st 24 hesitation at 3 k

[splatspeed]

hi my brother in law has an st24
and it has a flat spot at 3 k

it has new plugs and leads

is it likly the tuned ports or the injectors????

[splatspeed]

its a bad flat spot

but above 4 k it goes ok

what is an imrc?????

[splatspeed]

Dave_ST220 said:

I told you above!

thankyou

but IMRC is a FLA

i am trying to work out what the FLA is

thanks again

[splatspeed]

four letter acronym

thanks sean

[splatspeed]

it was the feul filter clogged