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December 3rd, 2006, 06:53 PM
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#1 (permalink) |
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Junior Member
Join Date: Dec 2006
Posts: 5
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Blowing Oil
Hope someone can help. I have a 455 in a jet boat which is blowing oil out of the dip stick tube. Any suggestions?
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December 4th, 2006, 06:45 AM
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#2 (permalink) |
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Registered User
Join Date: Jun 2006
Posts: 503
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455 oil
Check PCV to make shure its not clogged ,Are you useing a breather type oil cap?
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December 4th, 2006, 06:54 AM
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#3 (permalink) |
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Hot Rodder at heart Administrator
Join Date: May 2004
Location: Lees Summit MO
Posts: 5,360
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What is your oil quantity and what size pan are you using?
Also, try this or other threads at that site. good stuff. http://72.22.90.30/phpBB2/viewtopic....ht=blowing+oil
__________________
Dan '77 Cutlass Supreme '46 2 door "The rocket 455.....it's a sledgehammer approach to a thumbtack world" LuxBlue of HAMB. |
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December 4th, 2006, 07:04 AM
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#4 (permalink) |
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Junior Member
Join Date: Dec 2006
Posts: 5
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I check the PVC and replace it.It has a 10 qt. oil pan on it.It idles and start
great.but once you throttle down on it,thats when oil comes out of dip stick. No smoking. |
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December 9th, 2006, 08:26 AM
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#5 (permalink) |
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Junior Member
Join Date: Dec 2006
Posts: 5
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Would a Blown head gasket cause pressure build up in the lower end.
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December 9th, 2006, 11:56 AM
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#6 (permalink) |
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Registered User
Join Date: Aug 2005
Location: Henderson, Nevada
Posts: 53
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Sounds like you're getting blowby past the rings. Try a compression check to verify. Good luck.
__________________
1966 Olds Delta 88 Convertible 2004 Dodge Hemi Ram 2002 Kawasaki Vulcan 1500 FI |
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December 9th, 2006, 03:13 PM
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#7 (permalink) |
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Junior Member
Join Date: Dec 2006
Posts: 5
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When I do a compression check what I am I looking for????
Blown head gasket or Broken ring? |
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December 9th, 2006, 04:01 PM
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#8 (permalink) |
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Registered User
Join Date: Aug 2005
Location: Henderson, Nevada
Posts: 53
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Remove all the plugs, check compression in all cylinders & write down the results. Low compression in adjacent cylinders usually indicates a blown head gasket. If readings are low overall, add a tspn of motor oil to each cylinder as you re-check the compression. An increase in compression indicates worn rings, no increase indicates worn valves.
A blown head gasket can sometimes cause oil in the radiator or water in the crankcase. Good luck.
__________________
1966 Olds Delta 88 Convertible 2004 Dodge Hemi Ram 2002 Kawasaki Vulcan 1500 FI |
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