LIRX

I recently bought my first rx7. its a 84 gsl. I decided that I was going to pre-mix so at my first fill up I did so. I drove the car for a week almost daily with no problems but now that it's winter I don't drive the car that much. When I do start it up now and drive it, it smokes. I think that all of my 2 cycle oil is sitting at the bottom of my tank because it just the car doesn't move to keep it mixed. Does anyone know for sure?

mikewoodkozar

probably is what happened. Did you remove your MOP?

IanS

iTrader: (4)

Do you have your OMP (aka MOP)still hooked up? If so, then the reason you are smoking so much is that you are putting in way more oil than is actually needed. If you do have your OMP unhooked, then how much oil are you putting in?

LIRX

OMP is disconnected. I use about 1oz per gallon.

mikewoodkozar

sounds about right, how empty was the tank when you put in the oil for the first time?

'84-12A-GSL

ALL 2 stroke engines smoke due to the burning oil, especially in the winter. I'm guessing the same principles apply to premixed fuel in any other type of engine.

Haven't you ever heard the term 2-Smoke? Get it...a pun on 2-stroke?

Are you talking a ridiculous amount of smoke? Does it clear up at all after the engine has warmed?

I don't think the oil and gas separate, the company's definitely have it down to a science so that the oil mixes with the gas and stays that way. I've left pre-mix in jugs, and have had my dirt bike / chainsaw sit for months, and the gas and oil doesn't separate.

LIRX

It smokes more than a little at start up (normal) but it stays pretty thick. I'll have to check my ratio's. I think that's the problem. Too much 2 cycle oil. Thanks.

mikewoodkozar

8412AGSL, you sig is too wide, lol and i have personally seen two stoke oil separate and sit at the bottom of gas cans

LIRX

Well then that is prob what my problem is. I don't think it can hurt anything though.

Jeff20B

iTrader: (13)

I turned all sigs off about a week ago. It's been nice.

mikewoodkozar

jeff, lol, i should do it

Jeezus

iTrader: (4)

1 oz per gallon is twice more than you need. Unless you run a monster bridge/pp 11k rpm race motor etc, then you put more in. Other than that, only 1/2 oz per gallon. I had the same problem as you, and since I moved down, a ton less smoke.

'84-12A-GSL

My sig has been that size for months.... I should probably update it, but photo shop got erased off my PC...suppose I could make one with MS paint thou...

mikewoodkozar

lol, that sucks about loosing photoshop

robs_seven

iTrader: (1)

i run a half ounce per gallon but i use idemitsu rotary fuel lube. i have never had any smoking problems, and with that kind of premix it will not settle out in your tank.. idemitsu is a clear lube so you dont get the black/gray smoke

trochoid

iTrader: (6)

1oz/gal. is the norm for pre-mix, that gives a ratio of 128:1. At that ratio, you shouldn't be getting excessive smoke, cold weather however can cause it. While pre-mix may seperate out in a gas can, it shouldn't in the fuel tank due to the agitation from driving and the fuel pump circulating the fuel. Long term parking may do it though.

Vashner

I think my OMP is not working the lines are clear. I am gonna test out a tank of mix and see how it goes. It just does not smell right and feels like it's spinning dry. It's also not using any of the motor oil (well I only drove 500 miles but it didn't move down the stick at all).

Might try that procedure soon to see if it's dripping out of the lines.

rearviewmirror

I'd premix my Rx-7 only if the exhaust smelled like a 2-stroke......