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Reverse Thread Chaser Advice Needed – W126 560SEL
Hello all,
Doing a full-blown major tune-up plus new ignition coil on my 1986 560SEL this week and have run into a bit of a snag – the spark-plug on no.8 cylinder fought me all the way out despite using generous amounts of penetrating oil. Thank goodness no threads came out and a visual inspection of the bore with a dental mirror and flashlight reveals no visible thread damage. Spark-plug threads perfect. The only indicator that something might be amiss is a slightly higher amount of gray aluminum powder + oil gunk on the threads near the crush washer. To the point – which is the14mm reverse thread chaser should I use to clean things up a bit before proceeding further bearing in mind that no.8 is a tight one in terms of accessibility? Your opinions & experiences would be GREATLY appreciated! Cheers! |
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