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Chris
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IfDetermine if it is one cyl causing the car runs good when warmed up you have a lean condition when cold. Check for vaucuum leak, faulty coolant temp sensor, low fuel pressure,problem by disconnecting the injectors may need cleaning? You checked compressionone at a time (as it is misfiring). All cyls should If a cyl doesn't change the way it runs as much as the others be sure the compression is within 10psi10 psi of each otherthe others. If oneit is more thanthen possible vacuum leak at that it could also cause this conditioncyls intake, valve adjustment or the injector? If all cyls make the same difference its either a vac leak (affecting all cyls), valve adjustment, coolant temp sensor or dirty injectors.

If the car runs good when warmed up you have a lean condition when cold. Check for vaucuum leak, faulty coolant temp sensor, low fuel pressure, injectors may need cleaning? You checked compression. All cyls should be within 10psi of each other. If one is more than that it could also cause this condition.

Determine if it is one cyl causing the problem by disconnecting the injectors one at a time (as it is misfiring). If a cyl doesn't change the way it runs as much as the others be sure the compression is within 10 psi of the others. If it is then possible vacuum leak at that cyls intake, valve adjustment or the injector? If all cyls make the same difference its either a vac leak (affecting all cyls), valve adjustment, coolant temp sensor or dirty injectors.

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Chris
  • 11
  • 2

If the car runs good when warmed up you have a lean condition when cold. Check for vaucuum leak, faulty coolant temp sensor, low fuel pressure, injectors may need cleaning? You checked compression. All cyls should be within 10psi of each other. If one is more than that it could also cause this condition.