Sparkplugs are drenched in oil
03-27-11, 06:32 PM
#1
Sparkplugs are drenched in oil
The SCs been sitting for about a week now cause its been driving like crap. Last week, outta no where it lost power. I thought I blew my HG cause of high mileage, over 200K.
Today it wasnt raining so I decided to run a compression test. Once I pulled the front sparkplugs(cylinders 1-3, the rears were OK) out they were flooded in oil, INCLUDING the electrodes.
I did a search, some responses were that the valve cover gasket leaks oil into the sparkplug valleys and gets to the plugs. I dont see this happening in my situation cause the walls going to the sparkplug valleys are clean, no signs of oil. I did see oil on top of my pistons when looking thru the sparkplug hole, so Im thinking the problem is internal.
Where can the oil be coming from? The compression test came out good, my readings were 230,230,220,215,210,210. The cylinders with the oiled plugs had high compression
Today it wasnt raining so I decided to run a compression test. Once I pulled the front sparkplugs(cylinders 1-3, the rears were OK) out they were flooded in oil, INCLUDING the electrodes.
I did a search, some responses were that the valve cover gasket leaks oil into the sparkplug valleys and gets to the plugs. I dont see this happening in my situation cause the walls going to the sparkplug valleys are clean, no signs of oil. I did see oil on top of my pistons when looking thru the sparkplug hole, so Im thinking the problem is internal.
Where can the oil be coming from? The compression test came out good, my readings were 230,230,220,215,210,210. The cylinders with the oiled plugs had high compression
Last edited by 6SOARER; 03-27-11 at 08:33 PM.
03-27-11, 06:54 PM
#3
I GOOGLED to see what can be some possible causes. Worn Valve seals, blown head gasket, cracked head, or worn piston rings were mentioned but dont have a certain answer.
My compresssion test came out good so most of these symptoms would not be plausible, NO??
My compresssion test came out good so most of these symptoms would not be plausible, NO??
03-28-11, 07:00 AM
#8
A cylinder that is flooded with oil will have high numbers regardless of ring condition. It is a common procedure to put oil in the cylinder and watch compression go up. That is a LOT of oil though.
So with all that oil in the cylinder and on the plugs, it doesn't smoke? That seems highly unlikely. Unless it's dead missing on those cylinders it should be smoking like a chimney...
So this is a boosted car, or not?
So with all that oil in the cylinder and on the plugs, it doesn't smoke? That seems highly unlikely. Unless it's dead missing on those cylinders it should be smoking like a chimney...
So this is a boosted car, or not?
03-28-11, 09:37 AM
#9
A cylinder that is flooded with oil will have high numbers regardless of ring condition. It is a common procedure to put oil in the cylinder and watch compression go up. That is a LOT of oil though.
So with all that oil in the cylinder and on the plugs, it doesn't smoke? That seems highly unlikely. Unless it's dead missing on those cylinders it should be smoking like a chimney...
So this is a boosted car, or not?
So with all that oil in the cylinder and on the plugs, it doesn't smoke? That seems highly unlikely. Unless it's dead missing on those cylinders it should be smoking like a chimney...
So this is a boosted car, or not?
When I initailly noticed the power lose, I drove it home immediately and didnt see any smoke. The car would ping hard whenever I would mash on it, so I made sure I cruised it home
03-28-11, 02:39 PM
#10
If you still have them, maybe it is burning it all off in the cats, and/or your cats are clogged or clogging, which would also make the car run like crap. I am not familiar with the PCV system on a GE, but you may check the pcv valve, as well as the power steering vacuum bypass to make sure its not sucking ps fluid through there.
It kinda looks like the socket and hex part of the plug are oily in the pics. Are you positive the recess in the head was not pooled with oil from above? You could try cleaning everything up really well, sticking some new plugs in it and driving it to make sure its not just the old puddle from above issue.
It kinda looks like the socket and hex part of the plug are oily in the pics. Are you positive the recess in the head was not pooled with oil from above? You could try cleaning everything up really well, sticking some new plugs in it and driving it to make sure its not just the old puddle from above issue.
03-28-11, 09:40 PM
#13
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Install new valve cover gaskets. I noticed the same thing(while changing the valve cover gasket and plugs lol) its a pain, but when done, the car will run better...
03-29-11, 09:50 AM
#14
I forgot to mention that I noticed my intake manifold has oil in it to. Its not wet oil, more like oil that has been sitting. This is more on the front runners, the rear runnners are cleaner.
Im kinda hurting for money now and I want to get this to checked out but if I bring both head and block into the machine shop, its going to cost me twice as much. I'd like to eliminate one or the other if possible.
Sounds like bad valve guide seals?
Im kinda hurting for money now and I want to get this to checked out but if I bring both head and block into the machine shop, its going to cost me twice as much. I'd like to eliminate one or the other if possible.
Sounds like bad valve guide seals?
Last edited by 6SOARER; 03-29-11 at 09:53 AM.
03-29-11, 09:54 AM
#15
Oil in the intake really makes me think PCV. I have no GE setup to look at the PCV routing, but you should check into that. Valve guide seals would not allow oil back into the intake like that. The oil would get sucked right into the cylinder from the follower bucket in the head, bypassing the intake.