RX7Club.com - Mazda RX7 Forum

New Member RX-7 Technical Post your first technical questions here, in an easy flame free environment, before jumping into the main technical sections.

rough idling

Thread Tools
 
Search this Thread
 
Old 09-14-09, 05:08 PM
  #1  
somethin catchy
Thread Starter
 
squatches's Avatar
 
Join Date: Sep 2009
Location: habersham, ga
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
rough idling
what would cause my car to idle rough? when first crunk it surges all the way up to 6 or 7 thousnd rpms and then drops down way past one and then dies
squatches is offline  
Reply Like
Old 09-14-09, 05:28 PM
  #2  
Top Down, Boost Up

iTrader: (7)
 
RotaryRocket88's Avatar
 
Join Date: Mar 2008
Location: San Diego, CA
Posts: 8,718
Likes: 0
Received 6 Likes on 4 Posts
Post year/model info.
RotaryRocket88 is offline  
Reply Like
Old 09-14-09, 05:34 PM
  #3  
somethin catchy
Thread Starter
 
squatches's Avatar
 
Join Date: Sep 2009
Location: habersham, ga
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
86 fc nonturbo
squatches is offline  
Reply Like
Old 09-14-09, 07:45 PM
  #4  
Junior Member
iTrader: (1)
 
steldez's Avatar
 
Join Date: Jun 2009
Location: rosamond, california
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by squatches
what would cause my car to idle rough? when first crunk it surges all the way up to 6 or 7 thousnd rpms and then drops down way past one and then dies
my car does this too sometimes but all i do is give it a rev and it doesn't die..
i have a 88 rx7 vert by the way
steldez is offline  
Reply Like
Old 09-14-09, 07:51 PM
  #5  
somethin catchy
Thread Starter
 
squatches's Avatar
 
Join Date: Sep 2009
Location: habersham, ga
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
ive tried that if you rev it it automatically kills it i thought it might be bad gas but ive drained all old from tank and lines but still the same thing
squatches is offline  
Reply Like
Old 09-14-09, 09:06 PM
  #6  
Junior Member

 
dustin.rpk's Avatar
 
Join Date: Sep 2009
Location: Missouri
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
the 88 i am looking at does the same thing, only it dies immediately on trying to rely on idle, it runs fine just pops and sputters when it gets around 1k. i was told compression could cause it
dustin.rpk is offline  
Reply Like
Old 09-15-09, 01:09 PM
  #7  
somethin catchy
Thread Starter
 
squatches's Avatar
 
Join Date: Sep 2009
Location: habersham, ga
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
it doesnt do it every time its ran it only does it about one out of five times being drove or ran other than that one time it runs great
squatches is offline  
Reply Like

Trending Topics

Old 09-17-09, 07:07 PM
  #8  
More money=more power/fun
 
Chef-j's Avatar
 
Join Date: Sep 2009
Location: TX/MI/NY/S.korea
Posts: 56
Likes: 0
Received 0 Likes on 0 Posts
maybe leak? or TB? not enough air? Have you find a problem?
Chef-j is offline  
Reply Like
Old 09-17-09, 07:13 PM
  #9  
somethin catchy
Thread Starter
 
squatches's Avatar
 
Join Date: Sep 2009
Location: habersham, ga
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
no not really i have no clue its still sitting in the building until i can figure out what it is
squatches is offline  
Reply Like
Old 09-17-09, 07:36 PM
  #10  
More money=more power/fun
 
Chef-j's Avatar
 
Join Date: Sep 2009
Location: TX/MI/NY/S.korea
Posts: 56
Likes: 0
Received 0 Likes on 0 Posts
Try leak test, check TB, voltage and wires. what ems you runing? running a TP?
Last edited by Chef-j; 09-17-09 at 07:49 PM.
Chef-j is offline  
Reply Like
Old 09-19-09, 06:28 PM
  #11  
somethin catchy
Thread Starter
 
squatches's Avatar
 
Join Date: Sep 2009
Location: habersham, ga
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
havent ran a leak test but i will try it and stock ems and no
squatches is offline  
Reply Like
Old 09-19-09, 08:55 PM
  #12  
More money=more power/fun
 
Chef-j's Avatar
 
Join Date: Sep 2009
Location: TX/MI/NY/S.korea
Posts: 56
Likes: 0
Received 0 Likes on 0 Posts
Then i'm assume you are running cats? i would also check the core.
Chef-j is offline  
Reply Like
Old 09-19-09, 11:58 PM
  #13  
somethin catchy
Thread Starter
 
squatches's Avatar
 
Join Date: Sep 2009
Location: habersham, ga
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
ok ill check that to thanks
squatches is offline  
Reply Like
Old 09-20-09, 07:07 PM
  #14  
Full Member
 
vipcivic's Avatar
 
Join Date: Jul 2009
Location: chitown
Posts: 62
Likes: 0
Received 0 Likes on 0 Posts
check for vacuum leaks,
vipcivic is offline  
Reply Like
Old 09-20-09, 07:57 PM
  #15  
somethin catchy
Thread Starter
 
squatches's Avatar
 
Join Date: Sep 2009
Location: habersham, ga
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
tryed that far as i can tell none
squatches is offline  
Reply Like
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Variable resistor broken ?
kuuva86
2nd Generation Specific (1986-1992)
2
09-28-15 05:42 AM
Car wont run right
Jmolina0163
1st Generation Specific (1979-1985)
19
09-25-15 06:06 PM
Idle problem
firzen
2nd Generation Specific (1986-1992)
9
09-15-15 12:04 PM
85 gs not holding idle all of a sudden
RotaryBobby
1st Generation Specific (1979-1985)
1
09-10-15 01:33 PM
Tags
Back to Subforum
New Member RX-7 Technical
View Next Unread
spoiler or no spoiler?




Advanced Search
Quick Reply: rough idling


Reply Closed Thread Share

All times are GMT -5. The time now is 05:11 AM.