mightymouse0x

hey, i just got my motor dropped in, and it runs, but when i start it, it smokes mad amounts of white gray smoke out the exhaust. but once i start driving it around for a little bit, it stops. is it cause the cat isnt within operating temps yet? it had some real old gas, half a tank, and i poured that berrymans b-12 chem stuff in it, and the other half with 2 cycle super premium premix. it it just white smoke cause of the gas? or what?

MaxRX7

maybe you blew your headgasket

j/k

RETed

Wait till you're running nice, clean, fresh gas - the old stuff with all the additives might be causing the smoke.

If the smoking doesn't go away with a fresh tank, check to smell the smoke to see if it's acrid or sweet.&nbsp Acrid smelling smoke is oil.&nbsp Sweet smelling smoke is coolant.


-Ted

mightymouse0x

yea, i jsut drove it around for about 20 mins, this is my first time driving my rx-7, i love it!!! hah but yea it stops smoking almost completely, once the motor is a warmed up. so yea i think its the bad gas, and the cat is working once it gets to its operating temp. so thats why its a lot less smoke. i smells like exhaust gas too me, so i dont know what kind of smell it has.

dr0x

Drain the tank or just go fill up with 94 octane.

Scott 89t2

half a tank of pre mix !?!?!?!?!?!?!

first unless you removed your oil metering pump you don't need it. 2nd if you did. you only need like 1/4-1/2 quart per full tank

87RXGhey7

you may be running rich

mightymouse0x

scott, its the recommended amount of premix, im jsut saying, the other half of the tank was a premix with 2 cycle and super premium.

drox i already filled it up with the highest octane i could, 93. im goin to keep driving it, and hopefully eventually it will stop.

mightymouse0x

scott, its the recommended amount of premix, im jsut saying, the other half of the tank was a premix with 2 cycle and super premium.

drox i already filled it up with the highest octane i could, 93. im goin to keep driving it, and hopefully eventually it will stop.

GEINN FC3S

bad gas makes u fart, thus the white smoke..... ahhaha

hondahater

iTrader: (2)

same as me lots of white smoke. I think I'm running rich because of 720 secondaries and big *** fuel pump. but I do have realy bad idle to. I don't know what the f*** it is.

wpgrexx

could running rich also cause some white smoke. My new motor smokes a little, but only after it pops a flame. Not coolant for sure, smells more gassy or oilish. I looked in the tail pipes and there was almost a thin coating of oily goo. The more I lean it out, the less it smokes, but until I can afford dyno time, I don't want to lean it out to much.

JGard18

Yeah, I'd vote for running rich.

My last RX7 smoked like crazy upon startup, then it all went away.

When trying to get inspected, the numbers were stupidly high, and really bad. It was more rich than Bill Gates.

5 point whoa

It's probably your gas, or sumthin not much of a problem, try using some mmo

rx-7fc

i think it might be the oil control rings going bad because my friends car did that when you start it up but when it warms up it goes away

mightymouse0x

im thinkin its the gas. i hope its the gas. the motor i just repalced is a series 4 na motor, it was bare motor, i have the OMP, all the manifolds, and all the everything from my S5 motor. would that make it cause the white smoke?

i hope its not the bad oil rings, cause i just swapped this engine in, because the last motor had bad oil rings.

5 point whoa, i bought it, and i put that b12 chem cleaner stuff in my tank. should i add the MMO in the tank too? or just the oil? or both?

rx789gtus

""""putting high octane gas in your rotary is like putting leaded fuel in a new honda, dont do it. Rotarys run the best on the lowest octane avail., people tend to load up with octane boost and 93 gas and when their rotary runs like **** wonder why...""""

That is what was said to me by another forum member so maybe you should rethink putting the high octane fuel in the tank and try some injector cleaner and just drive it like you stole it for a couple days and see if that cures the problem

ZenEfini

i dunno but im assuming that our good friend has a turbo...im not a rotary guru, but last time i checked...low octance gas will cause his engine to go....how you say KABLOOIE!

mightymouse0x

ok, i only ran 93, becuause the gas that was in there, was bad, real bad, the higher octane will mix with it, annd probably give that old gas a little boost, and evens out. im planning on running the car on the lowest octane, it was just to fill the other half of the tank with good high octane gas to clean things up a bit.

while the smoke seems less then how it was when i first started up, it turns out its not the gas. don from marvelspeed told me to keep it in a gear, and take it to high RPMs and then let off the gas and let the the RPMs drop. if i see smoke behind me, then its bad oil seals. and i did it today, and it happened. so yea i just swapped this motor, and wasted hundreds of dollars for a motor that has the same damn problem.

and zenefini, i dont have a turbo, my sig says a stock GXL, they didnt come with turbos. and u r right, low octane gas on turbo motor will **** it up bad

RunningDeer

Just wait awhile before assuming the O-rings are gone, or you could get BDC out of Garland(?), TX to take a look for you

mightymouse0x

BDC? well its no big deal really, its jus quite embarrasing when i start up my car and it smokes and fills up the whole area with white smoke for 10 mins. i will be getting the motor replaced real soon

wpgrexx

I think it is fuel man. Well my problem anyway and it sounds alot like your symptons. I just ran the tank down to real close to the bottom of the tank. I than dumped a **** load of injector cleaner in. I ran the rest of what was in there out and than put in another 10 bux with another bunch of injector cleaner. It is now barely smoking on startup and hardly ever while driving and when it does not even close to the huge amounts before


I think the gas went bad, mine that was in my tank and than whatever was left in the system when the new motor was put in, just got dirty from the garage and went bad. I think coupling that bad gas with running rich, caused the excessive smoking

mightymouse0x

man i hope it is the fuel. even though my motor will be in my car soon, while not soon enough, a couple more weeks. but yea ill deffinately try ur trick, i still got half a tank left. so ill be driving a lot tonight