Ok I just got a 88 non turbo rx7. Great looking car. I took something off that looks like a air pump. Thought it might affect the idle prob it was having. It was sounding like a drag car camming lol. The air pump was there but no belt on it. I have heard this could make it run rich. I hope someone can help me with it. Its is some times hard to start and smokes real bad right after starts. Do these cars have timing? LoL Sorry I am knew to the rotary life. I'm just wondering what to do.

 

yes the have timing https://www.rx7club.com/2nd-generation-specific-1986-1992-17/timing-728705/
and as for the air pump im pretty new to that but im pretty sure it will make it run rich but someone else im sure will correct me on that haha

 

lol you are very wrong. the air pump has nothing to do the idle or any of the combustion process. from the limited info it sound like you might need to adjust your TPS. do some searches.

 

I'm thinking the main prob is its about to hit 200k on the motor ^.^. I'm wondering if the ecu is moded there no rev limiter. So will taking that pump off hurt anything? And would that idle prob be the fuel pump?

 

haha ya i just looked up that whole air pump thing scan through the fc facts section it covers idle and dudes right its probably your tps

 

https://www.rx7club.com/forum/showth...hreadid=112251

ya taking the air pump off isnt a problem that link should explain

 

TPS? lol? now if u would have said vtech i would have understood LOL

 

TPS throttle postion senser http://www.teamfc3s.org/info/articles/idle.html

 

Wow this engine is different from others

 

haha ya but once you learn it it is better well to me anyways it being differant is one of the reasons i like it haha

 

is the tps the screw on the throttle body?

 

ive been wanting to mess with that anyway LOL

 

yes basically look where the butterfly valve in the trottle body there will be a sencor right there it works by creating a specific voltage by how far the valve is open or closed

 

Cool thanks so much. Not sure where to post this but i found a good site to look up stuff for rx7s on http://mazdarx7.iougs.com/index.shtml

 

thats cool and all but like i had mentioned earlier the FAQ section has everything https://www.rx7club.com/2nd-generation-specific-1986-1992-17/frequently-asked-questions-2nd-generation-rx-7-faq-fc-494667/
plus you have alot of people here that know what they are talking about when it comes to mods and other things not normally covered in tech sites

 

Ok i turned the screw it seems to rev higher the further i turn it not sure if that is safe or not. that site mentioned a lamp tool do i need that or is there a trick i can use. I heard on these cars there is certain tricks that can be done. its also running really really rich lol.

 

http://www.banzai-racing.com/products_tps_tester.htm
i had to do some research on the tps tester but i think this is what your talking bout

 

thanks again. man im starting to wondering if working on this car is worth it? i mean it does have almost 200k on the car or do these run forever?

 

if you look like anywhere on this forum itll say that 200000 is about the limit that being said you can find replacement engines for pretty cheap and rebuild kits pretty cheap to i believe at pineappleracing.com is where you can get the rebuilds and there are so many treads and links pages videos on how to rebuild them pretty simple and fun to do

 

 

kk cool they guy i bought it from said it had been rebuilt but not sure on how to tell

 

get it compresstion tested on both rotors check plugs wires fuel delivery all the normal chit see what you come up with

 

kk the plugs look new and i can see where maybe it looks like where was some new stuff added. like a liquid gasket showing so he might have right now im ordering a stage 1 performance clutch looks like it has a throttle body spacer, duel exhaust and i think the ecu has been moded there isn't a rev limiter. im looking for a cheap short shift

 

i think its mazdatrix.com that has a decent short shift

 

thanks i hope i hope i can get a used one off someone money is running kinda low