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

1989 NA high rpm stumble

Thread Tools
 
Search this Thread
 
Old 10-01-07 | 10:05 AM
  #1  
groznyiv's Avatar
Thread Starter
Full Member
iTrader: (1)
 
Joined: Aug 2006
Posts: 151
Likes: 0
From: Edmond, Oklahoma
1989 NA high rpm stumble

I have a 1989 NA vert with 126000.

It smokes when you hold the idle at 4000 rpm for more than 30 seconds so I know the oil control seals are on their way out. Shifting above 5500 rpm causes a puff of smoke as well. Lately the car will not rev past ~6800 rpm and starts smoking as well. It stutters and stumbles at this rpm but will rev smoothly until then. Sometimes if you floor it it almost sounds like it is pinging. I have checked the timing and the TPS and they both seem okay. The car has RP reduced ratio pulleys on it and the timing marks are not in color. They have been set at the third pin leading and well behind the last pin trailing.
Is it possible the oil getting past the seals is causing it to "miss" at high rpm? I have new NGK plugs(~1000 miles). Could it be the jacobs ignition?

Thanks,
David

My engine mods are

Bonez cone filter intake
RB street header wrapped with heat temp tape
Bonez highflow cat
60mm HKS exhaust
Jacobs ignition box
10mm magnacor wires
Reduced ratio pulleys
New NGK plugs
Lightweight flywheel
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
rgordon1979
3rd Generation Specific (1993-2002)
40
03-15-22 12:04 PM
SakeBomb Garage
Vendor Classifieds
5
08-09-18 05:54 PM
The1Sun
New Member RX-7 Technical
5
09-15-15 04:45 PM
gxl90rx7
Haltech Forum
4
09-14-15 03:09 PM
The1Sun
1st Generation Specific (1979-1985)
0
09-07-15 10:21 PM



Quick Reply: 1989 NA high rpm stumble



All times are GMT -5. The time now is 06:06 PM.