Question about 2001 Daewoo Nubira

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Hard to star when cool

The spark plug and cable 2 month old, it was runing perfect, star and go, no problem. after I spray with engine cleaner and hoses with water the engine hard to star every morning and when the car stop within 1-2 hour also difficult to star the engine, I replace air flow sensor, and cleaned the air flow system with alcohol. Please responce.

additional information: I replaced again the spark plug all 4 new
also replaced fuel filter new, check Oil and gas in perfect.
Thank you for your kind attention and your help on this matter
Regrads
LT

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Modern vehicles should never be hosed down for cleaning as in years-gone-by. Too many sensors to short out. The most susceptible to problems seem to be the Throttle Position Sensor (TPS) and Manifold Absolute Sensor (MAP) {when equipped}. Others can be affected too. Either of these can create a number of driveability issues including hard start, no start, rough idle, incorrect idle speed, surging and poor fuel economy. Check for any trouble codes and as a starting place. If no codes then be sure to check TPS voltage & response with a scanner (not code reader). Good luck.

Posted on Jun 28, 2009

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Distributor cap! That's were the spark plug cables attach to.

Posted on Jun 28, 2009

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