Hi guys just a quick question. Allow me to explain my problem:
I know the 304 is a fairly old motor, and especially mine when it's done 275xxx kms. However still I think it should have more power than I am experiencing. I've noticed it since I've had the ute.
The problem is the throttle seems unresponsive and there is very little power anywhere under 3000rpm. Well not very little, but not really throw-you-back-in-the-seat stuff. My old VS V6 ecotec seemed to be very snappy and would spin the tyres in 2nd around most corners if you stabbed it; granted it did have an open diff and it would run out of power after a few gears but the Maloo is a lot more reluctant to go when you put the foot down.
One thing I've noticed is there is a fairly decent dint in the bottom of the extractors where the previous owner has obviously hit something. Would this restriction in exhaust diameter have anything to do with this? I know it wouldn't help the power but haven't thought of it that much. Is there anything else I should check or is it simply the same old "plugs, leads, clean sensors, replace injectors and fuel pump etc etc."? I've heard you can restrict the return fuel line to build fuel pressure to see if your pressure is low and hence the fuel pump is on its last legs.
Any ideas and suggestions would be good.
Cheers!