Recent content by franshisca

so i have 1994 jeep cherokee 2.5 liter smog people gave me a paper to test what was wrong they said the ppm is at 2024 ppm and i need it 500 ppm. they said check for vaccum and exhuast leaks. cant find any. next thing to check on my list iis the exhuast manifold. were would common vaccum leaaks...