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Check plugs first, mixture harder to ignite when cold so usually hard cold starting is the first sign they are degraded, Next check IAC (idle air control) to ensure is operating correctly, could also be engine temp sensor (not likely) maf (also not likely) fuel pump not boosting/low pressure/dirty filter (possible) Also check vac hose condition and intake hose very closely-a lean condition will also be more noticeable when cold causing hard starting and or misfire but not when warm if not a severe leak.

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Q: What could be the problem if a 2005 ford 500 has a hard start in the morning or when the engine is cold?
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