Hi All!

I can't beleive how well organized this board is for findng information, it has been very helpful in my decision to keep and to start fixing up a 1984 gls that I got for free .

The car has the 12a? engine in it and it has a manual choke ( I haven't had a car with a manual choke on it in over 10 years!). The choke only seems to work when the key is in the ignition and turned on, is it electric -operated?

Also, and this is the biggie, the car smokes pretty bad - smells like unburnt fuel in the exhaust.

it will also only stay idling if I keep the choke slightly out and the rpms saty over 1200rpm or so. I did some checking on this board and it looks like a combination of vacuum leak(s) and maybe an out of adjustment carb.

still waiting to get some tech manuls on this car.

the previous owner said that it overheated once, from what I read this is really bad, but not sure why? if it overheats, does it need rebuilt?

One last thing, does anybody know of a Denver,Colorado (USA) RX-7 club?

Thanks alot!!!

 

Sounds like you need to adjust the carb and check all the vaccum lines...
As for the overheating, heat is a rotaries worst enemy. If you run hot then you run the risk of warping the aluminum housings and killing you engine. The car shouldnt run anymore than halfway up on the temp guage.

 

YEs choke is combination of electric and uses a sensor located behind the w/pump housing to disengage it. Sounds like your float level is off or more likely needle and seat has debris in it. Try strong cleaner like BG's 44k and flushing your tank and changing the fuel filter before you start teraing carb apart for rebuild. Yes if you overheat a rx motor it's very bad for them, they do not have regular gasket's like piston motors. They have o'rings between the rotor housings that swal and the housing warp from heat. Keep eye on temp gauge and
water level. welcome to the forum. rx7doctor

 

couple of spelliong errors this morning, have not had coffee yet

 

Cool, thanks for the fast replies...

The car is currently a disaster, the interior is shot and the engine compartment is a complete clustermess.

Since the car does start and run, and seems to have suffecient(sp?) power to drive up and down the block, do I need to worry about the story of it overheating?

I will start looking for vacuum leaks first.

 

Take it one thing at a time... first try to check and fix any vacuum leaks and then if neccessary tune the carb after that. About the smoke, most rotaries smoke a little at startup, but it should go away once the car reaches operating temp. If its black its unburnt fuel and the carb needs adjustment. Blue smoke means your burning oil, white is coolant.

 

Might need plugs too. Most of us have concluded that only NGK (BR8EQ14) should be used.

B

 

Some of these issues might fix themselves with some driving time too. The smoking might be due to poor sealing due to carbon buildup due to lack of use. Just driving it will clear most of the carbon out of the engine, and may restore compression and horsepower. How long has the car been sitting? Good luck, and welcome to the board!

 

if it starts up fine and still has decent power, it may not have been run hot enough to hurt it.

 

Thanks I was hoping to hear that.

I am a fairly decent mechanic, just not familiar with the rotory engine. from the small amount of research that I have done so far, the bit of overheating it got wasn't enough to cause any serious damage.

Now to get the leaks fixed and the carb adjusted.