PuppyDoc

Here's my problem:

I own an 87 TII.
It starts fine cold. It doesn't like to start hot. When you try to start it hot, it smells like gas and will sometimes flood. On top of that, if you are slowing down, especially going down a hill, with the clutch in, it will stall out. I've been told that it could be the Air Temperature Intake sensor, I've also been told that it could be a faulty sensor on the cooling system, and yet another mechanic said it could be a vacuum leak. I really have no clue, and they obviously don't either. When I took it to the dealer, he had no idea, so he put the engine code reader on it, and it had no codes.
You guys seem to have a much better grasp on these types of things, any ideas?
Also, does anyone know of any RX-7 clubs in Connecticut?

bob13bt

iTrader: (9)

I also have an '87 TII thats hard to start....

Well, it was hard to start, hot or cold, and would flood easily. Then I learned to hold the pedal to the floor and crank it. This works every time. The engine hasnt flooded for a while. It wont start unless the pedal is to the floor.

Dont coast with the clutch it, simple. Downshift, and let engine braking do the work. Now, if its stalling at idle, it probably is a sensor fault or vacuum leak. Cant tell you which sensor or anything, but check for vacuum leaks.

Dont take your RX7 to any ol' mechanic. Most dont know what the **** they are looking at. They cant help you any more than we can, so do a search (at top of the page), and go to www.fc3s.org there you will find a FACTORY SERVICE MANUAL FOR FREE!!!!!!! Download that **** and buy a multimeter and badabing!!

PuppyDoc

One other problem... I get a hesitation (no, not the 3800 r.p.m. hesitation)... If I am full throttle, it hesitates at 5,000 rpm. I'm thinking my 6 port doesn't work... Any ideas?

bob13bt

iTrader: (9)

Duuuude, ALL turbo engines are 4-port (thank God). Only GSL-SE and all N/A 2nd gens have 6-port engines.

Change your fuel filter. My old GXL went from a high RPM hesitation to not being able to rev past 5500!!!! Changed the filter, BAM good as new

rico05

TII have 4 port intake, so no auxillary ports to not function. You sure it is at 5k? Hard start is most likely injectors needing to be rebuilt and the stalling I don't think could be an Intake Air Temp sensor. My n/a has been running w/o one for several weeks now, and it is just fine (except for the check engine light).

wozzoom

I'd check your AFM.

rico05

Ohhhhh yeah. Good call. I bet a cookie that is what is causong your stall out. I bet the flapper is sticking.

PuppyDoc

Yeah, the hesitation is at 5,000. I already changed the fuel filter (it was the first thing I did when I bought the car.) Doesn't the car have secondary ports that open around 5k? That's what the dude at the dealer told me. I've noticed that the hard start problem isn't happening as often as when I first bought it (I bought it for 100 bucks from my boss, he was gonna give it to charity) and I don't think he drove it that much. I am planning on getting a new engine and a turbo upgrade anyway, so will that make most of this stuff moot?

PuppyDoc

Great, now I have ANOTHER problem: My shifter gets stuck in first and second gear. Is it a shift fork, or are the bushings bad? She is very moody lately.

Aaron Cake

iTrader: (1)

OK....

First of all, there are 4 ports in a TII. There are no secondary ports that open up. There ARE secondary injectors that begin to function at around 3800 RPM under load.

Your problem sounds like either a large vacuum leak (possibly cracked TID) or dirty injectors. Specifically, the stalling is due to a vacuum leak, the hot start is due to dirty injectors...

rico05

But if he had a vac leak, wouldn't that cause it to idle poorly? Or mabye once there is increased vacuum in the TID, like under boost, it causes the leak to be worse? If that is the case, that makes sense. www.rcengineering.com for injector cleaning, BTW.

PuppyDoc

Well, sometimes it idles fine, others, you have to keep your foot on the gas to keep it from dying... I really have no idea now.

cbrock

iTrader: (1)

Have you or any previous owners replaced the vac line from the manifold to the boost sensor? If so, I'd check to make sure the boost pill is still in the line. The boost pill is a little restrictor that the sensor needs to operate. granted you'd only see a hesitation while under boost...part throttle at 5k wouldn't have this problem. Check to make sure the blow off valve hoses aren't cracked along with the turbo inlet pipe. Check your plugs too...perhaps they need changed. Lastly, let your car sit overnight with the battery unhooked to reset the computer. My talon used to give me hesitations like that, so I pulled the ol' windows 95 trick and reset it..volla no more hesitation. Don't know why it worked, it just did

Aaron Cake

iTrader: (1)

Again, check for vacuum leaks, and have injectors cleaned. Simple as that.

Also, do all standard tuneup items (all filters, plugs, wires, etc.).

dmyers

I had a similar problem with my '91 vert n/a. The idle was poor all the time, but especially when it was hot, I smelled a combination of exhaust/gas all the time and it would stall when I had the A/C on and nearly stalled with it off when I put in the clutch and put on the brakes. It turned out to be my throttle body is hosed. Here's what I checked before I found a rotary guru in my area. Checked for vacuum leak, checked air filter (ended up replacing), checked BAC Valve (plenty of info in forum for testing that), checked timing and jacked it full of fuel injector cleaner. Finally took it to a rotary guru and he checked compression, rechecked everything I had done, replaced plugs, did full tune up (since whoever serviced it before had apparently never seen a rotary) and did a correct set up and determined that my throttle body was sticking and not opening and closing correctly/consistently and that my catalytic converters had had it. The biggie as far as the idle problems though is the TB.