I noticed to day that while i was travelling at about 80mph in top gear then proceeded to put the pedal to the floor the power delivery seemed to dip and then pick up and then dip again,and basicaly struggle to climbe the rest of the rev range.Then ive tried it again and its powerd from 80mph all the way up to 135mph and was pulling strong ,but it seems to be an intermitant problem. Any idears.

 

could be anything man .but; you may try some gas line anti freeze. when mine starts with the ocasional weirdnass this helps. it's got something to do withthe ethanol holding on to water molecules ,creating globs of water , which when not mixed well with gas won't burn well . or something like that .if it's a plasebo who cares . it's a cheap one .

 

were you spraying? or was this just toolin around? did you notice any weird boost levels when acclerating?

just trying to X out some options to better diagnose the problem.

I was thinking maybe belt slip..........but........

 

No not using the spray with this engine ,going to remove it.belt is a new jcw one. havent got a boost gauge but something isnt right

 

clutch okay?

 

I think it might be slipping ever so slightly under load,I might of glazed it as its a new one not old and worn out