As I am redoing my exhaust manifold I decided to take all the plugs out to see how they were doing. All are nice and white except one that is brown and oily I know this may sound ignorant of me but... what does that mean ? Oil in the cylinder ? Wear from the rings/piston ? A gasket issue ? Is this a big issue ? Can live with it ?
The gasket on either plug is "Crushed" properly. They are supposed to be torqued to 35ft. lbs. The plug is also the ground to the head, block, ultimately back to the battery. I've been using the Bosch Single Platinum plugs for years now. The "NailHead" stocking number is 4036. When you can find them on sale will cost around 2 bucks each. Since they require about 1/2 the voltage to fire you can increase the gap to .040"-.050" gap.
Here is the compression test I did in 2010 before cleaning up the lifters (but no head removal), new oil change.... It runs better but as you can see plug 6 has always been 'wet'.. Others all cleared up since the test (nice and white)... Compression seems OK though. What could it be ?
Could be a valve guide with to much clearance,or a valve stem seal? (do Nail Heads have valve stem seals? I can't remember.)
Valve stem seals were only used in '66 & then only on the intakes. I meant to say that the spark plug gaskets are NOT crushed enough. They need to be torqued just like any other fastener on the engine.
Yep,,, tork the plugs to the right specs.... and thoroughly chack the dist cap, wire, on that cyl.... and then run it to see what happens... question... is the car just driven on short trips around town or does it ever see highway use????? a good road trip at speed might do it some good.....
Good point Doc... It mostly does very small trips through the streets of Paris (stop and go traffic, around the block and back type of drive) and then back in the garage. It needs to get out on the highway a bit more (probably went 3-4 times on the highway this year). I do warm her up before I drive her around but never get too far..... Between work, bad weather (dont drive in rain) and wife, it gets hard to get her out too long.... When I get her all back together and nice & clean it will be easier to take the wife out in it !!! Wife feels it is still flimsy looking (took off door panels, some chrome..), too much engine odors and exhaust smell... I'm trying to cure those issues :Brow: ... redoing exhaust manifold, holes in exhaust tube etc...
generally speaking, you have to drive about 7 miles for a engine to be warmed up completely,,, or about 30 minutes time.... and ,,, that is just warm up time,,,, then the engine has to be run at speed, whether low or high,, for some time before the plug noses burn ''clean''....the gasket , if it has one has to crush the specified amount in order for the proper heat transfer to occur from the plugs to the head....and,,,, all this stuff affects how a engine runs....and the mileage that it gets.....:Brow:
Love that car,,, and the city looks like fun.... but ,,,, I aint got the money to get there.....:ball::ball::ball:
