Question about Cars & Trucks
2009 nissan navara 2.5d, strange noise in engine on low refs, it sounds like a tappet or a piston, can anybodu assist me with this problem
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Posted on Jan 02, 2017
do you have a hole in the piston or gasket? If in the piston it is most likely from coolant or water. If water, could be a cracked head, or being sucked in through the intake and building up in the 6th cyl. I have a lexus that had a hole in the side of the motor and noon could figure out why. I pulled the head and found water... Put new block in and egr codes came up. Pulled EGR and found it was sucking in water, due to an exhaust leak that was allowing condensation to build and would not blow out once in the egr tube. If you face the same problem (hole in block) I am going to say too much compression. Could be from head gasket not being torqued properly and leaking cooland, cracked head, or wrong spark plugs-and worst case scenario which I have yet to witness, bad spark plug gap. Not likely on your car, i would think.
Posted on Mar 29, 2010
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