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

Other than timing, what can cause a misfire?

Thread Tools
 
Search this Thread
 
Old 12-19-05, 10:30 PM
  #1  
Powered By Trochoids

Thread Starter
 
Mindspin311's Avatar
 
Join Date: Oct 2004
Location: Philly | PA
Posts: 1,457
Likes: 0
Received 0 Likes on 0 Posts
Other than timing, what can cause a misfire?

When driving, usually when under boost or when first accelerating from a stop, my car will "hiccup" a bit. Not like a major bucking or anything, but you can definately feel a momentary slight loss of power. I have a new set of plugs Im putting in Wednesday, anything else I should look at?

How can I test to make sure my coils are working well?
Old 12-20-05, 03:58 AM
  #2  
Lives on the Forum

 
RETed's Avatar
 
Join Date: Feb 2001
Location: n
Posts: 26,664
Likes: 0
Received 16 Likes on 15 Posts
bad spark plugs
bad spark plug wires
arcing spark plug wires
bad coils
bad ignition timing
too little fuel
too much fuel
bad grounds on engine
bad ECU


-Ted
Old 12-20-05, 04:10 AM
  #3  
Banned. I got OWNED!!!
 
Mombodogs's Avatar
 
Join Date: Jun 2005
Location: Vallejo, CA
Posts: 759
Likes: 0
Received 0 Likes on 0 Posts
RETed, didn't you forget the most obvious thing? TPS-plug it in! Personal experience---


PEACE THE DOG
Old 12-20-05, 10:11 AM
  #4  
Boost in..Apex seals out.

 
adrock3217's Avatar
 
Join Date: Nov 2003
Location: Maryland, 21794
Posts: 1,931
Likes: 0
Received 0 Likes on 0 Posts
If he didn't have the TPS plugged in, it would probably be idling at around 2.5-3k, so I think he would SORT OF notice.

Second, if it was the TPS, it would have problems more often then just accel from stop, or under boost. So..I'd rule that out immediately.

Listen to RETed - he owns j00.
Old 12-20-05, 10:15 AM
  #5  
Super Raterhater

iTrader: (6)
 
SonicRaT's Avatar
 
Join Date: Dec 2001
Location: NY, MA, MI, OR, TX, and now LA or AZ!
Posts: 10,624
Likes: 0
Received 2 Likes on 2 Posts
Having no TPS won't make it idle at 2.5-3k. Also, it's easy to have a dead spot in the TPS but the rest of the range be perfectly fine.
Old 12-20-05, 10:18 AM
  #6  
Seduced by the DARK SIDE

 
SureShot's Avatar
 
Join Date: Apr 2001
Location: Orange Park FL (near Jax)
Posts: 7,323
Likes: 0
Received 2 Likes on 2 Posts
Some more longshots:

Spark wires running too close to CAS wires.
TPS resistor about worn out & starting to give an erratic signal.
Loose/dirty injector plug contacts.
Old 12-20-05, 09:51 PM
  #7  
Powered By Trochoids

Thread Starter
 
Mindspin311's Avatar
 
Join Date: Oct 2004
Location: Philly | PA
Posts: 1,457
Likes: 0
Received 0 Likes on 0 Posts
how can i check my coils?
Old 12-21-05, 12:12 AM
  #8  
Y00s a h000

 
Ocelot's Avatar
 
Join Date: Jul 2003
Location: Central NJ
Posts: 1,913
Likes: 0
Received 0 Likes on 0 Posts
Do you still have the plugs in from when you got the car from me? If so, those are probably fuel fouled out the ***.
Old 12-21-05, 12:14 AM
  #9  
Y00s a h000

 
Ocelot's Avatar
 
Join Date: Jul 2003
Location: Central NJ
Posts: 1,913
Likes: 0
Received 0 Likes on 0 Posts
Oh wait, you replaced them when you mixed up those lines. That was still a long time ago, probably need some new ones. Going to get it tuned anytime?
Old 12-21-05, 12:40 AM
  #10  
Powered By Trochoids

Thread Starter
 
Mindspin311's Avatar
 
Join Date: Oct 2004
Location: Philly | PA
Posts: 1,457
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Ocelot
Oh wait, you replaced them when you mixed up those lines. That was still a long time ago, probably need some new ones. Going to get it tuned anytime?
Yea, I have the 8 month old plugs in now. Hopefully after the holidays, I will have some money to take it somewhere.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
alphawolff
1st Generation Specific (1979-1985)
17
11-17-15 05:57 PM
R7rexy
3rd Generation Specific (1993-2002)
19
09-02-15 10:24 AM
rxmiles
3rd Generation Specific (1993-2002)
9
08-24-15 02:07 PM
Wolf_
Single Turbo RX-7's
3
08-11-15 04:23 PM



Quick Reply: Other than timing, what can cause a misfire?



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