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 FC won’t even crank I can’t figure it out

Thread Tools
 
Search this Thread
 
Old 06-30-21, 07:12 PM
  #1  
Junior Member
Thread Starter
 
Escos_FC's Avatar
 
Join Date: Jun 2021
Location: Texas
Posts: 15
Received 0 Likes on 0 Posts
My FC won’t even crank I can’t figure it out

So I’ve recently bought a FC it won’t crank or turn over. I don’t know the condition of the starter could it be that or the fuel pump?

The previous owner stated the engine wasn’t getting fuel he also stated there is a blown fuse. This is my first every rotary engine please help me.
Old 06-30-21, 11:18 PM
  #2  
Moderator

iTrader: (2)
 
rxtasy3's Avatar
 
Join Date: Jun 2002
Location: Spartanburg, SC
Posts: 9,328
Likes: 0
Received 258 Likes on 239 Posts
moved post. please post in the correct sections.

fuel pump has nothing to do with whether or not the starter runs to crank the engine. check for good battery. clean and tight terminal connections at the battery. good grounds is a must. there's a single wire spade connector going to the starter solenoid. it should have +12v with the key in the start position. u can take a screw driver and short between that terminal connection and where the pos batt cable attaches to the starter and it should make the starter run if it's good.
The following users liked this post:
Escos_FC (07-04-21)
Old 07-01-21, 09:57 PM
  #3  
Junior Member
 
Gehmabandon's Avatar
 
Join Date: Jun 2021
Location: SE Pennsylvania
Posts: 35
Received 7 Likes on 6 Posts
Do you hear a click when you turn the key to ignition? You should definitely take the starter to an auto parts store that will test it for free; AutoZone will do this for you. If you have a good starter and don't hear anything when turning the key (assuming your battery is good), I would say there is a wiring issue.
The following users liked this post:
Escos_FC (07-04-21)
Old 07-01-21, 10:00 PM
  #4  
Junior Member
 
Gehmabandon's Avatar
 
Join Date: Jun 2021
Location: SE Pennsylvania
Posts: 35
Received 7 Likes on 6 Posts
Originally Posted by Escos_FC
The previous owner stated the engine wasn’t getting fuel he also stated there is a blown fuse. This is my first every rotary engine please help me.
I will mention too that none of this has anything to do with it being a rotary. But a blown fuse would explain why your starter isn't engaging. check all your fuses with a volt meter set on continuity (Ω), and if you get no reading (0L), the fuse is blown and you will have to install a new one.
The following users liked this post:
Escos_FC (07-04-21)
Old 07-04-21, 05:43 PM
  #5  
Junior Member
Thread Starter
 
Escos_FC's Avatar
 
Join Date: Jun 2021
Location: Texas
Posts: 15
Received 0 Likes on 0 Posts
Originally Posted by Gehmabandon
Do you hear a click when you turn the key to ignition? You should definitely take the starter to an auto parts store that will test it for free; AutoZone will do this for you. If you have a good starter and don't hear anything when turning the key (assuming your battery is good), I would say there is a wiring issue.
Yeah the owner stated it had a wiring issue I appreciate the response and I will get it tested
Old 07-04-21, 05:46 PM
  #6  
Junior Member
Thread Starter
 
Escos_FC's Avatar
 
Join Date: Jun 2021
Location: Texas
Posts: 15
Received 0 Likes on 0 Posts
Originally Posted by rxtasy3
moved post. please post in the correct sections.

fuel pump has nothing to do with whether or not the starter runs to crank the engine. check for good battery. clean and tight terminal connections at the battery. good grounds is a must. there's a single wire spade connector going to the starter solenoid. it should have +12v with the key in the start position. u can take a screw driver and short between that terminal connection and where the pos batt cable attaches to the starter and it should make the starter run if it's good.
Sorry for posting in the wrong area, I have no idea how this works anyways thanks for the feedback. I’m just not good with wires by chance do you have a visual diagram
Old 07-05-21, 12:37 AM
  #7  
Moderator

iTrader: (2)
 
rxtasy3's Avatar
 
Join Date: Jun 2002
Location: Spartanburg, SC
Posts: 9,328
Likes: 0
Received 258 Likes on 239 Posts
wiring diagrams and manuals can be downloaded from here

Foxed.ca - Mazda RX-7 Manuals
Old 05-09-24, 01:46 PM
  #8  
Newbie
 
TastefulGuacFC3S's Avatar
 
Join Date: May 2024
Location: FORT CAMPBELL BABY!!!
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Help

Originally Posted by Gehmabandon
Do you hear a click when you turn the key to ignition? You should definitely take the starter to an auto parts store that will test it for free; AutoZone will do this for you. If you have a good starter and don't hear anything when turning the key (assuming your battery is good), I would say there is a wiring issue.
Im having that exact issue. I had moved my car literally 50 feet and when i went to turn the key the starter would just click. My initial thought was bad starter so i got a new one and replaced it and same deal. When i turn the key it clicks and when i release it clicks again. I even stole a battery from my buddies car and it made no difference. Any help would be beyond helpful.
Old 05-09-24, 09:17 PM
  #9  
Moderator

iTrader: (3)
 
diabolical1's Avatar
 
Join Date: Feb 2002
Location: FL
Posts: 10,831
Received 307 Likes on 268 Posts
welcome to the board.

are you sure your terminals and the connections at the starter are clean and tight enough? also look into your ground cable since it is attached to starter bolt.
Old 05-11-24, 12:46 PM
  #10  
Newbie
 
TastefulGuacFC3S's Avatar
 
Join Date: May 2024
Location: FORT CAMPBELL BABY!!!
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by diabolical1
welcome to the board.

are you sure your terminals and the connections at the starter are clean and tight enough? also look into your ground cable since it is attached to starter bolt.
Yeah i went through and made sure all connectors and grounds were seated properly and not corroded. And i still cant figure out whats going on.
Old 05-11-24, 02:12 PM
  #11  
Moderator

iTrader: (3)
 
diabolical1's Avatar
 
Join Date: Feb 2002
Location: FL
Posts: 10,831
Received 307 Likes on 268 Posts
well, if everything is fine at the connections and the battery is good, then the next thing i would look at is the relay. try bypassing the relay and see if it will crank the engine then.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Escos_FC
2nd Gen General Discussion
3
09-10-21 10:53 AM
AlexRX7fc
General Rotary Tech Support
1
08-24-14 08:25 PM
7lies.
New Member RX-7 Technical
7
03-27-09 10:27 PM
Torch101
2nd Generation Specific (1986-1992)
4
12-04-05 10:28 PM



Quick Reply: My FC won’t even crank I can’t figure it out



All times are GMT -5. The time now is 04:07 PM.