I need to know the (gap) clearance for sparck candle

First check the condition of spark plugs. See if there is any oil or gunk on them. If there is oil -you may have bad piston rings or bad valves. If the stem on the spark plugs is too wore or short then replace them.
Maybe you need new ones. Make sure that you gap them before installing.
If old ones are still good then clean with toothbrush size wire brush. Re-gap them and re-install.

Also check engine air filter it may need replacing.

After all that and it still won't idle then replace the TPS (throttle position sensor) which is mounted on the side of the carburetor with three screws. It is known to go out between 80,000 to 100,000 miles

Now spark plugs last a very long time manufacturers are confident in hiding them away behind other stuff that has to be painstakingly unbolted, unclipped or generally removed for access. Even standard spark plugs are good for a couple of years of average driving and most will manage 30 or 40,000 miles.
The last couple of services I did I had to consider whether replacement was advisable at between 60 and 70,000 miles. Even studying the electrodes through a powerful magnifier didn't show any reason to change them. I did change them because the internal suppressor resistor does tend to wear out electrically.

Like a lot of people I don't think it is natural or advisable to leave spark plugs for that length of time so mostly I am taking them out, looking at them and then putting them back with some anti-seize on the threads and silicone grease on the boots and terminals.

Plug spanners are out these days and sometimes it is two extension bars, the ratchet, the socket and a couple of universal joints that are needed to service the plugs after moving a lot of other rubbish and then sometimes even having to lay across the engine...

First of all you will need a decent set of tools. depth feeler gauges, a workshop manual with the valve clearances, and a method of turning the engine by hand. You will need to take off the valve covers. After this you can check each of the valves for clearance by sliding the feeler gauges into the gap between rocker-arm or cam lobe and valve or tappet. Trick is you can only do this when the engine is in the correct position, so consult the manual and rotate the engine by hand accordingly. Remove the spark plugs to make rotating the engine easier. Adjust the tappet to gain the proper clearance as documented in the workshop manual. The feeler gauge should drag just slightly as you slide it out or slide it in. In ideal conditions I would guess this is about a 2~3 hour job, assuming ideal conditions, and not too much stuff in your way that will need to be moved. If your working at home, those are not ideal conditions.

For the record I've only done this sort of job on motorcycles, so I've never actually adjusted tappets. The theory is the same though.

tune it up. (fresh spark parts work best in cold and for sure damp wheather.
fresh gas?
leaking injectors?
isc stuck closed, and rpm low, hot?

the ecu, anticipates the next cold start,
it knows how much to open the iSC valve, to get a good start cold
and if colder to day, it opens more. (math)
if it (ISC) is gummed up,fas all do, it cant start right
so next time, try %10 throttle, starting, emulating a good ISC.
see?

Tune Up

Spark Plug

AWSF-42C

Spark Plug Gap

0.044

Ignition Timing

10 degrees BTDC

Firing Order

1-4-2-5-3-6

Distributor Rotation

Clockwise

Valve Clearance Intake

0.014

Valve Clearance Exhaust

0.016

If you're replacing the spark plugs in your car engine, you'll need to set the gap before reseating the spark plug. The gap is the distance electricity arcs between the ground electrode and center electrode. The gap must be set correctly to ensure maximum performance. Here's how to set the gap of a spark plug.

1. Remove the spark plug wires. Use a socket wrench to remove the spark plugs from their chambers.
   
2. Clean the spark plug if you are not replacing it with a new one. Remove all dirt and debris from the spark plug.
   
3. Check the owner's manual for your car (or any appliance with spark plugs) to find out the recommended gap setting.
   
4. Use a gap tool to check the gap of the spark plug. Slip the tool between the ground electrode and center electrode. The gap tool should fit snugly at the recommended gap width indicated on the tool.
   
5. Push the tool between the electrodes a few times to ensure proper gap. If the gap is too wide, push the ground electrode firmly against a flat surface to narrow the gap and then check again with the gap tool.
   
6. Repeat Step 5 as necessary until you reach the correct gap. Reseat the spark plug and reattach the spark plug wires
   

Good Luck

Hi by removing the cover on top of the engine you will see the spark plug wires pull out plug wires and unscrew plugs using a 5/8 socket remember to check the gap on the plug you can fined the gap clearance in the engine compartment good luck

Hello, I hope this info helps...(subytech1)...REMOVAL
In this engine, each individual spark plug is located under each ignition coil.

1. Prior to removing spark plug, spray compressed air around base ofignition coil at cylinder head. This will help prevent foreign materialfrom entering combustion chamber.
2. On this engine each individual ignition coil must be removedto gain access to each spark plug. Refer to Ignition CoilRemoval/Installation.
3. Check condition of coil O-ring and replace as necessary.

1. Inspect spark plug condition. Refer to Spark Plug Conditions.

CLEANING
Theplugs may be cleaned using commercially available spark plug cleaningequipment. After cleaning, file center electrode flat with a smallpoint file or jewelers file before adjusting gap.

CAUTION: Never use a motorized wire wheel brush to clean sparkplugs. Metallic deposits will remain on spark plug insulator and willcause plug misfire.

ADJUSTMENT

Setting Spark Plug Gap - Typical
Check spark plug gap with a gap gauge tool. If the gap is not correct,adjust it by bending ground electrode. Never attempt to adjust gap bybending center electrode.

INSTALLATION

CAUTION: This engine is equipped with copper core groundelectrode spark plugs. They must be replaced with the same type/numberspark plug as the original. If another spark plug is substituted,pre-ignition will result.

Special care should be taken when installing spark plugs into cylinderhead spark plug wells. Be sure plugs do not drop into plug wells asground straps may be bent resulting in a change in plug gap, orelectrodes can be damaged.

Always tighten spark plugs to specified torque. Over tightening cancause distortion resulting in a change in spark plug gap or a crackedporcelain insulator.

1. Start spark plug into cylinder head by hand to avoid cross threading.
2. Tighten spark plugs to 27 Nm (20 ft. lbs.) torque.
3. Before installing coil(s), check condition of coil O-ring andreplace as necessary. To aid in coil installation, apply silicone tocoil O-ring.
4. Install ignition coil(s). Refer to Ignition Coil Removal/Installation.

Usually somewhere on the engine or in the engine compartment, there is a sticker with the engine specifications. The spark plug gap should be included. If not .032 or an inch should be close.
Good luck