Poor starting after service and cam gasket change

invalid@example.com (Trevor /chedder), Trevor /chedder
Sun, 19 Nov 2023 12:11:06 +0000

Hi all.
Serviced my car,new oil, filter and air filter. Also changed the cam cover gasket, to fix a minor leak.
Today after a 5 mile drive. Restarting took quite a lwhile, which has never happened. Any ideas?