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WWW.CB750C.COM :: View topic - leak-down test issue

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jsob
Now you're talking
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Joined: Apr 07, 2010
Posts: 64
Location: Bar Harbor ME USA

PostPosted: Fri May 25, 2018 3:16 pm Reply with quote Back to top

my #3 is leaking into the cam chain tunnel. I have about a 17% loss there. Intakes and exhausts are fine: no air escaping into carbs or exhaust pipes. The other cylinders are fine at about 5%.
Does this mean bad gasket? What's the risk of running it this way?
Thanks

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holysmokes
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Joined: Jul 25, 2007
Posts: 36706
Location: ridge road springfield nova scotia

PostPosted: Fri May 25, 2018 4:31 pm Reply with quote Back to top

Head gasket

You could try and retourqe

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genesound
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Joined: Jul 24, 2007
Posts: 42396
Location: Studio City, CA

PostPosted: Fri May 25, 2018 4:39 pm Reply with quote Back to top

Quote:
What's the risk of running it this way?


It could get worse, and also could ruin the head and/or cylinder block.

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NMT - New Member's Thread, a Must Read, click here!!! - Information For New and Veteran Members.
Contains SITE RULES, how to enter required bike information in your signature, thread and picture posting...
Also some important DOHC wrenching tips, and some other information.
Kindly read this linked thread with the rules before posting
pictures or asking lots of questions that are already answered in it.

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For Honda Shop Manuals (FSM), Click Here.
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MacGregor Carb Rebuilding Manual, Click Here.
⊳⊳⊳⊳Learn to use the Search Engine Click Here.⊲⊲⊲⊲
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jsob
Now you're talking
Now you're talking



Joined: Apr 07, 2010
Posts: 64
Location: Bar Harbor ME USA

PostPosted: Fri May 25, 2018 7:12 pm Reply with quote Back to top

ok. I thought as much. Grasping for straws. It was only 2600 miles ago that I pulled the engine to deal with a burnt valve issue, so I was hoping against hope. For shits and grins I will try a retorque, but I guess I'm resigned to my fate. Better now than in the middle of a trip I'm planning next month. Thanks, guys

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mandatory
Getting up steam
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Joined: Dec 05, 2010
Posts: 15
Location: Los Angeles, CA

PostPosted: Thu May 31, 2018 10:11 pm Reply with quote Back to top

Any news?

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