I think jet washing the engine bay is a bad idea, it will force water under high pressure past the waterproofing into any electrial plugs you go near where it will stay and start corroding and give problems in the future.
You'd be much better off with a hand spray degreaser a stiff brush and a watering can of hot water
Wow ok guys think I get the idea! But over the 20 odd years I've been driving and I have owned a fair few cars I've more leas jets was everyone and had no issues at all.. I was only asking this time as this is my first diesel
Lol, funny responses guys.
Yeah you need to be really carefull of the ignition system on a diesel... don't want to get the distributor wet... :thumbup: https://youtu.be/qr8eEWyKQHM
Truth is that diesel engines and modern electric plugs are much more resistant to water.
Like Scotty said, it's just like making love... it's all in how you do it!
And from your past experience RC you will be fine. Just don't direct blast the computer components.
If i hadn't seen dozers being operated by men in scuba gear moving earth underwater, with my own eyes, i wouldn't have beleived it.
Sorry for me unless your engine is caked in fresh warm mud, its a dam lazy way of cleaning your bay. I detail my cars and engine bay, having had show cars in the past. But blasting water in there is such a bad idea whatever and however you do it...Especially an Alfa where metal quality is good awful. Just take off your engine cover and get a rag and work your way round it. ;-)