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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.
Sparkplugs go down into the engine. You have as many as cylinders you have. Four cylinder, four plugs, six cylinder, six plugs. The plugs carry spark through the wires that hook to your distributor cap. Most caps are located on the right of the engine. That cap hooks to your distributor. So, if you have a four cylinder engine, you have four wires. You should see them crossing the engine block. The plugs are down in the engine block. The wires go into the engine block. Unless you have coils, which look like a small square, it has plugs.
Hi: If this is your 1st time to Change your Spark Plugs, I recommend that you First of All Get the Correct Spark Plugs from your Auto Parts Store, Then Locate your Spark Plug Wires which run from your Distributor Cap to your Spark Plugs.If you have a V-8 There will be 8 if you Have a V-6 Then You'll have six Spark Plug Wires and 1- COIL Wire which is located in the Center of your Distributor Cap to your Coil. It is the Shortes Wire.I Recommend you ONLY do 1-Spark Plug at a Time, This will Prevent you from getting any of your wires Crossed which will Cause your Engine to Run Rough ,Back Fire or Not even Start,So just Pull off 1-Wire From Spark Plug and one Wire From Your Distributor Cap, You'll Need a Spark Plug Socket Probally 5/8th in. And a Ratchet and 2- Different Size Extensions to beable to reackh all your Spark PlugsNOTE!! Buy you a Spark Plug Wire Tool there not very Expensive but well worth it,This was you Can Pull the Wires with out Damaging Your Wires.And you Might Want to Put NEW Spark Plug Wires On as well, If So and I do Recommend This. And Again Just do 1- Wire and Plug At a Time So you'll know you Have Not Crossed any Wires. Hope This Helps You ,Please Respond by Voting on This Problem And How it Helped You. Thanks From WYOCWBOY
You are correct in your idea about how the plug wires are attached. If you want to duplicate control wiring you would need to obtain the wiring diagram of the brand of ignition system you want to duplicate. (MSD etc. These systems also require a small battery in order for them to operate. Wiring to distributor was far less complex when vertex type magneto distributors sere used as all that was required was a ground wire to shut them down (exactly like your lawnmower works), As far as plumbing, all systems need to meet safety standards set forth by the NHRA but aside from meeting those standards, each engine builder decides where to locate such items as primary and secondary fuel injectors etc. If you go to the NHRA website, you may be able to find a decent photo of someones engine...that may be helpful. Also check the rule book for such items as kill switch location, brake, chute release etc.
A diagram may not be needed as its a reasonably easy fix to do on your own.the distributor ca p will only fit on properly one way because at the base of the cap locaters can only fit the distributor if they line up.When doing the spark plug leads do them one at a time and if nessecary write or mark leads as 1,2 etc .The rotor can only fit on one way but put a mark on the distributor to show where the rotor was pointing when you took it off and if it still points there when the new one is fitted.When changing distributor cap and leads they have to go to the correct place.Pays to mark the outside of distributor cap where the locating bits are On the new and old one.Fit the new cap and rotor then take a spark plug lead and fit to new cap 1 at a time.You can tell by lining up the marks on the outside of the distributor cap when you hold them one on top of the other.Good luck