ПАЗ-672М 1986г.в. Первый запуск спустя 7 лет(the first engine start after 7 years)

Starting the engine of the soviet PAZ-672M bus in 1986 after 7 years of downtime. I bought the bus in Sevastopol, it belonged to JSC "Sevtelecom". His last trip was in 2014. Then the bus stood in the parking lot for 7 years. First of all, I checked all the wiring for the absence of a short circuit, unscrewed the candles, examined them, poured oil from the syringe into the candle wells to raise the compression and facilitate the start. I replaced the drain tap of the cooling system. Then I examined the fuel system. I replaced the fuel hose from the filter to the carburetor(cracked), the fuel fine filter, washed the coarse filter. When trying to pump fuel with the pump foot, the fuel did not enter the carburetor, the pump itself is serviceable. Most likely, the fuel line from the gas tank to the coarse filter is clogged, I will blow it. I started the fuel line from the gasoline canister. Then I poured water into the cooling system. There were no global implications. I checked the oil level in the engine-at the highest risk, the fluid in the power steering pump is normal.