Renault Clio 2 1999 1.4 E7J 780 siemens MPI - Misfire at idle, spark at all cylindersArchived Message
Posted by john ogilvie on March 15, 2005, 4:27 pm
Hi all need help This car has a serious misfire at idle no 4cyl, have good spark at all 4 cyls, swapped plugs & leads from cyl 3 to 4 misfire stays at no 4.Code read with acr4 no codes, Compression good,only 33,000mls, Put on gas analyser at idle co - o.oo co2 -14.9 hc - 2 o2 - .96 lambda i.046 Fast idle co -o.oo co2 -15.4 hc - 4 02 - .20 lambda -1.01 You can pull off no 4 lead & Hc remains the same no increase, which i take as no fuel at no 4 inj, or am i missing something, i can hear all 4 injs clicking away nicely with stethiscope,Strange thing is car seems to run ok & responds to throttle on open road, till you stop again & it holds the revs high slightly, Runs on 3 cyls at idle all the time Hot or cold, any ideas many thanks John