Question about 1990 Nissan 300ZX

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Engine oil leak

Engine oil go troungh in manifold ,how to fix it

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  • yadayada
    yadayada May 11, 2010

    Please explain further, oil is leaking from the intake?

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I worked in a Nissan dealership for 10 years...

I've seen these gaskets dry out and get hard over time- like enough that you have to chisel them off of the valve covers! That's most likely the source and you'll have to pull the plenum to get the valve covers off... 20+ hour job for an experienced tech... Good luck!

Posted on Oct 29, 2008

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Oil leak it can be cylinder head cover gasket,or cover bolts is loose have look cylinder head cover try to tight first if not put new gasket cover.

Posted on Oct 28, 2008

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I cranked my car up this morning and for the last few morning when i warm it up it gives a burning smell. I dont see any leaks. What could the problem be?


check for oil leaks around the engine manifold check rocker cover for leaks if its a diesel check the turbo charger for leaks check wiring around exhaust manifold

Nov 07, 2014 | 2008 Mercedes-Benz Mercedes Benz C Class

1 Answer

My 2008 Chevy uplander engine light on and the code shows for cam shaft sensor and intake manifold what I do


The intake code means its leaking from the intake,bad gaskets, or a vacuum leak. check for bad gaskets on intake manifold. You can tell by putting a bit of oil around the maifold. if it is leaking the engine will flair up. To check this, External leak-- Coolant seeps through the broken intake manifold gasket to the outside of the engine. If its bad enough you will see coolant dripping from gasket. Coolant seeps through the damaged gasket to the inside of the engine, mixing with motor oil. If you suspect an internal leak, check your oil dipstick. Or if you have a substance under oil filler cap that looks like a milkshake, Oil is mixing with coolant. this means intake gaskets are bad, Now for the camshaft sensor, If you have a manifold leak. this could be giving you a false camshaft reading! Because, If sensor is bad vehicle will not start unless theres a wire problem. Symtoms of a bad sensor are--- engine sputtering, poor acceleration, stalling/inability to start. HopeI helped you out! Good-Day!

Jul 26, 2014 | 2008 Chevrolet Uplander

1 Answer

Oil leaking from Manifold Gasket bolts


any smoke from the tail pipe.if it is ,it might headgasket leaking from inside the engine or the valve stem.check the PCV system ,it might block it & oil is going to intake system.check the PCV system & the vent hose first.

Jan 27, 2014 | 2007 Chevrolet Aveo Sedan

1 Answer

Change Spark Plugs but engine starts to leak oil


??? Sounds purely coincidental... You may want to look at where the oil is coming from and fix that issue. Oil pan, Oil filter, oil cooler, oil sending unit, intake manifold, valve covers, rear seal....

Jun 11, 2012 | 2002 Land Rover Freelander

1 Answer

2002 grand am does not leak after driving, but I wake up in the morning to a huge puddle of oil.


SOUND LIKE FRONT CRANKSHAFT TIMING COVER SEAL OR REAR MAIN OIL SEAL LEAKING START ENGINE LET IT IDLE SEE IF YOU SEE OIL DRIPPING UNDERNEATH CAR LOOK FOR OIL LEAK AT TIMING COVER OR AT REAR OF ENGINE WHERE REAR MAIN SEAL LOCATED. CHECK ON TOP OF ENGINE INTAKE MANIFOLD AREA WHERE OIL PUMP DRIVE GEAR IS.O - RING AT THE OIL PUMP DRIVE GEAR WILL CAUSE LARGE OIL LEAK.OIL PUMP DRIVE GEAR IS LOCATED WHERE THE DISTRIBUTOR USE TO BE LOCATED.KEEP EYE ON OIL LEVEL IN CRANK CASE.KEEP PLENTY ENGINE OIL ON HAND UNTIL YOU FIX.I WOULD FIND LOCATE PROBLEM QUICK AS POSSIBLE BECAUSE OIL LEVEL GET TOO LOW ENGINE WILL SEIZE UP LACK OF OIL..

Jul 04, 2011 | 2001 Pontiac Grand Am SE

1 Answer

86 nissan pickup 3.0 5speed 4x4 and i got oil in the water and none visible on the dipstick though,,,i also seem to have lost oil pressure but the light isnt on just low guage and when i got home valves or...


SOUND LIKE INTAKE MANIFOLD LEAK.ANTIFREEZE WILL GET IN CRANK CASE DILUTE ENGINE OIL CAUSE VALVE LIFTER NOISE.TAKE VECHICLE TO RADIATOR SHOP OR GARAGE.LET THEM PRESSURISE COOLANT SYSTEM CHECK FOR INTAKE MANIFOLD LEAK AND HEAD GASKET LEAK.

Dec 10, 2010 | 1986 Nissan Pickup 4WD 1986

1 Answer

Burning smell, increase with travel


CHECK AROUND EXHAUST MANIFOLD AROUND THE ENGINE LOOK FOR OIL LEAKS AROUND VALVE COVER GASKET AREA LOOK FOR COOLANT LEAK ON EXHAUST MANIFOLD.CHECK FOR OIL LEAKS ON FRONT SEAL ON CRANKSHAFT TIMING COVER.

Apr 17, 2010 | 1998 Chevrolet Cavalier

1 Answer

Engine smokes when hot


this is caused by a valve cover gasket leak, replace them

Jan 06, 2010 | Dodge Grand Caravan Cars & Trucks

1 Answer

Serious Oil leak while running


The oil pressure sensor is likely leaking. The tops of them break off due to the heat from the exhaust manifold. Luckily its on the front so the exhaust manifold isnt that hard to loosen up so that you can get in there to replace the sensor. I would fix this ASAP as it is a serious fire hazard.

Apr 10, 2009 | 1994 Oldsmobile Achieva Special Edition

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