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

my fb won't start!

Thread Tools
 
Search this Thread
 
Old 04-08-14, 09:42 AM
  #1  
Junior Member
Thread Starter
 
82roxanne's Avatar
 
Join Date: Apr 2014
Location: Ontario, CA
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
my fb won't start!

Okay I have an 82 fb series 2.. a little background, I drove her up this mountain road and she didn't overheat or give me trouble all was fine..I even turned off and started back up several times while I was up there sight seeing. The problem started the following day it was having trouble getting started as usual but this time didn't start only kept cranking..I know the gas is getting there I can smell it, so started by pulling off the wires from ignition coils, one had spark and one didn't..of course I did one at a time.. So I thought okay only one is bad that should be my problem..wrong! I bought both new and charged my battery it's an optima btw, and still nothing just cranks and kinda wants to start but doesn't.. Could the drive up the mountain have anything to do with it? Altitude change and what not.. I'm going to check my wires and dizzy etc. Don't think anything could be bad since this happened over night and that's why I'm lost..any thoughts on this? ..
Old 04-08-14, 01:31 PM
  #2  
'85 12a
iTrader: (10)
 
Cookboy's Avatar
 
Join Date: Jun 2012
Location: Richmond VA
Posts: 1,495
Likes: 0
Received 2 Likes on 2 Posts
I'm guessing it was the leading coil that was bad. If so, it was the leading ignitor. Try swapping the ignitors and see what you get. I think you need a new one.
Old 04-08-14, 02:17 PM
  #3  
Junior Member
Thread Starter
 
82roxanne's Avatar
 
Join Date: Apr 2014
Location: Ontario, CA
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Cookboy
I'm guessing it was the leading coil that was bad. If so, it was the leading ignitor. Try swapping the ignitors and see what you get. I think you need a new one.
I was only going to check if they were bad so thanks I'll try that and let you know what happens!
Old 04-08-14, 04:20 PM
  #4  
Junior Member
Thread Starter
 
82roxanne's Avatar
 
Join Date: Apr 2014
Location: Ontario, CA
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
Okay so I swapped the igniters and no difference..could both have gone bad?
Old 04-08-14, 05:44 PM
  #5  
Junior Member
Thread Starter
 
82roxanne's Avatar
 
Join Date: Apr 2014
Location: Ontario, CA
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
Okay so I did some more looking around and i was wrong about the coils the new ones have same resistance as old ones..also checked the pick up coils and they check out. Only thing I can think of is the igniters but don't know how to test with my DMM..I will replace the cap and rotor also as the rotor and inside of cap look pretty bad.
Old 04-09-14, 08:46 AM
  #6  
Junior Member
Thread Starter
 
82roxanne's Avatar
 
Join Date: Apr 2014
Location: Ontario, CA
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
Little update, got my ignitors checked out turns out one of them is bad so ordered one off eBay hopefully I'm not getting a crap ignition module..
Old 04-15-14, 08:35 AM
  #7  
Junior Member
Thread Starter
 
82roxanne's Avatar
 
Join Date: Apr 2014
Location: Ontario, CA
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Cookboy
I'm guessing it was the leading coil that was bad. If so, it was the leading ignitor. Try swapping the ignitors and see what you get. I think you need a new one.
Hey so I replaced the bad ignitor and still won't start 😥 ..any ideas what could be wrong? Is there like a relay that could cause this?
Old 04-15-14, 02:43 PM
  #8  
'85 12a
iTrader: (10)
 
Cookboy's Avatar
 
Join Date: Jun 2012
Location: Richmond VA
Posts: 1,495
Likes: 0
Received 2 Likes on 2 Posts
Can you check to see if you have spark?
Old 04-15-14, 10:12 PM
  #9  
Junior Member
Thread Starter
 
82roxanne's Avatar
 
Join Date: Apr 2014
Location: Ontario, CA
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Cookboy
Can you check to see if you have spark?
Yeah I have spark, today I had my battery fully charged before going to start it again and it discharged from all the cranking..I didn't crank it for long either but several times and It felt like it was about to run but it just wouldn't start.. I'm thinking I might have a fuel/air problem but don't know where to start, I smell gas and the choke works so maybe a weak spark? I'll try again tomorrow and check that I have spark going to all four plugs.
Old 04-16-14, 06:35 AM
  #10  
'85 12a
iTrader: (10)
 
Cookboy's Avatar
 
Join Date: Jun 2012
Location: Richmond VA
Posts: 1,495
Likes: 0
Received 2 Likes on 2 Posts
Spray some starting fluid in the carb next attempt. Sometimes that'll getcha going.
Old 04-16-14, 12:56 PM
  #11  
Junior Member
Thread Starter
 
82roxanne's Avatar
 
Join Date: Apr 2014
Location: Ontario, CA
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Cookboy
Spray some starting fluid in the carb next attempt. Sometimes that'll getcha going.
I've tried that but didn't do much, I'm leaning more towards spark now can't wait to get home and figure this out!
Old 04-22-14, 01:45 PM
  #12  
Junior Member
Thread Starter
 
82roxanne's Avatar
 
Join Date: Apr 2014
Location: Ontario, CA
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
In case you fellas were wondering I did get my 7 running again i swapped the bad ignitor for a new one and changed the cap rotor plugs and wires and that did it! One thing I saw was that the old plugs were drowned in oil, could there be a leak inside the engine?
Old 04-22-14, 06:33 PM
  #13  
'85 12a
iTrader: (10)
 
Cookboy's Avatar
 
Join Date: Jun 2012
Location: Richmond VA
Posts: 1,495
Likes: 0
Received 2 Likes on 2 Posts
I'm glad you got it going! As to the oily plugs, could be. Drive a while and check em. Let us know.
Old 04-22-14, 09:58 PM
  #14  
Junior Member
Thread Starter
 
82roxanne's Avatar
 
Join Date: Apr 2014
Location: Ontario, CA
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Cookboy
I'm glad you got it going! As to the oily plugs, could be. Drive a while and check em. Let us know.
Yeah I was too as soon as I heard that beautiful purr from the rb exhaust 😀 ..and yeah I sure will I'll post again when I check them. Thanks again for the help 👍
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
1993fd3sracer1
3rd Generation Specific (1993-2002)
29
10-13-15 01:57 PM
1993fd3sracer1
1st Generation Specific (1979-1985)
20
09-07-15 11:50 AM
Im faster
General Rotary Tech Support
4
08-19-15 02:57 PM



Quick Reply: my fb won't start!



All times are GMT -5. The time now is 03:32 PM.