Acura Repair: ignition wires, isuzu rodeo, 1995 isuzu rodeo

Question


Dear Mr. Adams:

I have a 1995 Isuzu Rodeo. (there are no Isuzu experts on the site, but this is a general question) It is a V6. For some reason it is
getting 10 miles per gallon. This seems a bit low. I've been thinking about changing the spark plugs and ignition wires.  The factory wires are 7mm.
I've been considering getting performance wires, (either 8mm or 9mm) with a lower resistance than the factory wires. Should this make a difference in milage & performace, and is there a
point when the wires are too thick? or have too little resistance. the performace wires claim to have 8 ohms resistance. IE would 10-12 mm be too much Why or and would 8 ohms be too little resistance? why not?

Thanks  Eric

Answer
I would replace them with 7mm wires due to the vehicle is manufactured to operate with 7mm wires. Changing the size of the wire may not effect the amount of spark immediately, but over a short period of time, it could. Theoretically speaking, if your coil delivers "X" amount of voltage on a 7 mm wire, increasing the amount of electrical current to the spark plug by using a larger wire could lower the life expectancy or operational function of the coil by causing the coil to actually work harder.
I hope this helps, it can be a little confusing.