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#1
11-23-2010, 06:09 PM
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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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#2
11-23-2010, 06:22 PM
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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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#3
11-23-2010, 06:27 PM
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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.
__________________
57 Chevy 210 65 Olds 442 Convertible (Another one sold) 75 GMC Vandura 3/4 Ton 1999 K2500 Old Body Style Suburban (Gone but not forgotten) 05 Dodge Ram 3500/5.9 Cummins 2012 Toyota FJ Cruiser
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#5
11-24-2010, 01:34 PM
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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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#6
11-25-2010, 11:31 PM
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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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#7
11-26-2010, 10:58 AM
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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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