engine hesitating to drop down a gear at 60kmH HELP..

[BIG-EV]

hey my car is having troubles dropping gear 3 to 2 and probs 1 at 60km/h... It had an auto rebuild last November with a stage 2 shift kit added with a corvett servo. i dont know if its the transmissions fault or the engine.. it hesitates and jerks a bit.. but at 70 or 50km/h its great.. Also my car chewing fuel like a bitch glug... engine oil is fine and noo mess around the heads for leakage.. it used an 1/8 of a tank just to asply and back from redcliffe last night which is roughly 30-40ks and that was just nice cruising driving.. I think its running too lean.. any ways to fix that?

 

[Simonn]

it would not be running to lean if its using too much fuel it will be running to rich. Have you given you TB and the air flow sensor a cleanout latley? How are the spark plugs and leads?

 

[BIG-EV]

yer all clean inside.. and new sparkies and cables 3 months ago.. sparkies look still new, no carbon on em just a very fine white coating. at medium revs 3000-5000 there is a tapping noise coming from the rear of the engine.. anyone?

 

[BIG-EV]

also how do u stop a window rattle on a VT? my rear ones rattle a bit and its pissing me off