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Smoke after start up

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Old May 4, 2005 | 07:05 PM
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Default Smoke after start up

Hi,Need advice my 2000 coupe with 23,000 miles on it has a little black smoke coming out briefly after start up.Im thinking valve seals,but isnt that premuture for the milage. Thanks for any input Mark
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Old May 4, 2005 | 08:20 PM
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Black smoke is not oil, its bad combustion.
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Old May 4, 2005 | 08:35 PM
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Could be a leakey injector or even a dirty injector. I would see if there is an exsessive fuel pressure loss at engine shut down which would indicate that the injestor/s are leaking.

BC
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Old May 4, 2005 | 08:45 PM
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Could be a leakey injector. Check to see if your loosing fuel pressure after engine shut down.

BC
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Old May 4, 2005 | 08:48 PM
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What type and brand of fuel are you using?
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Old May 4, 2005 | 08:48 PM
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Thanks Bill,Mike That give me a direction to go.When i bought this i got extended warranty.With my c4 i hade to do it all.Thanks again
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Old May 4, 2005 | 08:56 PM
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Originally Posted by Bill Curlee
Could be a leakey injector or even a dirty injector. I would see if there is an exsessive fuel pressure loss at engine shut down which would indicate that the injestor/s are leaking.

BC
A leak down test will tell you if a lifter is leaking and which one. It basically allows you to pressurize the fuel system with the engine off and monitor the rail pressure. If the pressure drops too soon (don't know the exact time) you have at least 1 injector leaking through. Then the test requires unplugging and re energizing the system to verify which one is leaking. I don't have the tools to do this test but if you can find someone who does you can pinpoint the injector or at least prove it is or is not an injectory. 99 Nassau Blue
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Old May 4, 2005 | 09:13 PM
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Shell 93 oct
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Old May 5, 2005 | 03:23 PM
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Run some Techron through that baby. Shell Gas will make your gauge not work correctly. 2 Bottle of Techron will do just fine. IMHO
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