be 100% certain you dont have a leak cus i didnt think i did and couldnt figure out my **** mileage (7-9mpg) i threw some seafoam in it and seen it was leaking at the crossover and i couldnt hear it or see it otherwise. so i fixed that leak and did the spark plug non fouler trick on the rear o2 and now im getting 16-19 all city driving stop and go traffic
btw seafoam works wonders i run it every 3-4 months. last week my brother in laws camry was running like ****, idle was at like 1800 rpm abd just ran like ass, we tried changing everything to get the rpms down and no luck. we had got a couple bottles of seafoam when buying parts for ****s and giggle and as soon as i ran it threw 1/2 a bottle in the intake the thing dropped idle and started purring like a kitten
also what are your mods and what are you running for plugs tstat ect...
