2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

90 vert will not run to red line

Thread Tools
 
Search this Thread
 
Old 10-18-07, 08:19 AM
  #1  
Junior Member

Thread Starter
iTrader: (1)
 
The Milo's Avatar
 
Join Date: Dec 2005
Location: Tulsa Ok
Posts: 36
Likes: 0
Received 0 Likes on 0 Posts
90 vert will not run to red line

I have a 90 vert that I rebuilt. The engine runs fine and can be reved to over 8000 rpms with out a load. But when I am driving the car it will not go above 6000 rpms. I had the infectors cleaned and tested before I put them back into the car durning the rebuild. So I do not think that the injectors are the problem. I really want the additional 2000 rpms back.
Old 10-18-07, 08:25 AM
  #2  
Black 1989 Convert.

iTrader: (1)
 
JasonDowney's Avatar
 
Join Date: Jul 2006
Location: Downingtown, PA
Posts: 232
Likes: 0
Received 0 Likes on 0 Posts
I had the same exact problem with my vert. Never solved it since i just took apart the engine to turbo it, but I saw a few things that could have caused it. First off, the plastic piece which directs the flow of the injectors was put on in the wrong direction. Another thing I noticed was that there was a restriction in the exhaust. I tried using an safc to see if tuning was the problem, but it never solved it. Up to around 5k it would rev normally and then the power would just drop off drastically.
Old 10-18-07, 08:52 AM
  #3  
Rotary Enthusiast

iTrader: (31)
 
HAI-TEK7's Avatar
 
Join Date: Aug 2003
Location: Lancaster, Pa
Posts: 1,251
Likes: 0
Received 1 Like on 1 Post
Did you check your aux ports?
Old 10-18-07, 11:08 AM
  #4  
FD Daily

iTrader: (26)
 
K-Tune's Avatar
 
Join Date: Jul 2003
Location: Gulf Breeze, FL
Posts: 3,308
Likes: 0
Received 13 Likes on 13 Posts
also replace the fuel filter if you havnt already.
Old 10-18-07, 11:29 AM
  #5  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,849
Received 2,613 Likes on 1,852 Posts
1. do all the aux ports WORK? VDI? most are stuck shut... no vdi = no power after 5k

2. since its a new engine, is the cas in right? timing?

3. any codes? check it

4. cat/exhaust could be plugged, but it would have been plugged before the motor...
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
josef 91 vert
2nd Generation Specific (1986-1992)
23
09-03-15 11:20 AM
Frisky Arab
2nd Generation Specific (1986-1992)
13
08-18-15 05:30 PM



Quick Reply: 90 vert will not run to red line



All times are GMT -5. The time now is 08:36 PM.