Head Gaskets and Valve Covers

Labor around 500.00 plus cost to repair head or replacement, plus gasket set (100.00-give or take)

The head torque specification for the Yanmar 4TNV98 engine is typically around 70-85 ft-lb (95-115 Nm) for the cylinder head bolts. It's essential to follow the manufacturer's specifications and sequence when tightening to ensure proper sealing and engine performance. Always consult the engine's service manual for the exact torque settings and procedures.

Depends, if only the gasket is blown. The head may be warped or cracked. Hard to give you a price because it also depends on where you live and who does the repair.

On some vehicles, yes.

besides burning yourself, the antifreeze can burn you too. But never try and undo headbolts on a dead cold engine either if you can help it. Room temperature is best to 100 degrees. Bolts can really seize at low temps and besides burning yourself good i know of know other reason .

100 inch/pounds

The torque settings depend on the amount of pressure being exerted on an object to make it function.

Yes, that is possible. A blown head gasket will destroy the engine.

Normally it will only smoke after is has sat for awhile and then started.

if your talking about the oil seals that go around the valve stems, you can do it with some specialized tools. But if your talking about removing the valves which include the stems then your going to have to pull the heads to get them out.

Depends, can you change it out yourself. Rangers come with 3 different engines from 4 cyl. to 4.0 v-6.

Loss of coolant with no apparent leak, white smoke from the exhaust, overfull oil level, a white foamy substance on the underside of the oil fill cap, engine overheating, and possible engine miss.

Yes, that is possible. But, know that if you have a blown head gasket you will do serious engine damage if you continue to drive the vehicle. You need to have this looked at by a trusted mechanic. Do not continue to drive the vehicle.

Skimming a cylinder head involves machining the surface to create a flat, smooth finish, which can improve sealing and performance. First, remove the cylinder head from the engine and clean it thoroughly. Then, use a milling machine or a specialized cylinder head resurfacing tool to remove a precise amount of material from the head's surface, checking for flatness with a straightedge or feeler gauge. After skimming, ensure all surfaces are clean before reinstalling the head with new gaskets.

since you are not stating what kind of engine or auto your working on, kinda hard to say. Each chevy, ford, etc has it's own procedure on tightening head bolts. I recommend you get a service manual and follow there torque sequence instructions.

do it yourself $ 150.00 and a lot of work. Shop $ 700.00 to $1200.00

Air in cooling system. Bleed the system.

Thermostat installed upside down or it is defective. Replace the thermostat and install it spring toward engine.

Cracked head. Head should have been inspected by a machine shop.

Head bolts not torqued to the correct factory torque specifications and gasket blew again. Check the torque and if they are loose you will have to do it all over again.

Water pump or cooling fan defective which was the cause of the overheating and gasket blowing in the first place. Check cooling fan for proper operating. Check pump to see if it is actually moving coolant throughout the system.

Yes, always install new head bolts.

it sounds like sperm head