Lot of things can cause a lack of power to engine. PCM and ground wiring to PCM could be bad, fuel pressure may be restricted, engine coolant temperature sensor, throttle position sensor, MAP sensor etc. Is the engine light on? For the head gasket, just because oil is not leaking doesn't mean anything, in fact usually the oil would increase due to coolant mixing into it.
SPONSORED LINKS
Wednesday, May 26th, 2010 AT 7:08 PM