Focus Posted August 6, 2010 Share Posted August 6, 2010 Hiya my mondeo has started to make a knocking noise sound like when your tappets start knocking but it only starts knocking when its warmed up its lovely when cold any ideas guy/girls Quote Link to comment Share on other sites More sharing options...
jmurray01 Posted August 6, 2010 Share Posted August 6, 2010 First of all, please don't use more than one question mark in a title. Second, your problem could be rod-knock, when the con-rods wear, usually due to the engine having high millage, being reved a lot, or having dirty oil. Though if it's more of a slap it could be piston-slap, caused when your timing is out. Try changing the oil and putting some oil additive in with it to help lubricate all the parts better. Quote Link to comment Share on other sites More sharing options...
mintalkin Posted August 7, 2010 Share Posted August 7, 2010 is it a knock or more of a pinking sound,piston slap would be worse when cold,a common cause of rattles and pinking when warm on the 1.8 is the swirl plates or there shaft worn. 1 Quote Link to comment Share on other sites More sharing options...
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