Question about 2002 Hyundai Accent

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My hyundai accent '95 misses when its cold.

The problem however goes away when the engine's warm. Changed throttle sensor,air flow sensor & idle actuator, fuel pump, & did a full service. Idling is also high. what could be the cause?

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Comment from the FixYa Moderator Staff:

I DISAGREE with the solution provided by Eliase.

You should NEVER spray 'starting fluid' in the engine compartment.

Starting fluid contains ether, and is extremely flammable.

Usage of staring fluid to look for vacuum leaks is a potentially dangerous situation.

I respectfully request that you refrain for using starting fluid.

What you CAN use, however, is a commonly found product, namely carburetor cleaner. This chemical is less flammable, and is used very often in the automotive business. Spray the carb cleaner near the intake manifold(s) where they connect to the block. If the idle changes, you have found the area that needs attention.

I would also doubt that you have a head gasket issue.

Posted on Oct 02, 2009

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That sounds like a vacuum leak try spraying starter fluid around the intake manifold gasket and vacuum lines when you hear a change in idle you have found the leak if no leak check compression may be a blown head gasket

Posted on Oct 02, 2009

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