rotory help

[racing_dave]

i have just bought a 87 mazda Rx-7 for $600, the problem is that i have no idea how to work on it, it fluters real bad, i dont know how or what to do, can you help me? (bang)

 

[PRO 5]

Flutters as in.....? At idle or while you are driving? Is there smoke coming out of the exhaust? A really good source of info on rotories is rx7club.com.

Dave

 

[ForceFed]

I would love to have an old Rx-7...but as you...I dont know how to work on a rotary either.

 

[boostisgood]

Rotary is one of the easiest engines to work on. 3 rotating parts and a few valves. The problem is getting all the s*** off the actual rotor assy.

 

[racing_dave]

it smokes about 6000 rpm and at start up, it flutters at idle or when i come to a stop

 

[Signal 2]

it smokes about 6000 rpm and at start up, it flutters at idle or when i come to a stop

I don't know alot about the FC (2nd gen. model), which is what you have. But:
Blue smoke = burning oil
White smoke (steam) = coolant = probably internal coolant seals
Black smoke = fuel = running rich = tuning/fuel issue

Check both the oil and coolant for any signs of cross-contamination.
The idle may be something minor but possible causes are too many to list.
Depending on what color of smoke, I might just start with a minor tune-up, new plugs and wires. Run some GOOD (Chevron is what I use) fuel system/injector cleaner through it.
FWIW, this site has the factory service manual available for your car.
http://iluvmyrx7.com/index.htm
Good luck

 

[racing_dave]

ok thanx

 

[Signal 2]

One other thing that comes out mind is changing out the fuel filter.

 

[Captain KRM P5]

could be a vacuum line or vacuum leak causing a strange idle. alot of rotaries smoke so thats not unusual. how does it feel power wise?

 

[racing_dave]

the power is great. ill just say when i went to grab 3rd gear i spun the tires, but when i stop at an idle it fluters between 1000 and 2500 rpm's

 

[Signal 2]

could be a vacuum line or vacuum leak causing a strange idle. alot of rotaries smoke so thats not unusual. how does it feel power wise?

(hand) Well duh.....
The Captain's right, check all your vac lines. Not sure what I was thinking, Sorry.

 

[NoRotorNoMotor]

throttle position sensor

 

[racing_dave]

ok ill check that

 

[Rotary_Beast]

definitely change the fuel filter regardless. it's a terrorist among our 7's.

 

[hey_hej]

it's the timing.....it shakes around 2000rpms and it kicks out smoke when you step on it (looks like timing problem), also see your catalic converters (the car was probably sitting for a long time before you bought it)...