you are suppose to check and adjust the valves after the bike has been sitting overnight -stone cold for at least 12 hours.
but the other side is, dont worry about how it sounds when the engine is cold, ride it about 5 miles, and then listen to it.
The thing is, the tappets always tap, even when they are adjusted perfectly. Thats why they are called tappets. When the clearance is too wide the tappa tappa gets louder, which is not great but its ok.
The thing you have to watch out for, is if the tapping goes away. Then the clearance has gone to zero or less, and the valves could be staying slightly open. This is only for engines that do NOT have hydraulic lifters.
Hydraulic lifters are suppose to adjust in perfectly - no tapping and no gap while the engine is running (after a few minutes).
If your bike has lifters and they are tapping, one of them has failed. I have never seen an engine with hydraulic lifters that had an adjustment - that is new one on me.
On the oil pressure, if you are going to test it, you would have to put a gauge on it. I dont know if there is a fitting for an oil pressure gauge or sensor anywhere. Gear mesh oil pumps should last for the life of the engine. If you have low oil pressure its because your bearings on the crank, throw rods, or cam shaft are worn out, and the gap is too big, letting the oil flow thru without building up enough pressure. They usually only show low pressure at idle, but that can be enough for the cam bearings at the top of the engine to get oil starved, because the oil is blowing thru on the main crankshaft bearings.
Last edited by KCW; 07-24-2018 at 05:20 PM.