hmm , well im not thinking the warm-up compensator is it .... aka cold start valve ? Because its fine starting cold .

Regulator or check valve maybe then .

Im going to buy a fuel guage . Is there a fitting on the fuel inj to test pressure ? Whats the correct pressure ?

Oh ....

accumulator (pressure reservoir) where might this be ?

system pressure valve .... where is this ?

Just a few easy questions for ya . Thankyou .