codes , and misfire

[graeme cook]

Hey all, nice trip out on sunday and i get a few problems , came home and on the code reader i found
FUEL TRIM BANK 1 P170
FUEL TRIM BANK 2 P173
MISSFIRE ON 1 , 3 & 2.
No lights have lit up on the dash.

So hoses , coil packs and ox sensor?

 

[Zephyr]

Why throw money without a proper diag?
reset, and get the machine to read live data.
first check smooth running values on a warm engine.
cylinder readings should be even or not deviate more than 10 per cent from each other.
if any cylinder is reading thousands or has a an absurd number swap coil and check again.
this eliminates or brings out coil issues (or bad spark plugs - that should be torqued to about finger tight and then some more with the wrench or to be accurate not over 25)
then have a smoke test to check hoses, replace if needed check also valve cover gasket
finally unplug ox sensor and start engine - take reading
put back
unplug maf start, rev, switch off
plug and start again.
if still no engine light (there should be) then put some high octane and ride it like you stole it up to third gear.

 

[AntStark]

All sounds like a vacuum leak to me. Had same codes when my valve cover gasket gave up
What engine is it?

 

[graeme cook]

Cheers guys , its a 2.0 6cyl

 

[graeme cook]

I'm still struggling with the trim code thing and misfire , is there any z3 specialist around the north west i could get it in ?