Hi everyone, my PH1 TS has developed a really annoying fault and my usual mechanic is scratching his head over it
When cold she runs ok but is a bit sluggish at anything over 3k but when warmed up she struggles to get over 2.5k and just dies. There's also a loud hissing noise under acceleration that's proving very hard to trace as she only makes the noise under load.
The engine revs freely and the issue only appears under load.
I did have some holes in the air pipe but I fixed them with no change, my mechanic re-fixed them as well with no change. Also the induction pipes have been checked but no one can find where the bloody air is being sucked in from
Fuel usage is just slightly worse than before and I've tried running with the air flow sensor removed. This caused tick over to be much rougher but made no difference to the problem (I assume this means the air flow sensor is ok??).
If anyone can help It'd be much appreciated. She's not worth much so I don't want to throw a load of money at her but I do love her and would hate to have to scrap her.
forgot to add there's no fault lights showing but the injector light sometimes flickers when she bogs down.