Genuine 1998 Honda Passport Cylinder Head

1998 Honda Passport Cylinder Head Parts Questions & Experts Answers

• Q: How can the cylinder head be removed and reinstalled on 2.3L and 2.6L four cylinder engine on 1998 Honda Passport?

  A: The cylinder head can be lifted with the intake and exhaust manifolds still in place or pulled off with them if the reason for this operation is, for example, gasket replacing. First of all, it is necessary to take out the intake and exhaust manifolds, to drain the cooling system, and to take off the upper hose of the radiator. Next, remove the thermostat housing, remove the heater hoses from the rear of the cylinder head and intake manifold and then remove the spark plug wires and position it aside and then take out the spark plugs. Remove the accelerator linkage, fuel line hose and all wires as well as vacuum hoses connected to the ECM and mark them for ease of reconnection. On early models with a carburetor, first, remove the fuel pump, next, use the jack to lift the car and put it on jackstands and the last step, remove the exhaust pipe at the exhaust manifold. That way free the valve cover and intake also take the No. 4 piston to TDC, remove the camshaft sprocket as well if following the right procedure. If the service engine light is associated with an Air Injection System, then remove the AIR hose and or check valve that is mounted on the exhaust manifold. Place a new head gasket on the cardboard and sketch the cylinders and bolt pattern on it, and show the front of the engine, and drill holes for the bolts. Tighten and relax the ten cylinder head bolts gradually in 1 / 4 turn clockwise anticlockwise using a star pattern from both ends about the center, and collect the bolts in the cardboard tray which will be used to hold the bolts for retightening. As you will find pulling the head up exhausting, you can easily wedge it on wooden blocks and give it a gentle hammer to free it off, then remove the cylinder head gasket and put the head on wooden block also. To install, the mating surface of Cylinder head and block should be free from deposit, using gasket scraper, clean these with lacquer thinner solvent or acetone. For head surface look for any nicks or scratches on the mating surfaces and use a file for minor ones, but for heavy ones machine the surfaces. To the threads in the head bolt holes, chase with a tap and clean the bolts on a vise. Place the gasket over the dowel pin, if the No. 4 piston is not at TDC, then proceed to do the following: Slowly lower the cylinder head until it is placed properly on the engine. The cylinder head mounting bolts should now be inserted and fitted on the cylinder head and the threads lubricated with engine oil on the threads and underside of the bolt heads and then tightened as per sequence and in accordance with the recommended torque. The last thing to do is to bolt the camshaft sprocket and close the engine in the reverse order to the foregoing steps. Lastly, add coolant, change the engine oil and filter, then crank the engine to check for any possibility of leakage, and check the coolant level at the operating temperature, adjust the idle and valve clearance to cold specifications.