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|23rd March 2009, 11:48||#16|
Join Date: Mar 2008
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I changed the oil + filter and the clatter continues. Anyway, Hyudai claims it never used any aftermarket filter other than original Hyundai ones.
Cleaned-out combustion chamber should result in higher engine performance, I think? In my case, there is visible loss of torque; also fuel efficiency has dropped from 14km/liter to 11.5km/liter of diesel. So, this also seems unlikely to be the cause of the clatter.
But, this leads me to a different thought. Assuming premium shell fuel displaced any carbon deposits, should I try an engine flush now?
Tucson has a compression-ignition engine. Anyway, I will talk to the Hyundai mechanic about knock-sensors and see what comes of it. I suspect he will give me a blank look - most of them are pretty illiterate when it come to real mechanic work. Mosttimes, it is like talking to a brick wall.
I got another tip that this could be due to clogging of CVVT (continous variable valve timing device) due to low viscosity oil usage. Does the Tucson CRDi have a CVVT at all?
|23rd March 2009, 20:21||#17|
Distinguished - BHPian
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Location: New Delhi
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Why don't you shift back to normal (regular) IOC /HP etc. diesel and see if the clatter goes away after a tankful / and/or mileage improves after a tankful. Hyundai recommends normal diesel anyway - so does Toyota.
|12th April 2009, 13:11||#18|
Join Date: Dec 2006
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