Have another misfire thread...sorry . OK....it's a 1.6 twinport 53 plate MK4 estate. Started kangorooing couple of months ago, went to garage for service anyway and they changed coilpack and plugs. Seemed OK for a day or two then started getting missfire on multiple cylinders (Did pedal test)...went back again to garage who replaced coil pack and plugs again....Seemed ok for a few days then started playing up again. Now comes up with 301 misfire cylinder one...however it usually only plays up when your poodling along in low rpm..1500-2500ish....If I drive accelerating it's fine, and there's no loss of power.
Garage had it again and investigated further. Did compression test, all OK. Checked injectors, all Ok. Swirl flaps were replaced last year by previous owner. The car has always burnt oil, so they said it was related to the misfire....so replaced rocker cover.
Had the car back and still misfires, but only when it's up to temperature and only with foot lightly on accelerator usually at low rpm.....It does it most if you accelerate hard then back off the accelerator.
The garage charged £90 for coilpack, but don't know if it's a genuine one...I guess not. So would a genuine Delphi coilpack cure this ???
Would appreciate any thoughts....car great otherwise.