5RUNNERZ
New member
ok so probably a few months ago i had my good buddy who is a toyota master tech come over and we ran some engine cleaner through the engine and i put new plugs in the new ones were single electrode plugs but i got them through toyota who has my vin number and sells everything to me cheaper then the internet so i did not second guess them and my buddy said that they are fine to use. until i just noticed this

now i am worried that i ****ed something up, i have noticed way worse fuel mileage i just thought it was the summer fuel and hotter weather but im getting like 14 mpg down from close to 17. i also pull a big (for the 4runner) boat, but it never got that bad before. i also did not change my wires because i have always just replaced them once they go bad, so i am wounding why so many people just replace them part of there tune up?? so please let me know what is going on!!!:attention:

now i am worried that i ****ed something up, i have noticed way worse fuel mileage i just thought it was the summer fuel and hotter weather but im getting like 14 mpg down from close to 17. i also pull a big (for the 4runner) boat, but it never got that bad before. i also did not change my wires because i have always just replaced them once they go bad, so i am wounding why so many people just replace them part of there tune up?? so please let me know what is going on!!!:attention: