is premix the couse of this?
#1
Damaged Little F*cker
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is premix the couse of this?
a friend of mine just bought a T2 today. the guy he got it from isnt all there, kinda slow, but the car was in decent shape for only costing 750 bucks. but the one nagging question in my head about the car is why does it smoke so much? it smokes on startup, but after the car heats up to operation temp, it disapears. the guy at first said it was because the car has been sitting for so long. the smoke is grey-blue and reeks of oil. well my friend and i drove the car and it smokes when under boost as well. when i asked the owner about that, he told me it must be becase of the 2 cycle premix he put in it. i can kinda believe that, but im still not too sure. any other reason it would smoke like that. only on startup and under boost. is it the premix, turbo seals, or a bigger problem?
#3
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Well I and at least 3 guys in the Tampa area premiix that I am positive about and nobody has smoking problems. So I don't believe that premixing is the cause of the smoke. 2 stroke oil smells a lot different than motor oil when burning btw.
#4
Originally posted by Capn' Wankel
Well I and at least 3 guys in the Tampa area premiix that I am positive about and nobody has smoking problems. So I don't believe that premixing is the cause of the smoke. 2 stroke oil smells a lot different than motor oil when burning btw.
Well I and at least 3 guys in the Tampa area premiix that I am positive about and nobody has smoking problems. So I don't believe that premixing is the cause of the smoke. 2 stroke oil smells a lot different than motor oil when burning btw.
#5
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first things to do is get a used car inspection from a rotary mechanic, it could be many things but a TII for 750 is a steal, replace oil injector lines and the turbo oil lines, there is no need to premix if the the stock oil injection is working properly...................
#7
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even if it is the oil seals you can pick a jspeck TII engine up for under 1000 US, I sugest you do that, damn I wish my seller was that incompetenet!
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#8
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Originally posted by BlackRx7
there is no need to premix if the the stock oil injection is working properly...................
there is no need to premix if the the stock oil injection is working properly...................
And besides, deposits can lead to preignition and detonation when they get really thick and nasty!
But there are many, many reliable NA engines with stock oil injection so it can't be too harsh. I am just a clean freak I guess
#9
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well premix reduces's octane which cause detination, and i have seen rotor housing using the stock oil injection......you just have to have it calobrated correctly, mazda use that for simpicity..........
#10
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The ratio of premix is 150:1 to 200:1 and lowers the octane by a fraction (less than half) of a point. Housings do not build up the crud because they have apex seals scraping them continuously. The rotors get the carbon coating . . .
#12
Engine, Not Motor
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Originally posted by 88 SE
Dont use premix if you REALLY want your rotors to end up looking like this:
Dont use premix if you REALLY want your rotors to end up looking like this:
#13
Laying Down Rotary Law
Sounds like a carbon seal on the turbo
Oil drips after you turn off the car for a while and smokes when you crank it up and then goas away till you hit it hard
Bad O-oil seals would smoke at all RPM's
Oil drips after you turn off the car for a while and smokes when you crank it up and then goas away till you hit it hard
Bad O-oil seals would smoke at all RPM's
#14
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when a car has bad oil control rings, it will smoke at high RPMs. I would try putting thicker 20w50 oil in it, and run the tank to E and re fill it with the correct amount of 2 stroke oil
#15
Rotary Enthusiast
Originally posted by Aaron Cake
Yeah, god forbid it look like a rotor showing perfectly normal wear...
Yeah, god forbid it look like a rotor showing perfectly normal wear...
#16
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well the only reason i think the smoke might be from the premix is because the stock oil metering system is still there. i figure if there is extra oil present in the fuel, then when its added to the oil already being injected into the motor, it might cause smoke at some times. i wouldnt put the turbo out of the question though, that could very well be the problem.
#17
I dont believe that would be enough oil to make the exhaust smell like it is constantly burning oil or make it visible. Run the gas out of it, then fill the tank up and run it out again. It should mostly clean any premix out of the tank. But ugh, it sounds like the turbo is on its way out.
#18
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Yeah, he'd have to put a shitload of premix in there for it to cause smoke. I run with about 13 oz of premix per tank in addition to the OMP (so I'm burning about twice as much oil as I normally would) and my 7 doesn't smoke at all.
Although the exhaust is LETHAL.
Although the exhaust is LETHAL.
#20
Damaged Little F*cker
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dont i know it. my T2 runs rich as all hell thenks to a pair of untuned 720s. i can only stand behind my car when its running for a few minutes before i need to come up for air. heh.
#21
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Premix is not the cause of the smoking, the oil seals on the turbo are going, do you have any shaft play? Not that is matters it smokes alot right? Its either engine seals or turbo seals.
I run heavy premix and OMP, my engine has over 300,000, and smokes heavy after a 7000 plus RPM run, but only for maybe 5 seconds..Smoking isn't a bad thing always.. if the car is fast and runs good, **** it and smoke out...
I run heavy premix and OMP, my engine has over 300,000, and smokes heavy after a 7000 plus RPM run, but only for maybe 5 seconds..Smoking isn't a bad thing always.. if the car is fast and runs good, **** it and smoke out...
#24
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That high spot he means is the one created by running the OMP. The center section of the apex seal section, that what he means by high spot.. If he really used premix the whole time, the rotor would not have those low spots/ high spot across the apex seal...It would have uniform wear, and less of it....
#25
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2-Stroke injection
Does anyone know if there is a way to inject 2-stroke synthetic oil through the oil lines? It seems to me that this would be a better way to go than premixing the oil with the gas. I know that an oil tank would have to be installed, but it wouldn't have to be that large. Motorcycle manufacturers have done this since the '70s.