bobbymkII 0 Posted May 11, 2011 car now running...but once heated up ...as i rev car up to 4k let it come back down its self foot off gas it has a slight back fire as revs pass 2k going down.... just fitted new spark plugs ....car runs fine and idles perfect...just back fire slightly ..... bare in mind this car has sat for 6 months off road in scotland over the coldest winter ever...lol...so no idea if this has something to do with it???? or is it overfueling for some reason????? lambda sensor???? any clues please fire away,,, Quote Share this post Link to post Share on other sites
dannyboy 0 Posted May 12, 2011 try easiest stuff first:- What state is your battery in?How old is the fuel?In fuel filter clogged?HT leads got any signs of cracks?they can be very,very small cracks but still cause misfire especially when wet is dizzy timing is out slighty or blue temp sensor is busted?.Remember dizzy timing has to be set dynamicaly ie.. at 2500 rpm with temp sensor disconnected and all electrics off. a slight back fire means its not running properly even only on overrun.Metering head set right?Injectors spraying correctly? Quote Share this post Link to post Share on other sites
bobbymkII 0 Posted May 12, 2011 cheers danny..i think its down to fact car has sat for 6 months with just under red in tank Quote Share this post Link to post Share on other sites
