How do you remove the spark plug cap. I have applied a little pressure but I dont want to damage anything.

If you want to know how to do it go to YouTube.com will tell you and show you in a video how to do it...i hope this will help you a lot...

disconnect the cable from the negative battry terminal. position the engine with number one cylinder at TDC on the compression stroke this mean you can take number one spark plug out with the engine cool place your thumb over the spark hole and have some one turn the engine over and and feel the presure by your thumb when you feel pressure stop turning engine take the distributor cap and make sure the rotor is pointing to number one spark wire in distributor cap if not you may have to turn the engine a little with your hand apply a paint mark on the edge of the distributor body directly below the rotor tip. also make a mark on the distributor base to the engine to ensure the distributor can be re-installed in exactly the same position as originally installed disconnected the coil wires from the distributor cap electrical connector, spark plug wires from the spark plugs remove the distributor hold-down bolt and pull out the distributor.

The oil down the plug hole will cause the white smoke, and as you said it cleared in a couple of minutes, but also may have oil fowled the new plug. It cannot have damaged the engine.
pull the oily plug out and clean it in some solvent and try again, make sure the plug caps dont have oil on them

Rubber plug well seal is not properly positioned...dont mess with anything..I know katana. Properly position rubber water seal. Replace old plug wires with dielectric grease to help water proof...its not anything major katana are bulletproof!

The issue seems to be related to the spark plug threads. The spark plug is either not tightened down or the threads are stripped, and during the compression stroke when pressure is applied inside the combustion chamber, the pressure leaks thru the spark plug threads and blows off the spark plug boot. If the spark plug is not tightened and the threads are ok, then tightening the plug will resolve this issue. If the spark plug threads are damaged, then the threads will need to be repaired, and will require the cylinder head to be removed to repair the stripped threads. Taking the cylinder head off requires the engine's top end to be ripped apart and re-assembled....big job.

This should help.

Go through your spark plug wires and mark which plug it is on. Once you have done this then you can pull the wires off each spark plug. Once the plug wires are off take a spark plug socket and gently apply some pressure to loosen the spark plug. Once its loose you should be able to reach down and remove the plug by hand. Once you have the plug off grab your new plug. Make sure it has the correct gab setting for your engine size and then install the new plug. once you have the new plug in gently snug it down. Do this with the rest of your plugs. Once all your plugs are in place and snugged down then put your plug wires back on each plug (This is where the labeling comes in handy). It is also a good idea to get a good set of plug wires and just replace them while you are at it.

There are several problems that can cause this behavior, Is it cold where you are? If so the geo's have a known issue with starting in cold weather.

If not then here is a list of possible issues

1.) Cracked or damaged ignition coil and/or primary wire.
2.) Fuel Pump.
3.) Clogged fuel injectors (Engine will run rough when it does run if this is the case)
4.) Badly worn spark plugs, Spark Plug wires, Distributor cap and/or rotor.

*** WARNING *** Your ignition system contains dangerous voltage levels that could seriously injure or kill anyone coming into contact with the spark. Be sure to use insulated pliers or a spark tester and follow the instructions. Failure to do so could cause serious injury or death.

Tests to confirm:
1.) Purchase a spark tester from your local auto parts store, Connect a spark plug wire to the tester and connect the tester as described in its documentation, Have a friend crank your engine and watch for a bright blue spark, The spark should happen frequently and with a rythm, If it seems to skip alot proceed to test #4. If you dont see a spark at all the ignition coil is to blame, Even if you do see a spark, It should be bright blue and clearly visible in daylight, If it is then your ignition coil is doing its job.

2.) Get a pressure gague and hook it up to the fuel line, Turn the key off and on several times (Dont start the engine) if the pressure doesn't rise when the key is turned to on, Your fuel pump may be faulty, Even if it does rise it should reach 15 PSI, If it doesnt then replace the fuel pump and fuel pressure regulator.
3.) You would have to remove the injectors. I recommend you have a mechanic check to see if this is the problem.
4.) Remove the distributor cap and check the rotor for carbon tracking (A black line on the end that touches the cap) if you see that, Replace the cap and rotor and try test #1 again. If the rotor and cap are in good condition, reinstall them.

1 Inspect Battery Damaged or faulty battery and/or connections. here is a list of things u can check hope this helps Shaun 2 Inspect Coil - Ignition Damaged or faulty ignition coil or ignition coil circuit. 3 Inspect Fuel Filter Clogged or dirty fuel filter 4 Inspect Fuel Injector Pressure Regulator Faulty fuel injector pressure regulator or circuit. 5 Inspect Fuel Pump Improperly functioning fuel pump or circuits. 6 Inspect Wireset Damaged, worn, or deteriorating spark plug or coil wire(s). 7 Inspect Control Module-Ignition Faulty ignition control module or circuit. 8 Inspect Solenoid Switch Damaged or faulty solenoid switch or solenoid switch circuit. 9 Inspect Starter Damaged, worn, defective, or faulty starter or starter related circuit. 10 Inspect Neutral Safety Switch Damaged or faulty neutral safety swittch or circuit. 11 Inspect Fuse Corroded, burned, or shorted fuse may be interupting power source. 12 Inspect Fusible Link Corroded, burned, or shorted fusible link may be interupting power source. 13 Inspect Battery Cable Corroded, broken or poorly connected battery cable. 14 Inspect Spark Plug Wire Loom - Performance Improperly adjusted or worn/malfunctioning carburetor. 15 Inspect Distributor Cap Loose or cracked distributor cap 16 Inspect Distributor Cap And Rotor Kit Loose, cracked, or worn distributor cap and ignition rotor. 17 Inspect Fuel System Pressure Incorrect fuel pressure being delivered to carburetor or fuel injection system. 18 Inspect Fuel Injector Plugged, dirty or poorly connected fuel injector. 19 Inspect Ignition Switch Worn, damaged or faulty ignition switch or circuit. 20 Inspect Spark Plug Fouled, damaged or broken spark plug(s). 21 Inspect Belt Incorrectly routed, adjusted(tensioned), missing or worn drive belt(s). 22 Inspect Timing Belt Slipped or broken timing belt. 23 Inspect Timing Set Slipped timing chain or worn timing gear(s). 24 Inspect Fuel Tank Contaminated fuel from rusted or deteriorated fuel tank. 25 Inspect Ignition Timing Incorrectly adjusted engine timing.

The solution is:

Engine cover removal: Fairly simple, I will try to explain this best I can without pictures. To start, you will want to remove the connecting air intake hoses (BIG tube looking thing on bottom right of the top of the engine) it is clamped down, just take some pliers and unclamp it to remove hose. Then the hose right next to that one (adjacent to the front bumber) You will need an star screw driver, if you look at the two screw's heads on either side of it you will know what i'm talking about. Then that comes off. Then there is a wire attached to the air intake hose, you must unconnect it, (I explained already how to take wires off in the spark plug section below, they are all the same) Next all you have to do is pull up on one side of the engine cover. (if you look at the back left of the cover you see what looks like a rubber gromet, kinda of look like you need to take that bolt off just to get anywhere.. you don't, that rubber peice acts as a snap on button say on your shirt perhaps) You pull hard enough it will come up, and there is four of those rubber gromet fasteners so just keep wiggling it and pulling until you get it off.

Spark Plug removal:

The spark plugs are located on the very top in plain sight of the engine, easy easy to get to.. you will see (not the actual spark plug just sitting there staring at you, they are under the caps) There are five caps all facing the same way and they have wire connections hooking to all of them. First you have to unconnect the wire to the cap. Take a skinny flat head screw driver.. and stick it in the middle of the wire housing (don't get confused, the housing is just the plastic piece that is black, it "houses" all the wires that power the spark plugs) The middle of the wire housing you will see a little perfect sqaure opening, there is a little clamp thing in there and with the screw driver all you do is put pressure upward (toward the back of your car) and pull at the same time and the housing will disconnect from the spark plug cap. Do this to all five caps.

Next the cap itself, is really easy to take out, just use that same flat head screw driver to kind of pry underneath the cap, don't be afraid to put pressure you won't break anything, Then the cap will come off and underneath the cap (attached to it) is the spark plug covers (acts like.. a battery in the remote) long metal tubular looking things.. if you see that, your doing good. Now look down into the whole you just removed the spark plug cover from, you will see the top of the spark plug down in there. Do this for all five caps.

Now you need tools, a medium size wratchet would do good. make sure you have a loong extension, and a deep well (long) socket (size in MM is 15 in standard 9/16 or one higher) loosen (lefty loosey, righty tighty) the spark plug until you can pull it out with the wratchet.. discard old, put in new spark plug, tighten but not tight tight.. do that for all five spark plugs.. once new spark plug is in, put the spark plug cover and cap combo back into the whole ( MAKE SURE YOU CLEAN IT AND THE WHOLE OUT BEFORE HAND) then just apply little pressure and the cap will set back into place (just make sure it is facing the way it was before) then connect the wiring back to the end of the cap (just slide it on and push it will "click" into place) do that for all .. then put your engine cover back on, reconnect the hoses and the wire on top of the hose. You are then good to go.