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- #441
That's very unusual, for only six months.I did a compression check 6 mo. ago and tightened all the plugs to spec. Had an ignition coil fail last week, replaced it, and saw that the spark plug appeared to be under-tightened (not the cause of the coil failure - that was due to age).
Today, I checked all 8, and 3 more were more-or-less finger tight. I tightened all to spec (and a little bit more). I heard no ticking sound, but clearly 4 of my 8 plugs were somewhat loose. Worth checking this from time to time.
Which make spark plug?
Was this engine, cold started two or more times each day?
What torque did you use, after compression test?
I seen a few, where plugs were not actually torque down. I can only make this call, if crush washer not crushed.
FWIW: I do all assemblies with torque wrench. I paint every nut & bolt after torqued. But with plugs, I've not been painting. I toque each, after snugging before moving to next plug. I may, change that up. To painting a mark at top of spark plug tube. Then, distraction will not result in a no torque.
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