Why can't I get my RX7 to run?

Tiny
CWHILL
  • MEMBER
  • 1980 MAZDA RX7
  • 100,000 MILES
I have rebuilt my 1980 rx7 carb, followed all the diagrams, cleaned and soaked all the parts, jets, etc. I am getting good fuel into the carb, the engine turns but won't start. I can hear that the car wants to start but it just won't fire. I have also replaced everything else, ie. Spark plugs, wires, distributor, thermostat, ect. I replaced the accelerator pump diaphragm and still nothing. What do you think? Oh, it did start once, the first time I reinstalled the carb, but since then nothing.

Friday, May 18th, 2012 AT 5:24 PM

4 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Is this what it was doing before carb rebuild?
Was this
answer
helpful?
Yes
No
Friday, May 18th, 2012 AT 6:59 PM
Tiny
CWHILL
  • MEMBER
  • 6 POSTS
Sort of, when I bought the car it had a 1981, 82, or 83 carb on it, and the owner gave me the 1980 original carb that was on the car before he changed it. The car started with a great deal of effort but would not drive over 30 mph, I rebuilt the carb by soaking the parts and rebuilding it, then the car would go about 65 mph, but have no acceleration from 0 to 35. I then rebuilt the 1980 carb followed all the direction, pictures, manuals, vacuum diagrams, etc, etc. I started the car with no problem right after I re-installed the 1980 carb, then it died and won't restart. So to answer your question, yes it did this before. I am afraid there was some bad gas. I have also replaced all the in line fuel filters, spark plugs, wires, fluids, thermostat, 2 ignition control modules, and all the brakes.
Was this
answer
helpful?
Yes
No
Friday, May 18th, 2012 AT 10:27 PM
Tiny
CWHILL
  • MEMBER
  • 6 POSTS
Here are some images
Was this
answer
helpful?
Yes
No
Friday, May 18th, 2012 AT 11:04 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Check that there is actually fuel in the carby, with air cleaner off check that fuel is spraying when you open throttle.
Was this
answer
helpful?
Yes
No
Saturday, May 19th, 2012 AT 9:33 AM

Please login or register to post a reply.

Sponsored links