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Can a bad EGR valve cause the engine to backfire?
It can cause massive Engine failure and blow up the whole car, so be careful.
What could cause blue exhaust?
Blue smoke means oil. Rings or valve seats. your car is burning oil.
Will a PCV valve make your car smoke?
Yes
Why would a car blow grey smoke?
Normally it would be due to valve stem seals, however oil rings may be the cause.
My car starts to smoke under the hood on the driver's side. What may be the cause of this?
Oil leak? Valve cover gasket? Power steering pump?
What is the cause of a big cloud of white smoke when you first start your car up?
Possibly oil rings broken or valve stem seal/valve seats worn out. Test for compression and gasket leaks.
What causes smoke to come out when a car is started?
The most common cause is worn valve guides. Any oil sitting on top of the valve will run down the valve stem while the car is not running. When you start the car, the oil that has accumulated at the valve seat immediately gets sucked into engine and burned off when the engine starts. This results in the blue puff of smoke coming out of your tail pipe which goes away after the motor has been running a while. Carl King http://www.classiccarauto.com
Would valve cover leak cause the car to stall?
I would not expect a valve cover leak to cause a car to stall. A valve cover leak can fill the spark plug area with oil which can cause rough running.
What cause the hyundia gls 1999 to smoke after the car is turned off?
What cause the hyundia gls 1999 to smoke after the car is turned off? Read more:What_cause_the_hyundia_gls_1999_to_smoke_after_the_car_is_turned_off
Can a EGR Valve cause your car to get hot?
nope
Can the idle control valve cause a car to overheat?
no it can not.
Why would a car blow blue smoke then clear after about 20 miles?
My guess would be bad valve seals and/or worn valve guides.
