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04-09-2020, 10:46 AM | #21 |
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Location: new britain,ct 06052
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Re: Borescope results - diagnosing cylinder, exhaust leaks
On MMO, I used to go glug, glug,glug, glug. Won't hurt anything. I also am using it in my new to me 40.
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04-09-2020, 10:46 AM | #22 |
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Location: Red Deer, Alberta
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Re: Borescope results - diagnosing cylinder, exhaust leaks
Have you checked the valve lash yet?
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04-09-2020, 10:58 AM | #23 | |
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Re: Borescope results - diagnosing cylinder, exhaust leaks
Quote:
Last edited by alexiskai; 04-09-2020 at 11:05 AM. |
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04-09-2020, 03:07 PM | #24 | |
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Location: now Kuna, Idaho
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Re: Borescope results - diagnosing cylinder, exhaust leaks
Quote:
You're probably tired of testing, but but here's two quick and cheap (free) ones. If you suspect bad rings on one cylinder hold a piece of cellophane wrap loosely over the oil fill tube with the engine at slow idle. If there's blow-by you will see rythemic "puffs" against the cellophane. Next, hold a shop rag loosely against the tailpipe. A bad exhaust valve will alternately puff the rag out, then suck it in. Where I worked we had a fleet of early 2000's Dodge pickups that suffered from exhaust valve seat recession. It got so when one came in with a rough idle, first thing I'd hold a rag by the tailpipe. Some were so bad the rag would get sucked almost completely in, then puffed back out. 30 second diagnosis! |
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04-10-2020, 01:36 AM | #25 | |
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Re: Borescope results - diagnosing cylinder, exhaust leaks
Quote:
Not that hard, i took off the cover, wound the engine over by hand until #1 exhaust valve was all the way up, then it's time to check #4 exhaust valve clearance. A folded sheet of paper should be enough clearance. For #2, #3 valve should be all the way up.
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04-10-2020, 10:31 AM | #26 |
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Re: Borescope results - diagnosing cylinder, exhaust leaks
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https://www.brattons.com/files/index...id/1418137753/ Read that and you should be able to figure out how to remove the side cover w/out any problems. When you remove the side cover be prepared for some oil to come out.
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04-10-2020, 10:45 AM | #27 |
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Location: Mebane NC
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Re: Borescope results - diagnosing cylinder, exhaust leaks
Thank you. Looks like the key is to remove the filter itself first, and then detach the tube from the cover via the external nut, rather than trying to remove the cover with the filter still on it.
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