IHADAV8.com - Turbo Buick Tech, and Nonsense

Tech Area => General Buick Tech => Topic started by: trashmechlv on June 14 2013, 05:21:12 PM

Title: Downpipe cause knock reading?
Post by: trashmechlv on June 14 2013, 05:21:12 PM

Can a downpipe vibrating against the a/c evaporator box cause false knock readings on Scanmaster?

Title: Re: Downpipe cause knock reading?
Post by: Steve Wood on June 14 2013, 05:32:00 PM

yes, indeed...or if it bangs the rear upper control arm ear

Title: Re: Downpipe cause knock reading?
Post by: trashmechlv on June 14 2013, 06:04:48 PM

Thanks, I will add clearance downpipe to my "to do list"

Title: Re: Downpipe cause knock reading?
Post by: Steve Wood on June 14 2013, 09:37:08 PM

check the drivers side engine mount...that is often the culprit that allows it to happen