Hey guys i have a 88 N/A GXL
I didnt drive the car for about 2 days and i got this wierd hesitation from 4500- 6000 rpm , its like its choking the thing is im running autolike cheap plugs for trailing since i havent had enough time to pick up my new plugs from napa, it goes away then comes back , runs fine for a min or so then comes back what could it be, could it be the filter or the plugs?, or could it be something worse ?

 

oh and i recently installed one of those ractive cone filters, im running 87 octane gas , it doesnt seem to be a mechanical problem since it goes away and doesnt happen at low rpms . any ideas?

 

try the plugs just to get it out of the way, the cancellation method bro, try everything and cancel out each possibilty.

 

yeah im gonna do that today, its so wierd how it just appears and then doesnt though, that would probably cancle out the engine right? seems like a electrical or fuel issue to me

 

might also be a vaccuum line, chek em bro

 

alright, which vacum lines should i start looking at?
im going to change my fuel filter tonight and put good plugs on too

 

Problem seems to have fixed, i replaced those crappy autolite plugs with used NGK BUR9EQ from pick n pull , already runs better. Im going to go and replace my fuel filter sometime this week also, now my question is can crappy spark plugs really do that?

 

anyone ever experienced that from spark plugs??

 

yep. most of us do.

 

thats wierd, also i noticed now it slightly happens when i floor it at above 4k rpm , when i let go just a bit it goes away , could this be because of my leaky injectors?

 

bump?

 

nobody knows?

 

adjust your TPS, that has a big factor too. search in the 2nd gen on how to adjust it. that'll probably solve 89% of your hesitation problems. if all else fails, clean all your ground wires. this has been covered A LOT of times.

 

really, i didnt know it was covered before , sorry
ill check how to adjust that if that doesnt help im gonna get a set of injectors cleaned and tested then put them in

 

oh btw how can i check if my exhaust if plugged and that my 5th and 6th ports are opening

 

okay im gonna be checking my ports tonight, i was playing with it today in the garage and i noticed every time i manually move the (forgot what its called the little spring that controls the rpm) with my finger it hesitates for a second , then jumps up is this normal , when i do it all the way it seems like its gonna die but it never does?

 

alot of your ?'s are answered here: https://www.rx7club.com/2nd-generation-specific-1986-1992-17/frequently-asked-questions-2nd-generation-rx-7-faq-fc-494667/

 

ive looked through the faq's and i cant seem to find anything specific about my problem because i cant find anything for hesitation while driving, or full throttle

 

heres one: http://www.aaroncake.net/RX-7/tech1.htm

http://www.aaroncake.net/RX-7/6porttest.htm

 

thanks , my fault for not seeing that, would the TPS be in fault for hesitating while playing with the throttle?