my xr2 turbo wont start when its hot and been left for a while? starts fine from cold though? and it holds back at about 5000rpm under load?

 

when you say holds back at 5000rpm under load do you mean it misfires ? Could be injectors or fuel pump or the metering head

 

it doesnt misfire it just wont rev past it?

 

just had this problem on my s2 changed nearly everything and after spending around £1000 it turned out to be the valve springs. Mine wouldnt pass 5000rpm either and it sounded like it was popping popcorn at 5000rpm dont know though if this could be the same problem has yours.

 

ive just had a kent cvh37 cam put in and it comes with double valve springs and anti pump lifters so doubt its that! if i use light throttle it holds back lightly just before it comes up on boost 2?

 

could be fuel pump then rather than injectors

 

When was the last time you changed the fuel filter? Is the fuel pump ok?

Possible charge air temp sensor..

 

rite guys it tryed it again today and when it comes up on boost in second it pulls hard till 5000pm then holds back if i change gear quickly and still using full throttle it wont pick up at all so am i rite in thinking maybe fuel volume isnt enough???

 

Dunno. It want's diagnosing properly to be honest.

Get it checked for fuel pressure and air to fuel ratio on a wide band lambda meter while on boost.