Question about Hyundai XG300
You can remove one by one spark cables, using a propriet isolator and observe change at engine's revolution. If removing a spark cable ( i.e. No3) and dont see decreasing change revolutions , then No3 cylinder is not working and you have to check next it's injector , valve clearance, or compression rate, to conclude what causes the problem.
Posted on Oct 08, 2008
Soundlike yu need new fuel injectors, thats pretty much the worst problems those engines ever have, the part is about $300 but alot of labor.
also check whether is cold or warm when rough if cold then cold start injector is bad.
it also causes due to its either an oxygen sensor or you have vacume leak in one of your hoses by the manifold.
also check properly
Could be a plugged fuel filter or a plugged catalytic converter. Try the fuel filter first as it relatively cheap.
also try try cleaning the air filter and the fuel injection system .
Posted on Oct 07, 2008
Check the timing belt, plugs, leads, spark plug seals (was leaking oil on top plugs), MAf sensor and Battery, oil/filter, TPS (throttle position sensor). Acceleration problems can also be caused by faulty fuel system. Check the fuel filter and fuel pump.
As for the idle issue, get the Idle Speed Actuator checked.
As you can see, there are quite a number of causes for this problem you are facing. You best get the engine checked out on a scanner before you start changing parts which may not be required.
Hope that helps!
Posted on Oct 07, 2008
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Posted on Jan 02, 2017
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