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Frontier Nissan Frontier/HB/Truck Discussion Forum

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Old 02-23-2022, 01:48 PM
Schrade Schrade is offline
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2002 Frontier
 
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Default Oil around plugs ?

I swapped 2 plugs today for a diagnostic test (was runnin' fine , even after SES lit up today) .

When I pulled #1 , I thought I heard oil going into cylinder . And oil dripped off the plug .

Same thing , #2 - sounded like MORE oil , and a few more drops from pulled plug .

After plug swap , she smoked for 5 minutes , then was runnin' just as well as before .

Plugged drain hole in back of head ? No oil pressure problems ; O/C every 5k miles .................
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Old 02-26-2022, 04:55 AM
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Cusser Cusser is offline
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2004 Frontier King Cab
1998 Pathfinder
1998 Frontier
 
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Is the oil from a leak in a valve cover gasket? And just dripping into the recess, getting into the cylinder when the plug is removed.
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Old 03-22-2022, 06:56 AM
Schrade Schrade is offline
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No - valve cover gasket replaced 2 years ago ; no leaks .


Only thing I can think of is plugged oil drain from head back to crank case , but no reason for that - no oil pressure problems , and it hasn't blown V/C gasket (which it should do , if too much pressure from oil pumped up top , and not returning ) .



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Originally Posted by Cusser View Post
Is the oil from a leak in a valve cover gasket? And just dripping into the recess, getting into the cylinder when the plug is removed.
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