Car wont start

you got oil leaked down the plug holes from the valve cover you will need to buy a tube of ultra grey silicon . try this take all plugs out wash them with carb spray wash the spark plug holes out with rag twisted onto screw driver and gas ect ok when dry put a little smear of the ultra grey onto the spark plug threads near the center of the threads all the way around then screw plug into hole let it dry do all the plugs this way it should top the miss if it come back and theres more oil in the spark plug tube hole youl have to take the valve cover off and clean the gasket with gasoline or carb spray dry the gasket off then clean gasket groove on pan and dry it with rag (tee shirt) put a smear of the ultra grey silicon (get at autozone ) all the way around the gasket both sides wash the head where the gasket go's (seals)with gas or carb spray (also nail polish remover ) put valve cover on see that the gasket is in place proper befor tightening the cover bolts

You need a new Valve Cover Gasket. The rubber seals around the spark plug holes on the Valve Cover are leaking. A new Valve Cover Gasket will come with the round gaskets that seal the spark plug hole.

1. Worn or broken rings on that cylinder
2. Valve guides or seals worn on that cylinder
3. To fix the rings you will have to remove the head and sump (Remove the motor from the car if you cannot remove the sump with it in the car)
4. Yes it will make your car run bad

I am going to assume you pulled the spark plug wires when you were working on this. Make sure you connected the right wore to the roight spark plug

you have a bad valve cover gasket/ spark plug o-ring i assume the plug is set in the head with valve cover above it since there is oil in the cover gaskets and o rings are used to seal in oil remove and replace gaskets be sure to find the right torque spec for the cover bolts also remember to start with the center bolts and work your way evenly to the outside

No spark is caused first by crank sensor. this sends a signal to the module and coil packs to plug wires. Sensor may be fualty. It will cause car to act the way yours did.

Sounds like your valve cover gasket is leaking oil into your spark plugs and is causing both of your problems.  if you have oil on one of your plugs then that plug can't fire correctly causing the car not to start.  I would suggest that you change the plug that has been fouled by the oil and check the wire if it got a lot of oil on it as well as the oil can degrade their ability to insulate, and the plugs will start arcing up the sides and engine will start misfiring. You should be able to change the valve cover gasket relatively easy with a couple of tools.  Hope this helps.  Thanks for ranking my response and for using FixYa!

no, not a blown headgasket, remove the valve cover and inspect the spark plug hole seals(tube seals in the valve cover) replace if brittle and old. also change the valve cover gasket since u have it off...adjust the valves as well

Yes the oil can cause the car to lose spark, the oil leak could be caused by the valve cover gaskets around the spark openings, but 9 times out of 10 it is the spark plug tube "O" rings. The top of the valve train comes off of the head, the "O" rings are between the two halves, that will fix the oil leak.

Firing sequence is off or plug wires are not connected completely. check the firing order, to the plugs and make sure all connections are on (you will have to push down on top of boot pretty hard to get a good connection)

If it is turing over jump starting isn't gonig to help (you battery if fine unless you have drained all the power from it)