hey guys, new to the forum, just got my Rex 2 days ago, and im coming on here for some advice and to expand my rotary knowledge, so any advice u got, will be appreciated. Here's my problem, whenever the car is in gear, it Idles about 1000, then bounce to about 2000, then bounce back and forth between the two, but when its in neutral, it doesnt do it. And also, my car when im just sitting at a red light, i can hear it mis-firing and popping, have no idea what causes it, but when it runs, its running, it runs brand new, i got it from a guy who lived 4 hours away, and he drove it down to me and he had no problems, and got here fine. also it smokes as soon as i start it up, but once it warms up, the smoke dissappears, know i heard if it smokes, its time for a rebuild.. is that true or are the Rex's just oil burners like most imports.

thanks 4 your help.

 

Most cars shouldnt burn oil. If it smokes on start up there are a few things that it could be bad turbo seals or bad oil seals.

As for your idel problem that can also be many things low coolant, TPS adjusted imporperly, or even a vaccum leak.

 

I had the same problem with my idle (neutral vs. in gear). My problem was the broken spring in the clutch switch. I fixed it right up the Cheap Bastard method - spring from a ballpoint pen. Here's the link:

https://www.rx7club.com/showthread.p...=clutch+switch

 

yeh, my buddy came over today and i show'd him my new Rex and we started to check it out, i popped the hood u know, all the basics of showing off a car, and we saw smoke, i was like, oh ****, lol.. so when my dad got home we took a look at it, thank god it was only burning oil off the exhaust up by the manifold.. and we took a look at the idle sensor and we tweaked it to were it was suppose to idle at 720.. and it stopped the idle from bobbing, and popping out the exhaust, and it also quit smoking, i dont know the reason for the smoking out the exhaust. Once it runs for a while, it stops smoking, when u turn it on it smokes like a train for the first 2-3 minutes, but as u know, if u havent heard, we got snow, and its been down in the 35's here in texas. so maybe the weather has something to do w/ it. so we fixed 3 problems, in one turn of a wrench.. =) or i believe it fixed.. ill let u know later when i take it for a spin. thanks 4 the posts, ill check the spring out as well.. see if that needs to be replaced. appreciate ur post.

 

alrighty guys, here's the 411 on the idle problem, first of all, my Rex was idling way to high in the first place, around 1200, so i tuned the idle sensor and it now idles at 720, were its suppose to be. Now, b4, there was some popping, while u were in nuetral. Now, when u give it gas, Revv the engine up, it backfires.. any1 have suggestions 4 this problem.

Thanks again 4 all your guys' help!! appreciate it.

 

when it's cold or warm? smoke?

backfiring indicates that you're running rich, it's nearly as bad for a rotary as it is for a piston engine. old people & car alarms don't take to kindly to it but it's probably not a crisis.

 

Why did you start a new thread from yesterday? MERGED threads......

 

If you are going to try to deal with this yourself, you need to spend some time and energy figuring out the problem. Download the factory service manual from the sticky and read section F. Go through the symptoms and troubleshooting. Come back with questions once you've actually investigated things. We can't magically solve your problem for you over the internet.

First place to start would likely be the TPS.

 

well rynberg, last time i checked this was a forum and this is were u discussed Rex topics.. and last time i checked, this forum didnt say, OPINIONIATE YOUR SMART COMMENTS TO NEW COMMERS. And you people wonder why this forum doesnt have more people on it than it does.. lol.. b/c people like u, Mr.Knowitall.. if ur gonna post comments like that, dont view my threads, simple as that, i asked for opinions, not to magically solve my problems, yea, ill get a manual when i get a chance, i just recently bought the car, and i've been having to work, and i've had bad weather so i havent had a chance to get outside and take a look at it.. thanks anyway 4 the reply, dont post again.. MUCH APPRECIATED!!!

(thanks to all who have helped in this forum and has not stated a smartelic remark.)

 

oh nissan to answer ur question, it does smoke when a lil, not much, i think the reason it smoked b4 was the cold weather, b/c it did snow down here in texas, but it smokes when its warming up, once its warmed up, it stops smoking. so on that backfire, the oil needs to be changed?? i assume?? and another thing, when i ever i turn the car off, it backfires once again.. =/

 

If you don't realize it, rynberg is one of the moderators of this forum. Therefore, you might show a little more respect.


As for your problem, since you are new to the car; have you done the basic maintenance to start out with?

* Change spark plugs
* Examine plug wires to see if they need to be changed
* Change O2 sensor
* Air filter replacement
* Oil change and filter replacement
* Fuel filter replacement
* Coolant flush

Once you have the basics done, see if your problems still persist. If they do post back and we can see if its a serious problem (although it sounds like you bought yourself a headache).

Manuals are located here:
https://www.rx7club.com/3rd-gen-archives-73/tech-manual-directory-614824/

 

well for a moderator, he needs to be a bit more respectful for the new-comers to the site. wouldnt you thinK?? yea, it might be a headache, but for what i paid for it, its not bad, considering the guy who i bought it from drove it 4 hours w/out it breaking down, or having any problems, the only problems w/ it are little minor problems.. some TLC. but yea, i guess u could call that stuff a headache, since i cant find the problems.. yea i took a look at the tech manual. and ill do the basic check-up on it. appreciate it.

ill get back to you guys, thanks again.

 

How was I being a smart *** or disrespectful? I even gave you a suggestion for a first place to look. Here's the truth: the only way to figure out what's wrong with the car is to get out there and start troubleshooting using the service manual. Anything else is pissing into the wind, ie wasting your and our time.

So I kindly suggest you remove the chip from your shoulder. You aren't going to get along well on the forum if you're defensive and thin-skinned, or disrespectful to veteran board members.

 

There's this many people on the forum because there isn’t that many FD left in the US we aren’t talking Mustangs here.

 

well i can agree with both side's i notcied alot of cockyness but its nothing i cant handle. but wow you really flew off the handle haha, its all good lets just settle things down a bit and focus on the problem. Now i been reading alot about the idle, and i heard stock idle should be around 700-800rpm.(not in gear and in in gear) is this correct?

P.S how do you tune your idle?

 

haha well thats gonna change. RHD is comming in first FD is aloud in canada. Mine is comming in 1 week !! but dont worry i plan on becoming one of the well known Rotary specialists on here. i been taking nopte's left and right haha.

 

how will you be wasting your time, all your doing is typing on a computer?? how is that wasting time?? apparently if your on here typing, u have nothing else better to do. but anyway, there's no chip on my shoulder.. i've seen you post in other forums, WOW! your really no help as a moderator.. ur the worst moderator i've ever seen on any forum.. lol.. are you serious?? there's a problem w/ me.. and IM NOT GONNA GET ALONG W/ THE FORUM??!! HAHAHA!! i think its just your perspective on owning a RX-7. just b/c u own a RX-7 you think u can be a jerk to whom it may concern?? well i tell you what.. im only 19 and i have accomplished more than you will ever.. 19 owning a FD?? WOW!! FANTASTIC!! you dont see me running around shoving my finger in peoples faces just b/c i own one, i dont think im better than any1, wow, so u have 13,000- posts.. so u post on here a lot.. doesnt make u any better than any of us.. now lets get back to THE POINT of my thread.. PLEASE! drop it, end of case.

thanks.

 

hey element, yea, the stock idle is 720, the idle sensor as i call it.. is located up by the manifold, toward the top of the engine bay, just loosin the screw w/ a 2mm allen wrench, i believe it was, and just tighten or loosin it, then tighten it back up when u set it were u want it. thats the easiest way i can put it to you. but, yea, im having some backfire/popping problems w/ mine, i have no idea wut it is.. i think me and my dad are gonna try an change the spark plugs and ect. see if that does anything, if you guys have any other suggestions, let me know.

 

Hey man, we were all new at one time. When I first started on this forum, Rynberg kept shutting my "best oil?" threads down, and I couldn't figure out why, just figured he was a jerk. Well I found the "Search" button, and realized why... every week, someone keeps posting the same damn thing over and over and over again, and it's REALLY annoying when I'm trying to learn about new situations and keep seeing the same stupid thread about something that can be easily searched for. And that's great that you're 19 and own an FD (not sarcastic), but you can't compare yourself to someone you don't know. Rynberg is a cool guy who if you ask a question that can't be easily searched for will help you out with no questions asked and no bashing. You gotta see where we're coming from, I think you will as time goes on. But anyways, welcome to the community.

 

couldnt the pistions be messed somehow aswell/....yeah im new to board and overall car scene, but i have a certain amount of knowledge....isnt it like where if it smokes from the engine, somethings wrong with the piston or cylinder rings (worn out).....im pretty new so correct me if im wrong. tanksss.

 

idk how to answer this one... ummm... wow...

 

appreciate the welcome man, you should be a moderator, thats what moderators are suppose to do, not bash people when they ask a question. yea, my idle problem is fixed, now its popping from my exhaust when i revv my engine and let off.. =/ other than that my FD is Perfect. =)

 

well rynberg, if you would read correctly, this is an IDLE PROBLEM!! meaning, THE RPMS!!! then the exhaust was a totally different topic, and dont tell me idle, and exhaust is the same thing,b/c its not. so please, read carefully b4 shutting down threads.. thanks anyway, so its normal to pop, b/c i know i dont have a stock cat. alrighty, now for once ur being civilized, appreciate it. =)

 

oh, and i did to my troubleshooting research, those 2 web sites this forum has, dont tell about backfiring, i read up on my other problems.. and the smoke might be condensation, or it might be an oil leak.. hhmm.. never thought about that. tsk tsk tsk.

 

as far as the poping and the smoke, it should be a faint smoke and should stop smoking quickly, like after the engine warms up and, and is the popping like a backfire or just a popping sound, cuz if its just the sound then it might just be the fiberglass packing being blown out on a new exhaust, thats normal and will stop after awhile, hope that helps...