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Back together and running at full power. Mowed pretty high grass with ease. After market cam intake lobe was worn off to almost round. Found some silver sludge in the bottom of the crankcase from the lobe. Fresh oil and filter and all seems well. I did put the OEM carb back on.

I will check valve/rockers when I put it back together. Got the OEM camshaft. Looks like an upgrade and came with new tappets. Too bad the crankcase gasket has been delayed a few days. Guess I will just hang out watching the grass grow.

After looking at some bad camshaft reviews on Amazon, it seems several people had worn lobes after anywhere from 20 hours to a couple years. I just ordered the OEM camshaft. I don't go cheap on replacement car parts, guess the lawn mower is no different...live and learn.

Just did a leak down test and there were NO noticeable leaks! I did notice the exhaust valve gap was a little loose. Decided to roll over the engine and check both gaps. To my surprise the exhaust valve had about 1/4" travel HOWEVER the intake valve had almost NO travel. I tried to measure with...

Just ordered a Leak down tester on Amazon. I will have it late next week and will let you know what I find.

I know a compression test would tell the condition of the head gasket however I assumed the compression release on the cam would prevent getting a good reading.

Mower is a Troy Bilt Bronco 42" Model# - 13AL78BS023 I will check for pressure from the PVC hose. Thanks.

I have a 4yr old INTEK that is slowing loosing power. (Engine Model #33R877/0008-G1) New camshaft - 10/27/23 which fixed the broken compression relief. Seemed to run great after I put it back together. After mowing six times this year I have low power and it is getting worse. What I have done...