Ok i hava a 94 accord with 250K miles on it. The car has not been starting because there is oil on the spark plugs. If i clean them off the car starts right up and runs great. But if it sits for a while then it wont start again. So i figured i would change the valve cover gasket (since i was getting oil in the top of the spark plugs). The kit came with these other O rigs that i guess go under the rockers?? Does anyone know how to change these? Do i just unbolt the rockers and replace them?? Do i need to pull the cam out? and is this going to fix my problem???

Thanks

 

The upper sparkplug tube seals are the fatter ones that are kinda like the valvecover gasket. You can hope that's the leak, because they're easy to change.

If it still leaks, then go back in & change the lower tube seals. You have to remove the valvegear & the camshaft bearing caps. I don't think you have to remove the camshaft itself, but once the caps are off the belt might pull the camshaft enough to move it.

Go to the DIY section for the "shop manuals" thread & get a manual for the tightening sequence & torque for the bearing caps. Some of those things have low-ish torque & you don't want to pull threads out of the head.

 

Why do you have to put the motor at top dead center? You dont have to turn the motor orver, so why cant you just mark the distributor and thats it?

 

I'm not sure, but I suspect it's because the fewest number of valves are open, and they're open the least amount. So there's less spring force acting on the camshaft & valve gear when you start loosening bolts.

To maintain spark timing, it's still a good idea to mark the distributor. But I prefer using the disassembly as an excuse to use a timing light & set spark timing properly.

 

People when doing this job mistakenly loosen the adjusters for the valve lash in trying to remove the rocker arm shaft. If you move the adjusters you will have to set the valve lash.

 

I changed the o-rings on my 92 Accord. I loosened the valves , and reset them after replacing the o-rings. The camshafts did not move, and everything was pretty simple. Setting the valves is the real chore. A very smart guy told me you don't have to back the valves off, but if you don't, you have to be very careful how you put everything back together. If you don't back them off, some of them will be under pressure from the rockers/springs, and if one is not lined up right you could bend the valve. When you take the rocker assembly off, leave the bolts in the caps, and lift it all together with the bolts hanging. You really need a good service manual to do this correctly.