blow_away Posted November 29, 2012 Report Share Posted November 29, 2012 Hi Guys Mrs blow_away's Focus has developed a misfire at 1500 revs, any gear. Other than the misfire it runs sweet as a nut. It's a year 2000 1.6 petrol Zetec. So far I've changed the plugs, HT leads and air filter but no joy What next? Link to comment Share on other sites More sharing options...
srad34 Posted November 29, 2012 Report Share Posted November 29, 2012 MAF sensor, CAM position sensor? Link to comment Share on other sites More sharing options...
Bungle Posted November 29, 2012 Report Share Posted November 29, 2012 MAF sensor, CAM position sensor? I would go with crank sensor. My motor had the same issue & it would not show on any diagnostics but my mate at the garage suggested the crank sensor. & it was. Link to comment Share on other sites More sharing options...
Chrisball Posted November 29, 2012 Report Share Posted November 29, 2012 Coil pack at side of rocker cover Link to comment Share on other sites More sharing options...
hoona6 Posted November 29, 2012 Report Share Posted November 29, 2012 Having had similar issues I'd go crank position sensor, coils, MAF sensor in that order. Link to comment Share on other sites More sharing options...
bikemike Posted November 29, 2012 Report Share Posted November 29, 2012 Almost certainly the coil pack, a very well known weak point. I've changed loads over the years. Don't go to ford, get one from eurocarparts, unipart or similar, loads cheaper. Link to comment Share on other sites More sharing options...
blow_away Posted December 28, 2012 Author Report Share Posted December 28, 2012 Zombie thread, brainnzz Got some free time today, so I fitted the coil pack, It was a bit tricky getting the spring retainer off the wiring to the pack, in fact it was so tricky to refit that I cheated and put it on the wrong way up. Mrs reports no misfire and she's chuffed so I might even get lucky later Thanks guys. Link to comment Share on other sites More sharing options...
bikemike Posted December 28, 2012 Report Share Posted December 28, 2012 Bit late now, but you don't need to take the spring clip off. Hold the plug and squeeze the clip- the plug now pulls off easily with the clip in place. I doubt you'll need to do it again but it might save you some time. Glad the car's running ok now. Link to comment Share on other sites More sharing options...
srad34 Posted December 31, 2012 Report Share Posted December 31, 2012 Coil pack at side of rocker cover This ^^^ plus clean MAF..... Link to comment Share on other sites More sharing options...
potheadpixi Posted January 6, 2013 Report Share Posted January 6, 2013 Isn't there an issue with rain water dripping onto the coils via the washer jet nozzle aperture ? apparently the nozzles are not sealed in the bonnet. I believe there may be a mod to stop this as my mate went through all this with his Ford dealer and ended up sorting it himself with a Bosch coil pack, new HT leads and the washer jet mod. Link to comment Share on other sites More sharing options...
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