Renault Clio 1.2 DF4 2002 - After 30 seconds from cold starts to missfire on #2 then #3 on roadtestArchived Message
Posted by dave emm on November 11, 2006, 12:14 pm
help!! starts and runs ok cold then after about 30 seconds starts to missfire on no.2, then on road test no.3 goes down also. have renewed coil, leads and plugs, checked compressions and valve clearances, also checked for leakage between 2and 3 all ok. spark is good even when missfiring. 1 and 4 plugs look normal 2 and 3 look sooty. modis just comes up with missfire no 2 and 3.almost impossible to connect scope to injector leads as they are buried behind inlet manifold and encased in rubber. thought there might be usual trouble with ecu security device but checks out ok.not sure where to go next, would appreciate any help,dave.