What's the correct sparkplug wires set-up for my 1999 318ti? I remember when I pulled the old ones out, it's simply 1234 from coilpack and 1234 to the cylinder (the plastic plug wire guide will limit your choices, base on the length of the wires) Someone mentioned a firing order of 1342 which looking at the top of cylinders (plugs off) is pretty much correct(the outside two cylinders are at the same height and two middle ones are same). Is the coil pack is taking care of the complicated sequence by simply following 1234 or the length of the wires? Thank you
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Re: Spark plug wires
The firing order is 1-3-4-2 and that is how it should be wired.. only then can the engine work correctly.
The front of car is no 1 cylnderand nearst to dashboard is no 4 cylinderand 2 and 3 in the middle.
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Go to Auto Zone or O'Reillys and have them hook up the code reader. The reader, if there is a misfire, will tell you which cylinder is not firing. That's your culprit. The firing order diagram is available online or in the store. It will tell you which plug is which.
Replace the plug. Ensure the gap is set correctly. That should be the end of it. If you really must visually inspect for spark then after pulling out the plug, re-attach the spark plug wire. Hold it by the wire end, where you are touching rubber to protect from shock. Have someone turn the engine over slightly. You wont have compression in the engine as the plug has left a nice size hole on the cylinder. But a turn or two of the key should produce a spark or two on the plug. If you dont see a spark, you may have a bad plug wire.
I'll bet you a $3 bill that your trouble is fixed back at step one. Replace the plug.
They usually aren't attached per se, they fit in a socket that is snug enough to hold them. But the spark plug wires trap them into position. So you can go ahead and pull the spark plug wire off.
One thing to remember, when you go to replace the spark plugs you won't be able to see if they are cross thread in their hole, so DO NOT use a socket until you are sure the are properly seated and not cross threaded.
Well you need a Rachet set with a spark plug socket for your Car. Then place the socket on the spark plug after removing the wire and turn counter clockwise to remove it. Counter clockwise is turning left if looking at a clock. Be sure not to break the spark plug wires when removing them. You must hold them tightly at the end and pull them off slowly and carefully. Once you have the spark plug end of the wire off,, put it aside but remember which spark plug it goes too. It's very important not to mix them up.
When putting your new spark plugs in be sure to set the gap correctly or buy a set of spark plugs with preset gaps. Then place the new plug into the hole and turn them clockwise to tighten by hand at first them with your sparkplug socket and rachet until the new sparkplug is snug. Not to tight. Just snug as it will tighten a bit more on it's own. Then replace the spark plug wire carefully.
Oxygen sensor only report the condition of the engine the rough running condition can range from a worn sparkplug wires to worn sparkplugs to valve problems to injector problems. with the cadillac deville a tune up should be the first attempt to smooth the rough idle with the inspection of the cap and rotor cap and rotor do have a tendancy to arc internally and create misfire so does sparkplug wire that can leak spark voltage to ground and create misfire. the spark plug wire especially if they are brittle and hard can create issues
change one spark wire at a time on the distributor.buy new set of spark plugs wires remove them from box.match old wires with new wires to use the correct length to each cylinder.now if you need to change distributor cap.mark location distributor cap.number tag plug wires on the distributor cap so you can remove plug wires on distributor cap so you can replace cap and rotor and put wires back on the distributor cap in correct place.remember change one plug wire at a time so you wont get confuse.
Those are as easy as they come these days.
Mark each spark plug wire with a piece of tape with the cylinder # written on it, so as not to mix up the wires.
Remove each spark plug wire by firmly grasping the wire by the boot (do not pull on the wire) and twist it back and forth a few times while pulling slowly. It should pop off without a great deal of effort. If it is seized and it breaks, you will have to replace the wire, or at the very least replace the terminals (if you can get some).
Use an air hose and blow around the base of each spark plug to dislodge any loose dirt that could fall into the cylinders (not absolutely necessary, but a good idea).
Remove each spark plug with a spark plug socket and extension and ratchet (I forget which size socket, it's either 5/8 or 13/16).
Check the gaps of each new spark plug (typically around 0.035 in).
re-install each new spark plug by hand (do not cross-thread them) and once you have ensured that the plug is threaded in properly, tighten the plug until it seats, and then tighten an additional 1/16 of a turn. Repeat this for the remaining plugs.
Re-install wires to the corresponding spark plugs.
to replace spark plugs remove spark plug wire boots. use special sparkplug socket or else you can break the sparkplug. to remove turn ratchet counterclockwise remove all four one at a time, make sure that the sparkplug gap is correct. most plugs come pregapped...read the box it will tell.you. do not overtigheten plug once it has fully seated give it a good snug....if you do one at a time you dont need to mark the spark plug wires. if you mix up the wires your car will back fire which could cause severe internal damage.
The coils will need to be removed first, then take compressed air and blow out the spark plug tubes, then you can replace the spark plugs. Use only Motorcraft Platinum Spark Plugs. Unless you know what you are doing, I would recommend a repair shop.
Find out what your spark plug gap is, and the size of plugs you require from your owners manuel. Purchase a Spark plug socket for your rachett (also a rachett extension if you dont have one) And a set of Gap Measurers. Pull out the spark plug leads from the base making sure you don't pull on the cable (can damage the lead if you yank on the cable instead of the boot) and then screw out the old sparkplug and check for damage/wear. Set the gap on your new sparkplugs and screw them back in using a torque wrench for the final turn or if you don't have one only hand (do the final turn without using the rattchet just grab the wratchet extension and twist with your hand).