Question about 1998 Volvo V70
Engine started tapping is it a valve gone
Hi, if the tapping is coming from the top half of the engine then the chances are it will be one of the hydraulic lifters that operates the valves the chances of a valve been gone is pretty slim if it was a valve your car would start to miss fire.
These lifters can be replaced and it is quite a big job to do. But getting it done sooner rather than later could save you alot of money just in case it does cause a valve to break this could cause you to have a seized engine and might need new engine.
The lifters themselves might be able to be adjusted but this would need to be done by trained mechanic as it takes exact measurements to find out the right lifter to adjust and thats if their is room inside the lifters to adjust them slightly. If not then you will need to have all the lifters replaced as to get the one out you need to be able to get to all of them. Its difficult to tell for sure witch one is playing up so this is why they replace them all.
On older cars you used to be able to adjust them with spanner and screwdriver but they stopped making them like that because they was un-reliable and was always noisy so instead of a spring type valve they use hydraulic ones now witch all cant be adjusted this would need to be checked.
Let me know how you get on or if you need further assistance ok
Posted on Aug 25, 2009
Most common problem on these is the seal around the oil pickup tube starts leaking or has broken away. Removal of the oil pan is necessary. The dealer sells a kit that has all the seals in it you will need minus the liquid gasket for the oil pan, its and anerobic sealant, DONT USE SILICONE, IT WILL LEAK
Posted on Aug 26, 2009
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Posted on Jan 02, 2017
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