Markie mark Posted March 27 Share Posted March 27 Just had the diesel return pipe changed on my s max and now the engine has got a knock, it has no loss of power . cheers all. Quote Link to comment Share on other sites More sharing options...
TomsFocus Posted March 27 Share Posted March 27 Diesel knock or 'loose part' knock? Quote Link to comment Share on other sites More sharing options...
unofix Posted April 4 Share Posted April 4 7 hours ago, dajuik said: Air in fuel line, choked fuel filter, weak fuel sender unit, choked air filter, spark plug/injector problem/IMV failure, adulterated fuel etc. etc. are some of the causes of engine knocking, missing, rough idling, pickup hesitation.. That's quite a list of things for the OP to check. Would you recommend a set of new spark plugs before doing anything else ? Quote Link to comment Share on other sites More sharing options...
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