white smoke
06-08-2012, 12:17 PM
#1
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Join Date: Jun 2012
Posts: 5
white smoke
I'm having a problem with my 91 rx7 it was originally EFI but the last owner pulled it off to put a racing beat intake and car problem I'm having is a smoking issue at idle dose not smoke nor at normal driving standing still if I rev it hard it don't really smoke till I let off ,now under load say if floor it from a light it will leave a cloud of smoke no over heating issues, no hesitation, no power loss ,I was told by old shkool rotary heads that its a mixture issue too much oil not enough gas, another buddy piston mechanic said he noticed the valves on the rotor housings where the oil mixture lines go said it could be a problem with the conversion from efi to Carb he say when u rev u get Max vac when realese the throtal and it closes. Which would make sense with what its doin when i release the gas it smoke like its dumping made oil in the combustion chambers
Any idea would be appricieted
Any idea would be appricieted
06-20-2012, 02:40 PM
#6
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Re: white smoke
I'm gonna say oil since it since the oil buzzer went off last night and I put 2 quarts 3 weeks ago because of that buzzer but again it only smokes when I'm getting on it it idels fine no smoke nor while normal driving
06-21-2012, 08:32 AM
#7
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Re: white smoke
If you went through 2 quarts in 3 weeks, I think we can safely assume it's burning oil (at least). Best to top it off every time you gas up, or even every time you start it.
Any idea of miles on the engine since new or last rebuilt? Any history of overheating? You should check the output of the metering oil pump, but I strongly suspect you have a sealing issue in the engine. You should probably check your spark plugs periodically for oil fouling.
Any idea of miles on the engine since new or last rebuilt? Any history of overheating? You should check the output of the metering oil pump, but I strongly suspect you have a sealing issue in the engine. You should probably check your spark plugs periodically for oil fouling.
06-21-2012, 01:34 PM
#8
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Re: white smoke
Its sitting at 118,000 idk any other history on it just got it a few weeks ago how do I heck the output of the metering pump I mean the oil seam full all the time my 12 car years ago I never saw the lines solid black and full of oil it would pump enough to just drip in the Carb a constant drip that is and more frequent at higher rpm never had a prob with smoke this 13b the lines are full all the time u can see the flow as well seems odd to me but then again this is my first 13b so I'm not familiar if that's normal
06-22-2012, 08:13 AM
#9
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Re: white smoke
Really the only reason I mentioned the oil metering pump is that you said it had been messed with by the previous owner. There's a procedure in the service manual for checking the flow.
If the oil consumption is due to wear in the engine, then you can opt to run a heavier weight oil and see if that helps.
If the oil consumption is due to wear in the engine, then you can opt to run a heavier weight oil and see if that helps.
06-22-2012, 12:22 PM
#10
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Join Date: Sep 2002
Location: Tallahassee, FL
Posts: 5,425
Re: white smoke
Really the only reason I mentioned the oil metering pump is that you said it had been messed with by the previous owner. There's a procedure in the service manual for checking the flow.
If the oil consumption is due to wear in the engine, then you can opt to run a heavier weight oil and see if that helps.
If the oil consumption is due to wear in the engine, then you can opt to run a heavier weight oil and see if that helps.