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01-22-2009, 12:39 PM
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#1 | |
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Resident Chemist
 
Join Date: Feb 2004
Location: Rockville, Maryland
Posts: 8,586
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5S-FE Blow-by
My '96 5S-FE 4 cyl has really intense blow-by at idle as judged by removing the oil filler cap. If I place my hand over the filler cap hole, it is quickly covered in oil. The PCV valve system and other breather line to the intake are both free and clear. Compression on all cylinders is between 175 and 185 psi. Engine is relatively smooth-running and seems to have normal power for this engine at least.
This may be a characteristic of the 5S-FE engine. Anyone else give input on their experience with this?
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01-23-2009, 12:01 PM
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#2 | |
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The RustBuster
Join Date: Feb 2006
Location: La Plata, Maryland
Posts: 2,290
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Re: 5S-FE Blow-by
Mine does the same thing. If I remove the oil fill cap when it's running, I get spurts of oil on the underside of the hood and on the windshield. I also reported a ways back when attempting to pour Seafoam into the oil fill, it just got blown back out of the funnel...think I'll try pouring it down the dipstick tube next time. PCV was clean and working and power is good. I think it is just inherent...any others?
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Current Garage: 2009 Honda CR-V EX 2006 Mazda 3i 2004 Chevrolet Silverado 2500HD 2003 GMC Envoy XL 2000 Honda ST1100 2000 Pontiac Sunfire Vehicle History: 2003 Pontiac Vibe AWD - 1999 Acura Integra GS - 2004 4.7L Dakota Quad Cab 4x4 - 1996 GMC Jimmy 4wd - 1995 Chevrolet C2500 - 1992 Toyota Camry LE 2.2L - 1992 Chevrolet S10 Ext. Cab 4.3L - 1995 Honda ST1100 - 1980 Yamaha XS400 - 1980 Mercury Bobcat. |
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01-23-2009, 02:42 PM
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#3 | |
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Resident Chemist
Join Date: Feb 2004
Location: Rockville, Maryland
Posts: 8,586
Thanks: 105
Thanked 157 Times in 157 Posts
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Re: 5S-FE Blow-by
This is in sharp contrast with other engines (50-150k miles) I am familiar with which have absolutely no blow-by under the same circumstances.
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