Question about 2007 Kia Optima
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Posted on Jan 02, 2017
SOURCE: engine knock
If your engine's knocking is indeed internal damage, you have worn/damaged bearings in either the mains or connecting rods.
Repair requires engine partial overhaul, and should be performed by a qualified service technician.
Posted on Dec 26, 2009
I assume by now you have this problem fixed, but if not, or for the benefit of others looking for help, try replacing the coil on the #5 cyl as well as the injector. Ours did same thing, except fault code was on #2 cyl, so I got the parts from local parts store for about $150 total, and completed the repairs myself on my wife's 2003 Sedona. Now i can start on the rear heater issues, the knocking sound coming from the LF tire area while in motion, and replacing all brake pads. 92,000 on the odo. I'll spend the extra $ and go with the Honda Odyssey next time.
Posted on Jan 02, 2011
Sound like you have spun a bearing do to a blown head gasket. Does the oil on the dipstick look almost like a chocolate milkshake in color? If so your coolant has reached the oil pan and that can definitely cause the engine to spin a bearing causing a loud knocking sound.
Posted on Apr 03, 2012
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