2001LC
SILVER Star
For sure they're not factory installed spark plugs. So at minimum your now on third set.Tearing into this valve cover job more and replaced the spark plugs... boy were the old ones hard to get out! They all had rusty threads, I was worried about the head they were so hard to turn. Thankfully they all came out and fresh ones are in the engine. Not sure how old these are?We have only had this cruiser a year. View attachment 2616670
Spark Plugs I find the most difficult to remove Are ones anti-size used on threads. Stuff get cook into thread as plugs start walking out or not torqued in. Stop them from walking out, but not worth the risk of damaging heads.
I use one or two gas tanks with 44K to help free these up. One rig took three tank with 44k, and penetrating oil in spark plugs tubes. I end up uses a 3/4" breaker-bar w/3/4" fat extension I call "big boy". Could not believe, I was able to use that much force, without damaging heads. I spent 8 hours over 4 wks, coming back time and time again working them out. Each time getting 1 or 2 more spark plugs out. What a battle it was.
Same engine, I found all intake manifold bolts loosen on one side and some on other. So was DIYer with best of intention. Just poor procedure.