RX7 Smoking.
Thread Starter
Junior Member
Joined: Apr 2011
Posts: 11
Likes: 0
From: London, Ontario, Canada
RX7 Smoking.
My rx7 is smoking when it runs. Smokes a lot when I first start it and I notice it smokes more and more at the higher RMPs. What could be the problem? 
[youtube]MMnpD1J1o1A [/youtube]
[youtube]MMnpD1J1o1A [/youtube]
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
The problem is that license plate. Seriously. 
Sine I didn't hear any turbo noises I will assume NA, so it's not a problem with turbo seals.
That leaves really only two possibilities: bad purge system or worn out oil o-rings.
Test the purge system by running without the oil cap briefly. If the smoke stops, then you've found your issue and the purge valve needs to be replaced.
More likely however the oil o-rings are just worn out. High mileage, too thin an oil, and sitting can cause this issue. The only way to replace them is to rebuild the engine. Now that said, if you can handle the smoke it may run perfectly fine for many years like this before the oil consumption increases to the point where it's a real problem.
You're in London and I've never seen your car around?
Sine I didn't hear any turbo noises I will assume NA, so it's not a problem with turbo seals.
That leaves really only two possibilities: bad purge system or worn out oil o-rings.
Test the purge system by running without the oil cap briefly. If the smoke stops, then you've found your issue and the purge valve needs to be replaced.
More likely however the oil o-rings are just worn out. High mileage, too thin an oil, and sitting can cause this issue. The only way to replace them is to rebuild the engine. Now that said, if you can handle the smoke it may run perfectly fine for many years like this before the oil consumption increases to the point where it's a real problem.
You're in London and I've never seen your car around?
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Joined: Jun 2004
Posts: 11,359
Likes: 14
From: Grand Rapids Michigan
If it smells like oil, check into Lucas Heavy Duty Oil Stabilizer. My 12a smoked worse than that, but I got another couple of years out of it nearly symptom free by running a quart of Lucas with my oil.
If it smells like coolant, check into Alumaseal (not Bar's Leak, or anything else, be specific). This stuff works great on 12a motors, but only sometimes on 13b.
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If it smells like coolant, check into Alumaseal (not Bar's Leak, or anything else, be specific). This stuff works great on 12a motors, but only sometimes on 13b.
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