EvolutionM - Mitsubishi Lancer and Lancer Evolution Community

Notices
Evo X Engine / Turbo / Drivetrain Everything from engine builds to the best clutch and flywheel.

Evo sounds like a Subaru under boost?

Thread Tools
 
Search this Thread
 
Old Nov 7, 2016, 10:29 AM
  #1  
Newbie
Thread Starter
iTrader: (1)
 
Evo_Xela's Avatar
 
Join Date: Mar 2014
Location: TX
Posts: 57
Likes: 0
Received 0 Likes on 0 Posts
Evo sounds like a Subaru under boost?
Hey guys, so my Evo started doing this weird thing last week. It drives fine under normal driving but I've noticed even I start making boost, at about 15 psi it starts making a bad rumbling noise from the exhaust , the car shakes, it doesn't feel like it's boosting and I was told it was making black smoke.
I thought maybe it was bad gas. I had filled up on my way back from outta town at a Valero in a small town . 91 Oct. So I emptied the gas tank and filled up at a road ranger 92 Oct (top tier gas btw) reset the ecu on my Cobb. And the problem went away. I did a Lotta pulls and it drove fine.

Well last night it started doing the same thing. I notice too that when it acts up my wideband reads 13. Under normal WOT I read about 11.8 - 12 afr. My boost gauge reads that it's hitting 26 psi. Anyone ever have this issue before ? Idk where to start looking tbh. Thanks
Evo_Xela is offline  
Reply Like
Old Nov 7, 2016, 10:55 AM
  #2  
Evolved Member
 
4b11slayer's Avatar
 
Join Date: Nov 2015
Location: Santa Ana
Posts: 1,787
Received 89 Likes on 88 Posts
Sounds like a misfire. What do your plugs look like.
4b11slayer is offline  
Reply Like
Old Nov 7, 2016, 11:25 AM
  #3  
Newbie
Thread Starter
iTrader: (1)
 
Evo_Xela's Avatar
 
Join Date: Mar 2014
Location: TX
Posts: 57
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by 4b11slayer
Sounds like a misfire. What do your plugs look like.
I will check as soon as I get home
Evo_Xela is offline  
Reply Like
Old Nov 7, 2016, 04:40 PM
  #4  
Newbie
Thread Starter
iTrader: (1)
 
Evo_Xela's Avatar
 
Join Date: Mar 2014
Location: TX
Posts: 57
Likes: 0
Received 0 Likes on 0 Posts

I think they've seen better days
Evo_Xela is offline  
Reply Like
Old Nov 7, 2016, 06:11 PM
  #5  
Evolved Member
 
4b11slayer's Avatar
 
Join Date: Nov 2015
Location: Santa Ana
Posts: 1,787
Received 89 Likes on 88 Posts
Wtf
4b11slayer is offline  
Reply Like
Old Nov 7, 2016, 06:11 PM
  #6  
Evolved Member
 
4b11slayer's Avatar
 
Join Date: Nov 2015
Location: Santa Ana
Posts: 1,787
Received 89 Likes on 88 Posts
Ditch those plugs right now!!!! Its a good starting point being the way they look.


Dayuuum
4b11slayer is offline  
Reply Like
Old Nov 7, 2016, 08:01 PM
  #7  
Newbie
Thread Starter
iTrader: (1)
 
Evo_Xela's Avatar
 
Join Date: Mar 2014
Location: TX
Posts: 57
Likes: 0
Received 0 Likes on 0 Posts
Oh yea. Those dudes are gone . I noticed my piston heads looked kinda black too smh
Last edited by Evo_Xela; Nov 7, 2016 at 08:02 PM. Reason: Typo
Evo_Xela is offline  
Reply Like

Trending Topics

Old Nov 7, 2016, 08:02 PM
  #8  
Evolved Member
 
4b11slayer's Avatar
 
Join Date: Nov 2015
Location: Santa Ana
Posts: 1,787
Received 89 Likes on 88 Posts
Piston dome usually turns black pretty normal for a internal combustion engine.
4b11slayer is offline  
Reply Like
Old Nov 8, 2016, 04:47 AM
  #9  
Newbie
 
strykr's Avatar
 
Join Date: Nov 2013
Location: Alberta
Posts: 65
Likes: 0
Received 9 Likes on 9 Posts
Have you ever changed the plugs since you bought the car?

The plugs look like they came from a 60-70's car rotting away in some field!

Those definitely need changing!
strykr is offline  
Reply Like
Old Nov 8, 2016, 11:59 AM
  #10  
Newbie
Thread Starter
iTrader: (1)
 
Evo_Xela's Avatar
 
Join Date: Mar 2014
Location: TX
Posts: 57
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by strykr
Have you ever changed the plugs since you bought the car?

The plugs look like they came from a 60-70's car rotting away in some field!

Those definitely need changing!
Yea! I changed them back at 40,000 miles. I'm at 72k right now. I think the rust is from when I cleaned my engine bay.
Evo_Xela is offline  
Reply Like
Old Nov 11, 2016, 05:51 AM
  #11  
Newbie
Thread Starter
iTrader: (1)
 
Evo_Xela's Avatar
 
Join Date: Mar 2014
Location: TX
Posts: 57
Likes: 0
Received 0 Likes on 0 Posts
Update : I changed my plugs last night. Did a couple pulls this morning on the way to and from the gym and she pulled like a champ it looks like she's fixed *knocks on wood
Evo_Xela is offline  
Reply Like
Old Nov 11, 2016, 06:38 AM
  #12  
Evolved Member
iTrader: (18)
 
Ev0ikon's Avatar
 
Join Date: Jan 2004
Location: 3rd Rock {from = sun}
Posts: 3,677
Received 9 Likes on 9 Posts
Originally Posted by Evo_Xela
Yea! I changed them back at 40,000 miles. I'm at 72k right now. I think the rust is from when I cleaned my engine bay.
Looks like water got into ALL of the plug wells.
Ev0ikon is offline  
Reply Like
Old Nov 11, 2016, 07:17 AM
  #13  
Evolved Member
 
4b11slayer's Avatar
 
Join Date: Nov 2015
Location: Santa Ana
Posts: 1,787
Received 89 Likes on 88 Posts
Glad to hear you got it all sorted out.
4b11slayer is offline  
Reply Like
Old Nov 16, 2016, 09:27 AM
  #14  
Evolved Member
 
hoobastnk90's Avatar
 
Join Date: Feb 2012
Location: Ofallon, MO
Posts: 1,253
Received 21 Likes on 21 Posts
Im shocked at how much those rusted!
hoobastnk90 is offline  
Reply Like
Old Nov 16, 2016, 12:16 PM
  #15  
Evolved Member
 
six40's Avatar
 
Join Date: Nov 2012
Location: Ontario, Canada
Posts: 522
Received 61 Likes on 52 Posts
Jesus I've pulled field cars out that have been sitting for a decade and the plugs looked better than that. Glad you got your issue solved.
six40 is offline  
Reply Like
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Evo8 sounds like Subaru, Help!
Liqquid
Evo Engine / Turbo / Drivetrain
41
Oct 9, 2016 08:27 PM
My Evo sounds like a Subaru and I feel stupid.
NoReason
Evo General
4
Jul 29, 2015 06:35 PM
Evo 8 missing sounds like a Subaru. Need help!!
P0411
Evo Engine / Turbo / Drivetrain
16
Jan 12, 2015 05:01 PM
Evo 8 sounds like a subaru.
re-rx7
Evo Engine / Turbo / Drivetrain
4
Oct 21, 2012 02:24 PM
Evo 9 sounds like a subaru
evoe85
Evo Engine / Turbo / Drivetrain
21
Sep 13, 2012 08:32 PM
Back to Subforum
Evo X Engine / Turbo / Drivetrain
View Next Unread
MBC/boost gauge hook up problem




Advanced Search
Quick Reply: Evo sounds like a Subaru under boost?


Reply Closed Thread Share

All times are GMT -7. The time now is 05:09 AM.