Intake Manifold is leaking Oil sholud I fix it or let the engine blow - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-13-2011, 03:29 AM   #1
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Default Intake Manifold is leaking Oil sholud I fix it or let the engine blow

I have been finding oil on the top side of the motor for about 4 to 5 months now and my stepdad found the source of my leak and it is coming from the intake manifold. Also I all ready replaced the valve cover gaskets and it still leaked so that was ruled out since the oil is coming out right below the Mass Air Flow Sensor. I have had the car for all most a year now and I can't afford another one anytime here soon. So should I replace it or just let it blow the engine when it starts to leak coolant. Also I heard the task to replace one is a 12 to 13 hour job and it I due it myself it will take me 2 days. So what yall think about this. Thanks.
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Old 02-13-2011, 10:12 AM   #2
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What engine and year is this on? I can do a 3800 in under 3 hours.
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Old 02-13-2011, 03:10 PM   #3
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I have an 89 Olds Delta 88 Royal Brougham with the 3800 V6.
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Old 02-13-2011, 03:21 PM   #4
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Same basic layout. But if it'* your first time, there'* no reason why it should take any more then 5 hours.

Remove some coolant
Disconnect battery
disconnect fuel lines
Unplug injectors
remove fuel rails and injectors
unplug throttle body sensors and remove throttle body
remove UIM, 9 bolts I believe
remove LIM, 12 bolts. Should be 2 hided bolts inside LIM
Clean up any spilled coolant
Cover lifter valley
Clean gasket surfaces
Put all back together
Torque to proper amounts Double check, but should be 132 inch pounds for LIM, and 89 inch pounds for UIM
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Old 02-13-2011, 04:01 PM   #5
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What about the Push Rods. They go threw the gasket or are they incorrect on that.
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Old 02-13-2011, 05:23 PM   #6
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The do not go threw the gasket. They do go threw the head gaskets, but your not changing those.
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Old 02-13-2011, 09:05 PM   #7
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Should I also inspect the fuel injectors to or not to see if any need to be replaced? Also here is the link to the gasket set I will be getting. http://www.oreillyauto.com/site/c/de...2293&ppt=C0026.
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Old 02-13-2011, 09:08 PM   #8
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You will be pulling the injectors off with the fuel rail when you do the job. You can look at them, but really they should be fine.
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Old 02-13-2011, 09:13 PM   #9
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So it sounds like they were trying to make me due some extra work then what was really needed then. Thanks so much for the advice you gave me. For the time being I will just keep an eye on it till I can get enough cash together to buy the gasket. Also will it leak coolant to or not.
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Old 02-13-2011, 09:17 PM   #10
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If the gasket is leaking, coolant is about all that will come out.
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