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

Car is running terribly lean, what could be the cause?

Thread Tools
 
Search this Thread
 
Old Jul 27, 2008 | 06:44 PM
  #1  
Mindspin311's Avatar
Thread Starter
Powered By Trochoids
Tenured Member 05 Years
 
Joined: Oct 2004
Posts: 1,457
Likes: 0
From: Philly | PA
Car is running terribly lean, what could be the cause?

Injectors, fuel pump, fuel filter, FPR are my only guesses as to why the car is running so bad.

The WB02 gauge was registering no higher than 16:1 when I limped it home from a friends house. Nothing change when it got into boost, so I quickly backed off. Car drove absolutely fine yesterday.

FPR maybe? I feel like if it were primary injectors, things would get better once the secondary set came online. Would a all of a sudden clogged fuel filter be an issue?

The car idled fine, its once it got under load that it ran like crap.
Reply
Old Jul 27, 2008 | 07:08 PM
  #2  
sharingan 19's Avatar
Rotary Revolutionary
Tenured Member 15 Years
iTrader: (16)
 
Joined: May 2006
Posts: 3,881
Likes: 3
From: Jacksonville, Tampa & Tallahassee
A clogged filter could cause this, and is pretty simple to diagnose, make sure you check the sock on the fuel pump as well as inspect/replace the filter in the engine bay.

Or.....what happened to me was the line that connects the fuel pump to the hard lines had developed a crack, and was leaking fuel. It would start up fine, but as soon as u tried to increase the load, it would go leaner and leaner until it died.
Reply
Old Jul 27, 2008 | 07:16 PM
  #3  
Mindspin311's Avatar
Thread Starter
Powered By Trochoids
Tenured Member 05 Years
 
Joined: Oct 2004
Posts: 1,457
Likes: 0
From: Philly | PA
I just pulled the TMIC off, FPR line is fine. Also, I didnt notice an vac leaks.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
Jul 1, 2023 04:40 PM
Marty RE
Introduce yourself
3
Aug 29, 2015 07:51 AM
smikels
2nd Generation Specific (1986-1992)
3
Aug 18, 2015 01:26 PM
ashleymiche
Introduce yourself
0
Aug 14, 2015 12:59 PM
baconflavored
SE RX-7 Forum
0
Aug 12, 2015 12:07 AM




All times are GMT -5. The time now is 09:16 AM.