Engine revs normal until it reaches working temperature. when reach working temp. engine performance is a bit poor and it can’t reach max revs. it start to cut on 5400rpm in every gear, no matter how I accelerate, slow or full throttle at the moment. it goes normal to 5400rpm than starts to cut acceleration. I change sparks and I clean injectors.
pls, hellp :(
Have someone handy to press the gas pedal for you after the engine has warmed up well; best if driven.
While you listen at the exhaust pipe, have your helper increase the revs slowly and note whether the exhaust note changes to a hiss, instead of the sound of an engine firing.
You may have a decayed catalytic convertor and when they come apart inside, they can clog mufflers and resonators (the second, smaller muffler).
I've had this happen on more than one car and when it happened on a Fiat Strada years ago, since the routing of the system was fairly straight and made of heavier gauge stainless steel, I fired two shots with a .357 magnum into the tailpipe.
Never had another problem with it.
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engine works normal when is "cold" . it seams that injectors are dirty cause gas test says mixture is poor. I'll wash them to see the diference.
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When machine temperature reaches 8, it accerates to full throttle automatically. The manual accelerator switch stops working.
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i recently purchased a nissan murano 2007 platinum edition, The engine light is on. I have changed the gear box but still experiencing same problem. It still does not go pass gear 3 no matter how hard i fire the car.it consumes more petrol and there is a loss of power suddenly when driving. the revs goes down and i need to stop on the accelerator hard and still goes very slow.
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