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11-23-2010, 05:09 PM
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#1 | |
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AF Newbie
Join Date: Sep 2006
Location: Cheney, Kansas
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8.1 leaky front main seal replacement
since i can't find a haynes or chilton repair manual with an 8.1 liter in it.... how difficult is it to change out the front crank seal in a 01 silverado? can i do it with basic tools in my garage? or should i have it done professionally? just looking for advice. thanks
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11-23-2010, 05:22 PM
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#2 | ||
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AF Fanatic
Join Date: Oct 2007
Location: EVERETT, Massachusetts
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Re: 8.1 leaky front main seal replacement
Quote:
with your problem of this seal leaking, how many miles , and what is the engines condition ? It is possible the crank bearings are worn causing the leak. I don't have a manual for the 8.1 L ... |
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11-23-2010, 05:27 PM
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#3 | |
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AF Enthusiast
Join Date: Jan 2004
Location: Maybe, California
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Re: 8.1 leaky front main seal replacement
Radiator and everything in front of it has to come out. Need a special tool to remove and install crank damper. Need a tool to remove and install new seal. Not an easy job. Best left to someone you trust.
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11-23-2010, 07:10 PM
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#4 | |
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AF Newbie
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Re: 8.1 leaky front main seal replacement
engine has 160k miles on it.
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11-24-2010, 12:34 PM
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#5 | ||
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AF Fanatic
Join Date: Oct 2007
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Re: 8.1 leaky front main seal replacement
Quote:
does the exhaust blow out oil smoke ...how long does it take for the oil to get black after an oil change ? what oil pressures do you get ? |
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11-25-2010, 10:31 PM
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#6 | ||
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AF Newbie
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Join Date: Sep 2006
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Re: 8.1 leaky front main seal replacement
Quote:
no smoke at all from the engine at start up nor under loads. oil gets black around 500-700 miles after change... rough estimate since it's been awhile since i kept track of when it turns black. oil pressure of 40-50 at highway speeds, but has dropped a bit with a noticeable increase in the amount of oil that is leaking out. |
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11-26-2010, 09:58 AM
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#7 | ||
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AF Fanatic
Join Date: Oct 2007
Location: EVERETT, Massachusetts
Posts: 10,898
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Re: 8.1 leaky front main seal replacement
Quote:
if the oil pressure at idle is less than 20psi, oil turns black at 500miles, and you have oil in the exhaust this is usually a well worn engine and the crankbearings worn will allow the crankshaft to move too much causing leakages at the seals..a new seal will reduce this , but may not stop it.. |
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