Question about 1983 Mazda RX-7

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Hey I got a 12a and when i start it up after not running it for a couple of day sometimes one day it smokes ALOT till its hot then it runs good but when i take it up near the red line and hold it there for a second it smokes again and for a while after that

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  • Steve Jensen
    Steve Jensen Dec 19, 2010

    what color is your smoke, black or white?

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girlodell bracamonte

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Sir, maybe you should change you engine oil

Posted on Dec 19, 2010

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My 91 300zx running to rich and now dont start


Check your fuel pressure. Make sure it is within specification, sounds like you have a bad regulator.

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So I drive a 1999 chevy Cavalier and ive been having many problems with it. It blows black smoke sometimes from the exhust, on the hot and cold gauage the needle works its way to the hot end all the time,...


Hi,
It sounds like you have alot of problems which may only be a couple.
Have the coolant thermistor checked, it sounds like this is not switching off and causing the engine to over fuel, making it run rough and blow black smoke out the exhaust.
Have the engine thermostat checked it maybe faulty causing the engine to over heat., have these done and see how you cars goes then.

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Truck starts, runs great, and sometimes won't start up again till the next day...Why?...battery is good...could it be fuel filter?


when you say it won't start again until the next day? does that mean after turning your truck off it won't start immediately? After a couple of hours of sitting have you tried it again. Are you sure your truck is running fine? is there a sulfur smell or extra warm coming form the floor? It could be your catalytic converter which is clogged, when the truck is cold.. you are getting enough exhaust escaping allowing the truck to run, but it will be very restrictive and I highly doubt that you are getting good acceleration, once this is hot is so restricted that it will not allow the truck to restart.
This can be a serious condition and if parked over dry grass or trash could actually start a fire. Take you vehicle to a respectable exhaust specialist.

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It doesn't have to run hot to be blown. Sounds like you have oil getting into one of the pistons when you make that turn. After a couple of times, it ruins your plugs and that's why you're getting a mis-fire. It sounds to me like the engine itself is blown. The pistons along with the plugs are firing (burning the oil that gets into the cylinder walls. It's time to look into a rebuild.

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96 chevy 3500 6.5.l td


cold start device on the injector pump,

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