I own a 2001 Prelude. I started getting "bad egr valve" code from my
car's computer. I bought a mew egr valve ($180) and light came back on
same code. I have a friend that is a mechanic at my local Honda
dealership. He told me to drill to remove 4 melal plugs from the intake
manifold and clean the ports underneath those plugs. Honda sells
replacemrnt plugs for like $.15 each. Worked like a charm. Removed
large amount of carbon with air hose.
While putting the replacement plugs in the holes I knocked one of the
too far and it fell down into the manifold. Can this be a problem?????