2003 Fiat Punto morning start

2003 FIAT PUNTO
65,000 MILES • 4 CYL • 2WD • MANUAL
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JJAYS2000
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moring start is the worst thing to me, the car starts propperly but it keeps shaking till the RPM reaches 1400, at the bigening it stays at 900 RPM. but after a while it works properly.

the second thing is while breaking the RPM drop down to 500, then it comes up to the normal average, does these problem cause knocking with the engine.

i changed coolant, knock and crankshaft sensors, to get rid of the issue but I'm still no use.

also i have gas smell after any kind of drive
Mar 17, 2010 at 11:54 AM
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DAVE H
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check for engine vacuum hose leaks
Mar 23, 2010 at 5:43 PM