Important! : saxo 2000 furio

9th May 2010, 12:15

hi got a saxo furio with a misfire, so i check all the engine sensors with a snap on scanner and they are all working,so i changed the head gasket and its still running shit. just wondering wat to do next ?

9th May 2010, 13:48

tbh, with a misfire, the first thing u wanna be checking is your Plugs, HT leads and coilpack, as all 4 cylinders run off of one coilpack on your engine. Sometimes they can be prone to 1 half of the coil breaking, reculting in 1 and 4, or 2 and 3 misfiring, and OBD scanner wouldnt pick up a misfire as an engine fault unless you also used the Data List function to show your misfire count. I'd be checking those first.

9th May 2010, 14:15

cheers ill try that

9th May 2010, 15:00

after checking all ignition units if you dont find anything you need to do either a 'Pressure test' or a 'Leakage test' on each cylinder

9th May 2010, 16:40

i did a pressure test and that was fine

10th May 2010, 18:00

just check the coil and its working fine but its still misfiring and blue smoke is coming from the exhaust

10th May 2010, 21:00

Blue smoke is head gasket is it not?

Check coil pack

Spark plugs

Injectors

Reset ECU leave battery off overnight.

Is it definitely misfiring or is it air/fuel bad mixture as this could lead to ICV, map sensor, temp sensor.

19th May 2010, 21:24

changed plugs so they are fine
the coilpack is working fine and so is the injectors
map. temp sensors are fine
so wondering whether to clean the idle control valve