Well...the misfire on 1 and 3 would explain the rough idle. The misfire could be from worn plugs, wires, bad coil, or bad injectors.
Idle Sensor might be no good Spark plugs also will cause this....
if you find a answer on the idle issue let me know my 95 does the same thing as far as smoking mine does that too when its cold out i was told it was the valve seals r bad
It's not relevant that the car is a Mazda 3; it's an internal combustion engine problem and the question has been answered several times. This is not a good thing, even for a Mazda. If you were hoping Mazda has some sort of black smoke producing device that indicates normal engine operation, sorry.
1.rough idle 2.hesitation when accelerating 3.wrong fuel/air mixture 4. high fuel compsumption
Mazda 3 exists. Mazda 4 doesn't. Did you mean Mazda 5? The difference between the Mazda 3 and the Mazda 4 is that the Mazda 3 is a compact car manufactered by Mazda. It was introduced in 2004. The biggest difference between the two, is that the Mazda 4, doesn't exist.
Mazda speed 3, the 1st Mazda the Mazda cop. ever made, the Mazda 3, for more Mazda cars visit: MazdaUSA
There are several things that can cause your 1999 Ford Crown Victoria to idle rough when it is cold. The most common cause is a leak in one of the vacuum hoses.
Mazda!
The IAC (idle air control) may be at fault. Has the check engine light been on?
the answer is quite easy actually it falls into 3 catergories.timing is usually the first and best place to start,get a timing light and see where your timing is set,if it is outta time then correct it.secondly start by making sure your carbeurator is clean and operating the way it should be.is it delivering to much fuel or not enough make sure your fuel and air adjustments are correct especially on aftermarket carbs.and last but not least your camshaft,if it is an aftermarket cam and was installed professionally some cams are supposed to have a rough idle for instance.a crane cams energizer camshaft 272h thru 302h has a rough idle im using the 274h and atwith 274 degrees adv.duration and a gross lift of .450 degrees with an r.p.m range of about 1800-to 5800 i have a rough idle this is to be expected even if your an at home mechanic you should read about the cam you are using does it have smooth,good or rough idle they all work very efficently depending on your performance needs...
yes