666cody666

Well i was coming home from a friends place on Saturday and i was just going along and shifted in to thrid. The car sounded diffenent when i shifted, so had a chance to stop at a ligh tand the rpm's dropped to 250 and stalled! So i started the car back up and it took a little and I gave it some gas and it sounded like it was running on one rotor? Once i get back on my way i hit it and once it passed 4000rpm it has all its power? I have also notice that it idles better in the warmer air then when it rains, i dont knwo if the temp of the air has anything to do with it. After a little more driving I think it might be a ignitior?

Any ideas why i get no low-end but I get high-end?

Thanks, Cody

kgray

check for vac leaks first and make sure the fuel filter(s) are clean

666cody666

well i know the fuel filter nst it i just had the replaced... hmm i ran the car pretty low a couple of times maybe it sucked particals in tto the fitler and clogged it. and for vancum leaks i am goign to check for them probl[ey today.

hyochem

sounds like a secondary on your carb doesn't wanna open, blast it w/ carb cleaner while a freind keeps the rpm's up for a minute or two

666cody666

does anyone think it might be a weak ignitor because it sounds it running on one rotor till 3500 then boom power.

Kentetsu

Yeah, you may have lost your lead ignition...

85rotarypower

If the leading ignitor was bad it wouldn't run at all. Its either ignition related on 1 rotor (ie. plugs, wires, cap and rotor), fuel related (including vacuum leaks) on 1 rotor, or you have excess carbon buildup on one or more of the apex seals keeping them from sealing properly.

FYI, the leading ignitor controls both leading plugs, as does the leading coil. If either of these failed the car wouldn't run. A rotary won't run on trailing only.

666cody666

well i just put new cap, rotor, wires, plugs. And i know it cant be carbon because i give it some long highway run because it was lady driving for 12 years. what if the trailing is going will it cause it to do this?

FirebirdSlayer666

iTrader: (3)

Could be trailing. I've ran my FB on trailing only before when my leading coil went, it ran like **** and was hella hard to start. I'd check both coils and coil connections and check the primaries in the carb for blockage.

Kentetsu

I have to disagree with you on this one. It will run, just not well. Been there, done that.

flight_of_pain

for a quick check, switch the leading and trailing ignitors and see if your problem persists. if you need a new ignitor pm me i have a bunch for sale. and fyi it will run on trailing only, but like crap.


isaac

speedturn

iTrader: (1)

dirt clogged jets in the idle circuit of one of the primary barrels will make it run crappy at low rpm and then run great at full throttle

trochoid

iTrader: (6)

Reality check.

It WILL run on trailing only.

It will NOT run without trailing. Now you guys figure out why, LOL.

Check all of the ignition system, wiring, connections, ignitors, yada yada.

The check the fuel system, clogged primarys suggestion has merit.

85rotarypower

Hmm, this could be interesting.

What you are saying trochoid goes against what I have personally seen with my original 12A. I ran it without trailing just fine, it would not run on trailing only. And yes, I did have spark on the trailing plugs.

But more on topic, if its not ignition related is either fuel or carbon buildup.

Kentetsu

On the later year models, the trailing ignition is used to send an "okay" signal to the fuel pump. This is to ensure that the ignition is working before the fuel pump starts up for safety reasons.

However, you can switch the plug from the trailing to the leading coil so that you only need lead spark to start the fuel pump, and this is probably what happened with yours 85rotarypower.

85rotarypower

Contrary to what my username suggests, I actually have an 82 GSL.