black smoke when decelerating
Sep 8, 2009, 01:29 AM
#1
Newbie
Thread Starter
Join Date: Jul 2008
Location: Malaysia
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
black smoke when decelerating
here u go guys. watch the video. check out the black smoke when ever i released the throttle.
it seems to continuosly puff black smoke when i off the throttle after WOT
http://www.youtube.com/watch?v=ZVYhXcrQg7U
tell me what u guys think the prob is
Car is still makin power, just made 300whp on Dynodyamics recently. so engine is healthy
it seems to continuosly puff black smoke when i off the throttle after WOT
http://www.youtube.com/watch?v=ZVYhXcrQg7U
tell me what u guys think the prob is
Car is still makin power, just made 300whp on Dynodyamics recently. so engine is healthy
Sep 8, 2009, 01:40 PM
#3
Evolving Member
iTrader: (1)
Join Date: Sep 2008
Location: Peru
Posts: 167
Likes: 0
Received 0 Likes
on
0 Posts
i thing bad tunning ,...... too much fuel !! check your maps! and your wide band
BTW i think you can go faster lol what turbo are you running!
it is always nice to see the SUBARU in the back and not infront lol!
BTW i think you can go faster lol what turbo are you running!
it is always nice to see the SUBARU in the back and not infront lol!
Sep 9, 2009, 12:04 AM
#4
Newbie
Thread Starter
Join Date: Jul 2008
Location: Malaysia
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
running stock turbo.
using ecu for boost and external wastegate
CAI
Full exhaust
HKS 272 cams
reflash
AFR at 11.5. so is not that rich.
leaky injectors huh? anything else?
using ecu for boost and external wastegate
CAI
Full exhaust
HKS 272 cams
reflash
AFR at 11.5. so is not that rich.
leaky injectors huh? anything else?
Sep 9, 2009, 02:31 AM
#5
Newbie
Thread Starter
Join Date: Jul 2008
Location: Malaysia
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Sep 20, 2009, 09:25 AM
#6
Newbie
Thread Starter
Join Date: Jul 2008
Location: Malaysia
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
hei guys,
can ya help list out what could be the prob please.
yes i am using VTA BOV. but isnt it too long duration of of trailing smoke after lift off?
i know the MAF reading becomes inaccurate when air is vent out but i've seen other evos using HKS SSQV VTA but with no prob.
what other faults u might think. i prob will test it 1 by 1.
1) VTA BOV
2) leaky injectors?
3) inaccurate TPS
thanks
can ya help list out what could be the prob please.
yes i am using VTA BOV. but isnt it too long duration of of trailing smoke after lift off?
i know the MAF reading becomes inaccurate when air is vent out but i've seen other evos using HKS SSQV VTA but with no prob.
what other faults u might think. i prob will test it 1 by 1.
1) VTA BOV
2) leaky injectors?
3) inaccurate TPS
thanks
Sep 20, 2009, 09:53 AM
#7
Newbie
Join Date: Aug 2009
Location: New Jersey
Posts: 68
Likes: 0
Received 0 Likes
on
0 Posts
Which injectors are you running? It has to be a fuel related problem
due to the black appearing smoke. Have you checked and or replaced
the sparkplugs recently? Also excessive carbon deposits in the combustion
chamber and or on the plugs can cause this condition as well.
due to the black appearing smoke. Have you checked and or replaced
the sparkplugs recently? Also excessive carbon deposits in the combustion
chamber and or on the plugs can cause this condition as well.
Trending Topics
Sep 20, 2009, 06:19 PM
#8
I'm not going to say that this is absolutely the problem but I would check your fuel maps...There are a few people on here that like to ridiculously richen up the maps to kick a few flames when shifting 
It's obvious that you're dumping fuel so check your maps before you fumble with the injectors.
It's obvious that you're dumping fuel so check your maps before you fumble with the injectors.
Last edited by Babs; Sep 20, 2009 at 06:21 PM.
Sep 21, 2009, 01:25 AM
#10
Newbie
Thread Starter
Join Date: Jul 2008
Location: Malaysia
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
hei guys,
i just replaced the plugs bout 3 months ago. n even with new plugs it was still the same. coud a leaky oil return seal at the turbo cause this prob? i read somewhere it can cause black smoke when decelerating.
i just replaced the plugs bout 3 months ago. n even with new plugs it was still the same. coud a leaky oil return seal at the turbo cause this prob? i read somewhere it can cause black smoke when decelerating.
