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I recently did his with an engine on a stand in a well lit comfortable garage with all the tools and equipment. Awful !
1. the old hoses are very hard+brittle. This makes moving them into alignment very difficult.The consequences of a small crack/leak will drive you nuts with faults and problems
2.The old AOS connection used an "0" ring. This O ring swells slightly with oil+heat. When you try to refit ,the clip will not quite snap closed. Do not try force it ! Remove the old O ring an replace it with a new one Works just fine then!
3.The seal on the newer AOS is different. That may be easier ? The new seal looks like a sleeve on the AOS ,not an O ring in the hose. So figure out what you have first?There are some useful Youtubes on this.
4.Scrupulous cleanliness and a little Vaseline seem to help.
5.Be careful and patient because removing old cracked hoses and threading through new ones in such cramped conditions is difficult for a noob. I have no idea how anyone with large hands could do this.
6.Be ultra cautious about damaging other vacuum or electrical connections. There are many obscured ones buried underneath the inlet manifolds.
7. Ask for a referral to an Indie in your area?
8. Allow lots of time if you diy and have a backup plan in case any of the above happens
Good luck !Forewarned is forearmed
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