Dirty dirty MAF
Seemed to be having dirty MAF problems again as well as distinct lack of overall power, but I'd only just cleaned it 2000 miles ago. Took air intake system apart and guess what I found?
1. Hole about 2cm across in the bottom of the air filter box, just off centre, so some air going thru filter but large proportion completely bypassing filter!!!. No idea how hole developed - doesn't look cracked and no obvious wear point underneath? To be honest it looks as though its always-been-there sort of hole! Repaired with thick plastic card sheet glued in with instant gasket.
2. Big split -3cm, in underbelly of elbowed rubber tube that connect sresonator to the throttle body. The split was just in the concertina bit of the right angle. Car had been running on weak mix - no wonder there was no power! And throttle body was filthy! New part to collect tommorrow. I suspect oil collects in the concertine ridges and causes rubber to harden and crack.
Temp repair with instant gasket again!
Running much smoother and more urge.