Still misfiring

[mogzyvts]

Hello there I've got a phase2 saxo vts. I've got a misfire problem at 3k rpm. I've replaced the coil pack which had a crack and changed the plugs which where well gone but the problem remains. I've also cleaned the icv. It doesn't over heat or smoke but seems to idle fine.

Cheers.

[stevo67]

Blocked injector/s

[tom_vts16v]

had a similar issue with mine i put new injectors in and was still the same i also had a flat spot between 4-5 k i put a 4.0 bar fpr in and all is well

[mogzyvts]

I am going to try fix it myself. Can't afford garage fees no more. Can I test to see if one is down or is it a case of buy new and see.

[tom_vts16v]

you can take injector rail out and turn ignition on to see if there is one not spraying but if miss fire is only at certain rev i should say the injector would be ok try a 3.5 bar fuel pressure regulator see if that sorts the problem

[mogzyvts]

If I want to get to the head gasket. Are the head bolts the ones sort of under the cams. 5 on each side. I'm not flying in just yet don't worry lol.