Quote:
Originally Posted by mmkkpro
Nobody had a bosh 3401 or k&n so I bought a Napa gold suppose to have anti drain back valve but after it sits fo a couple hours it has a rattle for about 3 seconds on start up. I ordered 2 bosh 3401s be here Tuesday. Thanks guys, she is running and sounds good, I have a 45, and 56 codes.
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Napa gold is a good filter.... the 3 second chain rattle is fairly normal after sitting and will probably still be there with the Bosch filter as well... Ive tried every filter between the 92 and my 90 ZR-1s and have always had a 3 to 4 second chain rattle after sitting..... one engine had 45k miles on it and my current one has 33k on it, it the noise is always there after sitting.
