Complete Guide 2F Head Replacement for Toyota Land Cruiser
Part of content: The Diagnosis : No spark present in the cylinder. No spark present in the cylinder at the correct time. Low compression due to worn piston rings. Exhaust valve remaining open. A pressure gage was purchased (about $30) to check compression on all 6 cylinders. The following procedure was used: Remove all spark plugs. Remove coil to distributor wire. Removed electric fuel pump fuse (vehicle does not have mechanical fuel pump).
Put accelerator in full throttle. Connect gage to spark plug opening (screws in). Crank engine for 3 seconds and monitor max pressure reading. Do this on all 6 cylinders. Replacement Day : The valve cover was removed, followed by the rocker assembly, then the head bolts. The last 2 bolts were very difficult to remove (the last 2 on the drivers side, near the firewall). Upon removal, there was oxidation present. To prepare the block for the new head, the old gasket material was completely removed by scraping with a chisel.
