ive got a 1987 rx7 N/A with the 3688 rpm hesitation. this is obviously a recurrent problem, but i havent found any advice other than telling me to reground everything. i changed the plugs, wires, and the two fuel injectors that were easy to get to (just had to take off the intake tube and fuel rail), and ive run two bottles of fuel system cleaner through, and it hasnt helped. i read the thing under 'frequently asked questions' that said to reground everything in the engine, but i dont know where the ground wires are. if anyone knows what i should do, please help!!

 

Click on photo for help....

 

Why did you start a new thread?

read these
https://www.rx7club.com/2nd-gen-archive-72/grounding-how-thorough-discriptive-199558/

https://www.rx7club.com/2nd-gen-archive-72/super-grounding-256429/

Also make sure your aux actuators are working correctly.

RTFM

 

If he knew about those thread, Im sure he wouldn't start this thread.
Anyway, Im sure you know that now.
Check FAQ / archive & use the search button also.
I know it's alot of readin' and diggin'
I read somewhere about 2ndary inj ground/ecu/and some boost senor to the water pump..cars after 86 or something.. hmm i can't recall....