Lacetti DTC P0300

2007 DAEWOO LACETTI
25,000 MILES • 4 CYL • 2WD • MANUAL
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ALICJAR
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  • 1 POST
I hope you can help with my present problems with my Lacetti 1.4L (2007, millage 25 000km).The engine runs unevenly at idle and the vehicle shake .Trouble code showed is P0300. Visual inspections did not help to find the reason .All cables and connections looks well.
Misfire occurred for quite some time, but the whole car began to shake recently. There is no smell, leaks or performed repairs .I am very begginer . Could anybody advise what is the most probable reason ? From what should I start ?
Jun 7, 2011 at 1:13 PM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
Misfiring usually are due to bad spark plugs. start with that.

Check all components relayed to ignition sparks.

Next to chekc would be the fuel system, check the injectors.

Engine comporession or vacuum leaks are other possible causes for misfiring.
Jun 7, 2011 at 1:59 PM
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