Is it possible to change out the cylinder heads with out removing the engine on a '05 E250 4.6L cargo van? If not is it easier to remove the motor through the front or lift the cab from the chassis?

SOURCE: 95 e150 ford cargo van heater core replacement

yes it can be removed from inside the cab and no you dont empty the ac system

SOURCE: 95 e150 ford cargo van heater core replacement

buy a manual for 10 bucks

Greg Bernett

• 2993 Answers
• Posted on Nov 13, 2009

SOURCE: cylinder head removal on 2005 nissan altima 2.5

CYLINDER HEAD REMOVAL

2.5L Engines

1. Before servicing the vehicle, refer to the Precautions Section.
   
2. Drain cooling system and engine oil.
   
3. Relieve the fuel system pressure.
   
4. Remove or disconnect the following:
   
   • Negative battery cable
     
   • Upper radiator hose and heater hose
     
   • Right side fuse/relay box and move aside
     
   • Engine undercover
     
   • Resonator and air cleaner case
     
   • Engine top cover
     
   • All electrical and vacuum lines at the head
     
   • Fuse hose quick connector at fuel tube side
     
   • Engine harness and power steering hose bracket
     
   • Timing chain
     
   • Drive belt tensioner
     
   • Camshafts
     
   • Spark plugs
     
   • Exhaust manifold
     
5. Support the engine from above and below with a suitable jack and hoist.
   
6. Remove or disconnect the following:
   
   • Power steering pump and reservoir and wire aside
     
   • Auxiliary drive belts
     
   • A/C compressor and wire aside
     
   • Upper sway bar links
     
   • Front and rear engine mount through bolts
     
   • Lower ball joints
     
   • 2 steering gear housing mounting bolts
     
   • Front suspension member bolts and front suspension member
     
7. Loosen the cylinder head bolts in the sequence shown and remove the cylinder head.
   

1. Clean the gasket surfaces.
   
2. Using new head gaskets, install the cylinder heads.
   NOTE If possible, replacement of the head bolts is suggested.
   
   
3. If replacement of the head bolts is not possible, perform the following bolt measurement:
   
   • Measure the diameter of the head bolt 0.43 in. (11mm) from the bottom of the bolt.
     
   • Measure the diameter of the head bolt 2.17 in. (55mm) from the bottom of the bolt.
     
   • Whenever the size difference between the 2 measurements exceeds 0.0091 in. (0.23mm) the head bolts must be replaced.
     
4. Apply clean engine oil to the bolt threads and seating surfaces and tighten the cylinder head bolts in sequence as follows:
   
   • Step 1: 72 ft. lbs. (98 Nm).
     
   • Step 2: Loosen all the bolts completely.
     
   • Step 2: 29 ft. lbs. (33 Nm).
     
   • Step 4: Plus 75–80 degrees clockwise.
     
   • Step 5: Plus 75–80 degrees clockwise.
     
5. Install the front suspension member and tighten the bolts to the specifications shown in the illustration.
   
6. Install or connect the following:
   
   • 2 steering gear housing mounting bolts
     
   • Lower ball joints
     
   • Front and rear engine mount through bolts
     
   • Upper sway bar links
     
   • A/C compressor
     
   • Auxiliary drive belts
     
   • Power steering pump and reservoir
     
   • Exhaust manifold
     
   • Spark plugs
     
   • Camshafts
     
   • Drive belt tensioner
     
   • Timing chain
     
   • Engine harness and power steering hose bracket
     
   • Fuse hose quick connector at fuel tube side
     
   • All electrical and vacuum lines at the head
     
   • Engine top cover
     
   • Resonator and air cleaner case
     
   • Engine undercover
     
   • Right side fuse/relay box and move aside
     
   • Upper radiator hose and heater hose
     
   • Negative battery cable
     
7. Fill the cooling system and engine oil
   
8. Start the vehicle, check for leaks and repair if necessary.
   

SOURCE: We are replacing a head gasket on a 2001 Olds

It is a tight fit, but it can be removed if you remove the 'shelf' above the engine that houses the wiper assemply, and I have seen people lower the engine by unbolting the cradle-put a block of wood between the jack and the engine/transaxle, and unbolt the cradle bolts, lower it so you have enough clearance to pull it out (works on both 3.5 and 4.0 motors, it really helps to have 2 people to do this-also, if you haven't don it yet.scribe the bolts and slots on the hood bolts and remove the hood, make your life much more enjoyable.

SOURCE: 1991 Daihatsu charade, 3 cylinder, manual, engine

I had this problem too. There is a restricting jet hammered into the block to reduce the oil flow to the head and increase the pressure to the main bearings, so the only place the oil pressure is higher than the water pressure is in the block. Apparently this is a known problem with the 3 cyl CB engine. The block is cracked. Greg