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

Fc RX7 won't start

Thread Tools
 
Search this Thread
 
Old Sep 12, 2016 | 07:33 PM
  #1  
gmaurer's Avatar
Thread Starter
Junior Member
 
Joined: Sep 2016
Posts: 2
Likes: 0
From: Glen Carbon Il
Fc RX7 won't start

Car will not start, has spark and fuel coming from the pump and the injectors are getting 12V. It will almost start with starter fluid but when I crank it without it seems like it isn't getting fuel. I have tried de-flooding the engine but nothing really came out of the spark plug holes even after I had cranked it a ton. Is it possible the CAS being not aligned would prevent it from being started?

The compression I did(with a regular compression tool) was 40psi on each face of the front rotor and 20psi on each face of the rear rotor. Even with bad compression it should start correct?
Reply
Old Sep 12, 2016 | 07:59 PM
  #2  
heynoman's Avatar
heynoman
Tenured Member 15 Years
iTrader: (5)
 
Joined: Jul 2009
Posts: 469
Likes: 1
From: Illinois
Wow your compression seems to be really low. That will definitely keep it from starting. You can try pouring a little MMO or 2 stroke in it to help build a little compression. But more then likely with numbers like that your engine is toast.
Reply
Old Sep 12, 2016 | 08:02 PM
  #3  
gmaurer's Avatar
Thread Starter
Junior Member
 
Joined: Sep 2016
Posts: 2
Likes: 0
From: Glen Carbon Il
Yea I've tried premix, she tries to start and almost does but then just cranks over. If the engine is toast (pretty sure it was just needed some more opinions) Ill just sell it.
Reply
Old Sep 13, 2016 | 12:36 AM
  #4  
satch's Avatar
Moderator
Tenured Member: 20 Years
iTrader: (1)
 
Joined: Jun 2005
Posts: 11,738
Likes: 16
From: tulsa,ok.
If your compression numbers are accurate then your engine is in need of a rebuild. Again, this is based on your tests being accurate.
Reply
Old Sep 18, 2016 | 10:30 AM
  #5  
SIDEWAYZE_FC's Avatar
Rotarded for life
Tenured Member 15 Years
iTrader: (1)
 
Joined: Dec 2007
Posts: 92
Likes: 0
From: Spokane WA
If your compression numbers are that low, you need rebuild/ replace engine. I had an engine that had 60 psi on front and rear rotors when using a rent-a-tool from autozone. Constantly hard to start, use a eye dropper or equivalent to get some MMO (Marvel Mystery Oil) into spark plug holes, then the engine would fire up and I could get it to idle.

Not sure what your car/rx7 experience is but there is tons of info on this forum, just can take time to search for the answer your looking for. These cars take patience or money to pay someone to take care of it's problems for you.
Been on here for years and had several rx7's, and spent countless hours reading and researching. Worth it to me, but some not so much. Love my rx7s even though ive threatened to sell them a time or two lol.
Reply
Old Sep 21, 2016 | 07:32 AM
  #6  
beeton's Avatar
Junior Member
 
Joined: Sep 2016
Posts: 24
Likes: 0
From: beeton
Obvious first is to put in fresh plugs. Even deflooding an RX will still have issues if plugs are weak and then try a tow start to take pressure from your starter. If you start it up and then find it gives the same problems when next cold, engine compression is too low and you will have more flooding woes.
My first 3 cars were gen 1 and that was always the "sell" signal for me.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
OutoftheBlue
1st Generation Specific (1979-1985)
3
Aug 29, 2016 08:01 AM
etherhuffer
1st Gen General Discussion
0
Aug 21, 2016 05:31 PM
Jsal1
General Rotary Tech Support
2
Aug 15, 2016 06:15 PM




All times are GMT -5. The time now is 11:57 PM.