sorry haven't popped round to give you a hand but I 've been busy polishing my HKS actuator :cheeky:
Also, can you run 550's on the standard management system?
I know with my 200 if you fit an uprated FPR and crank it up, the injectors flow the equivelant of 440's (but at a higher duty cycle :confused: )
buttmunch
28-09-04, 01:46 PM
as i understand it the lex afm flows 25% more air than stock, so to balance things out you must use bigger injectors 550s are the ones of choice failure to do so will result in a massivly lean fuel air mix, with dire results, holes in pistons etc
This is not strictly true, you can run 440's with the Lex afm but you will need to use an S-AFC to adjust the mixture.
suprakid
28-09-04, 06:22 PM
I've checked all the pipes and joints except for the boost guage(which isn't working anymore). Does anyone know where the boost guage gets it's feed? and where does it go through the firewall?
cheers
darket69
28-09-04, 09:44 PM
I've checked all the pipes and joints except for the boost guage(which isn't working anymore). Does anyone know where the boost guage gets it's feed? and where does it go through the firewall?
cheers
The boost guage get its feed from a unit on the passenger side inner wing and joins the main loom it it located just beside the turret mount , the unit is vacume fed from the inlet manifold .. infact its actually labled "boost sensor" if i remember correctly
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