It start normally,but reved for a minute, then idle normally with no knoking sounds. While driving,from time to time,lack of power even when rev.Last day,start and driven about 100m, lots of dense black smoke from exhaust and no power at all,could not drive.management light is on.
Also, while rev at starting the spedo is moving up and down for that minute,then stops when idle.
Can anybody help me with an opinion?many thancks!
{subject header tidied up}
Edited by Dynamic Dave on 06/07/2008 at 12:50
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redhorse
A blocked soot filter in the exhaust, or a stuck-open EGR valve, could give the black smoke.
Not sure on the speedo effect; maybe a bad earth on the engine? Check the strap on to the gearbox - they corrode through.
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Screwloose,
Thank you for reply.A soot filter in the exhaust mean the catalitic converter or particulate filter? I'll check in week-end and let you know.
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egr valve changed after vacuum testing.there is vacuum at the vacuum pump,at the vacuum regulater is 3.5in Hg.i took out the tube from egr,connect the vacuum gauge,apllay vacuum but the engine is still runnig with no effort.When rev the same: dense black smoke.I don't know!
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I have news> today I took out the cat. converter>I noticed that when start, the engine idle normally,not rev-ed like before,and the speedometer is not moving at all.But when rav to 2000rpm is strruggle.Egr valve is working.Any idea what is it?
Edited by Dynamic Dave on 28/07/2008 at 21:43
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