My 2000 nissan altima is accelarating slowly just got valve cover gasket done, oil change, spark plugs,thermastat and all mounts.now the service engiene soon light is off what could be the problem that the oil light is on now and flashes when driving.

The valve cover gasket seals are probably old and brittle and they are not sealing in the oil. This happens to most vehicles as they get older. With coil on cap plugs, oil will fill up the spark plug tubes and it will start to missfire. New valve cover gasket seals are probably needed

Hi Brianna,check your valve cover gaskets,you have 2,they could be leaking causing this,Nissan is know for this,yes I have one too.

Do you have oil in the cylinder or around the spark plug?

Here is how I replaced valve cover gasket and spark plug seals on my 2003 2.5SL:

http://www.youtube.com/watch?v=JQmMdfEGweU

Yes, you need a Rocker cover (valve cover) Gasket kit. Remove the valve cover, remove all old O-rings and cover gasket, clean grooves and mating surfaces without gouging or scratching them, put the new gaskets on as per factory recommendations, tighten to the proper torque and you're done. The spark plug holes in the cover are part of the valve cover gasket kit. Any Napa, Car Quest, Pep Boys, Auto Zone will have it.

You need to replace the valve cover gasket.Under the valve cover are four tubes that the spark plugs fit down into. between these tubes and the inside of the valve cover is a series of round gaskets that fit on these tubes. When they get old they leak oil into these tubes.replace spark plugs and wires when you do the job,they are most likely finished.Its a nice job for a Saturday morning,about an hour. Good Luck

I would try snugging down all the valve cover bolts before replacing anything. A valve cover gasket kit should have the grommets and gaskets necessary to repair this if you find no loose bolts.

replace the front oil seal. first i would clean the engine with purple power (degrease etc.) then look at the engine and make sure the leak is not coming from above like possibly the valve cover gasket or from the oil sending unit. try to tighten the bolts on the valve cover and even the oil pan. you never know, you may get lucky. i don't know where you are but front seals are cheap but the labor on the job is what costs you.

its very easy maybe it will take you thirty minutes if u want buy some cheap rubber gloves

When you buy the valve cover set, it will include the spark plug well "O" rings. Simply remove the valve cover and on the underside of the valve cover, you'll see the "O" rings that need replaced and you'll see exactly how the valve cover gasket itself fits.