Skyline Stop Running :(

[5ky-lin3]

Ok guys I just need some opinions on what may or may not have happened to my car,

Recently (under 3 weeks) I have fully changed the exhaust which inc. a screamer and decat being 3" all the way, re-gapped my plugs to .8mm, and put an aftermarket BOV on. After having all of these on for at least over a week (except the BOV which was put on the day before) when driving my car yesterday after coming off the lights it eventually just lost power and wasn't firing properly which caused me to pull over.

After I pulled over and got to a stop it had a lot of trouble trying to idle and moved anywhere between 0rpm-1.5rpm before it eventually stalled, it done this each startup. At first I thought I had done the turbo because it was spooling all that well and there was more than enough black smoke coming out the rear!

However after I had it towed back to my mechanic because I couldnt drive it more than 2meters without it stalling. On first inspection they suspected either the turbo or some internal problem (eg: valve) but after closer inspection they put it down that my stock ecu which hasnt yet been tuned to my few mods (only couple weeks away ) had shat its self because it wasnt able to teach its self how to run properly with the mods, and the black smoke was a result of it running far to much fuel than it needed.

I'm just wondering what some peoples thoughts are on this problem and whether my mechanic is right (im a bit hesitant to believe that just a tune will fix it because they have never really worked with turbos before) ? Please make it good news

Cheers,

Dallas

[R33 Eddy]

change back to your stock BOV first

[KiwiRS4T]

Ok guys I just need some opinions on what may or may not have happened to my car,

Recently (under 3 weeks) I have fully changed the exhaust which inc. a screamer and decat being 3" all the way, re-gapped my plugs to .8mm, and put an aftermarket BOV on. After having all of these on for at least over a week (except the BOV which was put on the day before) when driving my car yesterday after coming off the lights it eventually just lost power and wasn't firing properly which caused me to pull over.

After I pulled over and got to a stop it had a lot of trouble trying to idle and moved anywhere between 0rpm-1.5rpm before it eventually stalled, it done this each startup. At first I thought I had done the turbo because it was spooling all that well and there was more than enough black smoke coming out the rear!

However after I had it towed back to my mechanic because I couldnt drive it more than 2meters without it stalling. On first inspection they suspected either the turbo or some internal problem (eg: valve) but after closer inspection they put it down that my stock ecu which hasnt yet been tuned to my few mods (only couple weeks away ) had shat its self because it wasnt able to teach its self how to run properly with the mods, and the black smoke was a result of it running far to much fuel than it needed.

I'm just wondering what some peoples thoughts are on this problem and whether my mechanic is right (im a bit hesitant to believe that just a tune will fix it because they have never really worked with turbos before) ? Please make it good news

Cheers,

Dallas

Your ecu is not tunable. Do a search for the alternatives. Stick your stock bov back on.

[Dose Pipe Sutututu]

put your stock BOV on and take off that rice shiet, or plumb back that crap

[chiksluvit]

check the factory bov plumb back pipe, there might be leaks causing engine to suck in unmetered air

and check/clean AFM

Edited September 17, 2010 by chiksluvit

[wolverine]

Boost leak? Check all the induction piping for a loose hose clamp or a split hose.

[MrR33666]

is it a bov that vents to atmosphere?

if so thats your problem.

[Rolls]

As everyone has said the BOV is almost certainly causing the air flow readings to get stuffed up take it off or at least block it off. Also take it to a proper performance mechanic that has experience with similar cars next time, will save a lot of time wasted on diagnostics that someone who has seen the problems before will pick up immediately

[Moodles2]

Correct, you can't vent air (BOV) to the atmosphere with AFMs without a tune to suit as it needs to be tuned out. MAF sensors measure the air as it comes in, the stock ECU is expecting that ammount of air to arrive in the intake manifold, the stock BOV works by recirculating the air back into the air intake. What you have done is starve your engine of air.

[5ky-lin3]

It has a changable BOV which when it stuffed up was on atmospheric which would explain why it did, but I since have changed to the plumb back setting and it hasn't fixed it still?

[Dose Pipe Sutututu]

there's an air leak somewhere, it's sucking in air that's not being reigstered by the AFM..

are you running a wank spec atom catch can?

[5ky-lin3]

all stock apart from the parts stated earlier (exhaust, POD, regap plugs, BOV).. Im putting down to the BOV atm, will turn it back to plumb back and have a go at reseting the ecu tonight..

[ClutchBurndout-:(]

plugs not issue

zorst not issue

ecu not the issue, and wont shit itself with diff mods, it isnt tunable

bov is the issue

ur car wouldnt react so badly if it was rich, it would just run really rich and slower with black smoke

[5ky-lin3]

so to turn the BOV back to plumb and ecu reset will fix it?

[Rolls]

so to turn the BOV back to plumb and ecu reset will fix it?

If that is the issue, strike off one issue at a time until you find the cause, the bov is the most likely cause at the moment.

[StealthX]

Fuel pump?

[5ky-lin3]

Just went and fiddled with my car again today after finally finishing all my drinking for the grand final weekend lol..

Tried resetting the ECU by removing the neg terminal and pumping the brakes , lights etc until all power was gone (after turning the BOV back to plumb back) , hooked the battery back up and started.. At first it seemed ok and was idling fine until after a couple of short revs where it started to range over 1000rpm differences. So it obviously hasnt worked yet but I plan to go back tomorrow and put the stock BOV back on and try the same again to see if that has an effect :S ..

[wolverine]

Have you checked for vacuum leaks as suggested earlier?

[3LGODZILA]

does is run with the afm disconnected?

[r32-25t]

Has anyone thought it maybe has popped a hose off?