RV10inOz
Well Known Member
Is there an ongoing issue with Inlet manifold gasket failures.
We started with a brand new Lycoming IO540, at 248 hrs 5 out of 6 had cracked and were leaking badly (runs rough too).
LAME (A&P) replaced them while a/c was out of town and we have been checking torque every 50 hours, no issues there.
Now at just over 1 year and another 248 hours (yes hard to believe) we are potting the tell tale fuel dye stains and a couple of pops in the exhaust. Visual inspection suggests 2 are cracked, and we will see this week when we replace them all again.
It is not a big job to do every 200 hours, but it does seem rather odd.
Anyone else seen this? If not maybe you should all take a closer look
PS: These were genuine Lycoming gaskets, the next lot will be Superior (red in colour)
We started with a brand new Lycoming IO540, at 248 hrs 5 out of 6 had cracked and were leaking badly (runs rough too).
LAME (A&P) replaced them while a/c was out of town and we have been checking torque every 50 hours, no issues there.
Now at just over 1 year and another 248 hours (yes hard to believe) we are potting the tell tale fuel dye stains and a couple of pops in the exhaust. Visual inspection suggests 2 are cracked, and we will see this week when we replace them all again.
It is not a big job to do every 200 hours, but it does seem rather odd.
Anyone else seen this? If not maybe you should all take a closer look
PS: These were genuine Lycoming gaskets, the next lot will be Superior (red in colour)
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