when i gun my 85 base model RX-7 at times the secondaries will not work. and when they work it feels like a boost of power and then if i push the clutch the RPMs shoot up. they only way it stops is with me turning off my car. please help with why thanks

 

I had the same problem.

I ran a carb/injector cleaner through the setup, it helped a bunch.

BUT, oddly enough, what fixed it, was the installation of an aftermarked full exhaust system.

I'm not sure if something was just bumped during the installation, removed, or just less restriction fixed it.

I totally hear you tho. Its really annoying eh.

Usually upshifting (4th to 3rd, etc) stopped it for mine, but one time, i just got so pissed, i floored it, and then just kept downshifting. I heard some massive backfiring, and then slowed the car way down, it kept backfiring, so i let the car sit for a bit. It helped. Problem still persisted until exhaust system.

 

i have an aftermarket exhaust system and still keeps up.
the only thing im missing for full exhaust is my racing beat headers.
but yeah it is a pain in the butt
and it is when i downshift from 4th or 5th to third that it does it

 

Hmmmmmm.

You got me. I searched for the longest time for the fix to this. Nobody ever really helped me. People said a lot of stuff, but never really anything that helped. (previous message boards).

Perhaps try carb cleaner spray from schucks or something. Go there and read the instructions on it, that may be what you need.

Good luck man, let me know if you finally fix it. I stopped worrying about mine when the problem magically dissapieared.

 

dude i would love for mine to magiclly dissapier!!!!!!!!!
carb cleaner never worked eather i cleaned the primaries and the secondaries and all the linkage my carblooks almost new but still no luck thanx IoTus

 

This happend to me and it turned out to be something in the vacumm setup so i made mech secondaries and the problem dissapeared. If you wanna try that read sterling carb mood in the archives it is pretty simple and then they should not lock open man that **** is crazy when they lock open.

jr

 

Search! This has been covered several times before.

 

ok i fixed my carb problem

i removed the rats nest and problem solved

i also solved the problem of backfires between shifts and downshifts

thanx for all the help guys

Mike

 

What did you do to fix your problem? Besdies taking the carb out. Mine was rebuilt and we cant get it to run well.