Spark plugs tight
Posted: Sat Mar 03, 2018 5:35 pm
The spark plugs on my 1.8 1998 petrol engine (AFT) seem to become tighter with time, despite being torqued correctly and having their threads cleaned. The plugs are VW/Audi 4-terminal types. When I first got the Passat I decided to remove the plugs and see how they were - and they were dramatically tight and remained that way for most of the unscrewing process. I torqued them in and a couple of days ago decided to check / clean them if required as some time had passed - they were tight again and hard to remove. Cleaned / re-torqued again to 20NM - as recommended. Any ideas?