Notices
Series I Tech Garage The place to discuss anything technical about the RX-8 that doesn't fit into any of the categories below.

problems after new motor from mazda. tech says that its running rich

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 05-22-2011, 11:10 AM
  #1  
U.S ARMY 11B
Thread Starter
 
WAR CRUNK's Avatar
 
Join Date: Nov 2007
Location: I AM THE INFANTRY FOLLOW ME!
Posts: 455
Likes: 0
Received 0 Likes on 0 Posts
problems after new motor from mazda. tech says that its running rich

hey guys i recived a new motor from mazda before i went to drive it home the tech said that im runnin extremly rich. they asked me about a flashed ecu which i did do a data log for my AP. I did this before i get a new motor. I borught my car to the dealer when it started to "bog" and "sputter" at about 4-5 k rpms. I reflashed my ecu with the "2004 MT reflash" from my cobb and still no change. Also with the brake pumping test still no change. he said that my injecotrs were spraying 25% more than normally causing it to run rich. so any help is awsome
Old 05-22-2011, 11:14 AM
  #2  
Registered
iTrader: (2)
 
RIWWP's Avatar
 
Join Date: Oct 2007
Location: Pacific Northwest
Posts: 16,684
Likes: 0
Received 240 Likes on 110 Posts
Sounds like your MAF isn't reading.

When I forgot to plug my MAF back in, it was insanely rich, fuel spitting out the tailpipe rich, and wouldn't rev over ~4k from getting just drenched in fuel.
Old 05-22-2011, 11:20 AM
  #3  
U.S ARMY 11B
Thread Starter
 
WAR CRUNK's Avatar
 
Join Date: Nov 2007
Location: I AM THE INFANTRY FOLLOW ME!
Posts: 455
Likes: 0
Received 0 Likes on 0 Posts
parts game huh....looks like ill pull the maf and go from there^ thanks man
Old 05-22-2011, 11:25 AM
  #4  
U.S ARMY 11B
Thread Starter
 
WAR CRUNK's Avatar
 
Join Date: Nov 2007
Location: I AM THE INFANTRY FOLLOW ME!
Posts: 455
Likes: 0
Received 0 Likes on 0 Posts
no CEL
Old 06-12-2014, 03:46 PM
  #5  
Registered
 
40thanniversaryrx8's Avatar
 
Join Date: May 2010
Location: Omaha, Ne
Posts: 181
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by WAR CRUNK
parts game huh....looks like ill pull the maf and go from there^ thanks man
hey man I just got a new motor put in and picked the car up maybe 3 weeks ago. I'm having the EXACT same problem running really rich and it seriously bogs and then struggles moving past 5 or 6k rpms. Did you remedy this problem? any help would be very much appreciated man!
Old 06-12-2014, 04:31 PM
  #6  
Driving my unreliable rx8
 
logalinipoo's Avatar
 
Join Date: Oct 2012
Location: Alvarado, Tx
Posts: 2,051
Received 5 Likes on 5 Posts
I'd look at injector wiring very closely. IT seams like that's the number one install mistake.

The wires are very hard to identify. The exposed wire ends fade badly and are very hard to tell the correct color. You have to cut back several inches of insulation until the wire colors are vibrent and clear.

Post a log of it giving you trouble and Idle.
Old 06-13-2014, 12:21 PM
  #7  
Registered
 
40thanniversaryrx8's Avatar
 
Join Date: May 2010
Location: Omaha, Ne
Posts: 181
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by logalinipoo
I'd look at injector wiring very closely. IT seams like that's the number one install mistake.

The wires are very hard to identify. The exposed wire ends fade badly and are very hard to tell the correct color. You have to cut back several inches of insulation until the wire colors are vibrent and clear.

Post a log of it giving you trouble and Idle.
Thanks for the info! Unfortunately I wouldn't know where to look to check the injector wires. Also it appears that the screws for the MAF have been stripped so I can't even see if it is dirty. And I wouldn't be surprised if while in the shop the MAF was damaged during the process....i remember seeing all of the parts to my AEM intake on a cart and they looked like they were haphazardly thrown on there. And there was an incredible amount of dust in the shop so I'm wondering if maybe the inside of the intake is dusty/dirty too. I also don't know how to post a log of my idle and troubleshooting.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
xAgyex
Series I Trouble Shooting
19
11-13-2023 07:51 AM
Silver_Excalibur
Series I Tech Garage
23
06-06-2019 07:23 PM
Billy Marcial
RX-8's For Sale/Wanted
5
03-01-2018 06:50 AM
9krpmrx8
Series I Trouble Shooting
23
11-05-2015 11:45 PM
kaboshe
New Member Forum
11
07-17-2015 03:14 PM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: problems after new motor from mazda. tech says that its running rich



All times are GMT -5. The time now is 05:31 PM.