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95 Chrysler Cirrus Oil Leaks at Exhaust Studs
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mibf350
New User
Dec 18, 2012, 10:34 PM
Post #1 of 2
(2229 views)
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95 Chrysler Cirrus Oil Leaks at Exhaust Studs
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Auto Specs: 95 Chrysler Cirrus, 2.5L V6 (Misubishi), 211350 Miles.
GENERAL: This is a help my daughters "friend" that turned into a project. Car purchased from a tow yard so no maintenance history available. Ran OK - Oil all over lower engine and frame - vacuum leaks.
OIL LEAK REPAIRS: Replaced valve cover gaskets, cam seals, oil pressure sender.
OTHER REPAIRS: Replaced timing belt with idler and tension rollers, water pump and inlet tube, accessory belts, intake and injector gaskets, vacuum tubing as needed, rear brake shoes and drums, radiator flush.
Engine runs OK after repairs.
PROBLEM: Oil is leaking/seeping around the exhaust manifold studs. Specifically the lower row of studs on both exhaust manifolds but only the first three studs from the front of the engine.
Oil was present in these areas before repairs. I wiped excess oil, drips etc. and ran the engine after repairs, inspecting for leaks, water, oil etc. I can see the oil squeezing out between the flat washer and nut on the studs described. I have wiped this down several times, and no oil is coming down from the valve covers or head gaskets. The exhaust manifold is completely dry and devoid of any oil except along the lower stud web of the manifold. The oil forms sufficient to drip off the tip of the stud in about 5 minutes of idling.
Inspecting the heads on the car and other online pictures it appears there may be an oil channel that runs behind the lower row of exhaust studs from the front of the head that ends between the third and fourth stud. Also note no oil is coming out at the fourth stud on either manifold. The car does not smoke and the exhaust gaskets are tight and intact.
The remedy would appear to be resealing the stud threads in the head but I have never seen this problem before on any engine. I do not have any familiarity with this engine so if anyone out there does I would appreciate your input.
Thanks, MIB.
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 19, 2012, 4:16 AM
Post #2 of 2
(2185 views)
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Re: 95 Chrysler Cirrus Oil Leaks at Exhaust Studs
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You have to be wrong about this. None of it makes any sense at all. There is no oil galley placed that close to exhaust. Oil could not survive in that environment. The head could be crack in one specific area but that wouldn't spread over the entire manifold.
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