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no gasket sealant needed. Just original gasket is fine.
No. You need to remove the head(s) and have the head(s) checked for cracks and straightness, then install the head(s) with new head gaskets. Most head gasket manufactured are assembled dry, no sealants.
no u dont need to use sealant u should get a gasket
If both surfaces are clean and flat and you are using a new gasket, no sealant is necessary.
I believe that if a gasket is employed, then the need for gasket seal in a tube is gone, however, your gasket should be torqued to manufacturer's specifications. Yet, it doesn't hurt to have both.
The ONLY reason a head gasket fails is because the pressure between the head and the cylinder block is not even across the entire surface. That condition typically occurs when an engine has been overheated and the head tends to warp just slightly. When the head gasket fails, you'll need to replace the gasket, but you'll also need to have the head "resurfaced", meaning that a qualified machine shop will need to shave a couple thousandths of an inch from the surface, making the head "flat" again. NEVER replace a head gasket without having the head resurfaced. The head gasket is likely not the cause of your filure. The head itself will be cracked by the #4 cam jouirnal. Remove the rocker cover and you will see a clean spot where the crack is Saturnguy
No, only a dab where a seam may meet.
You need the sealant on the ends where the supplied gaskets don't cover fully.
usually, a head gasket kit will come with: head gasket rocker cover gasket valve stem seals camshaft seal/s an extensive kit may come with bolt seals, & o-rings for around the sparkplug entrances(on the SR engines, not the GA engines not sure on any other engine series they may have been released with) & various orings for breathers etcetc. but that will depend on the brand of kit, & how much you are prepared to pay. sometimes it is cheaper to buy only the gaskets you need, i.e a head gasket, but if you are doing that, its a very good idea to replace the camshaft seal/s & rocker cover gasket also, better to do them now, than in a months time. unless your head gasket is not a monotorque(fit & forget, much better option, dont need to re-torque them after 1000k)
You do not need to add a sealant to the gasket. Just make sure you torque the bolts to factory specs.
You will need to remove the cylinder heads. Remove the old head gasket and clean the head gasket surface. Put the new head gasket on and reverse the process.
You have a blown head gasket or a cracked head. STOP driving this car immediately or you will do serious damage to the engine. It will need the gasket replaced and the head checked.You have a blown head gasket or a cracked head. STOP driving this car immediately or you will do serious damage to the engine. It will need the gasket replaced and the head checked.