I have a 2003 Volvo XC70 that I just replaced the rod bearings and the timing belt. Before this it had compression of 145-150 but after it is as low as 50. The timing belt is aligned between the crank and the cams. Anybody have any ideas?

I am trying to replace the timing belt on my Volvo but I haven't been able to remove the nut on the crank pulley even with an impact gun. Anybody have any suggestions?

I just bought an 2003 Volvo XC70 with 107k miles. It has a vibration in the gas pedal above 20mph. This vibration is in drive and in neutral also. The tires are brand new. Any idea what is causing the vibration or how to narrow it down?