I have a severe knocking sound in the front of my engine. on 1998 GMC Sonoma

My truck is a 98 GMC Sonoma and last night I was turning into a parking lot when the knock started, its been getting progressively worse and now just 15 miles later its horrible. I was curious if i could get someone who had the same problem describe their symptoms? Maybe then I can narrow it down to the timing gears with out digging into it. Thanks so much.

by in Tamworth, NH on July 25, 2014
1 answer 2 comments
ANSWER by on July 25, 2014
Take the belt off and see if noise stops.
COMMENT by on July 25, 2014
I did this morning and it persisted, what are your thoughts on the timing chain tensioner? could that make that loud of a smacking sound?
COMMENT by on July 25, 2014
It ain't the chain on this engine!!... Most likely deeper, sorry... Have a mechanic listen to it.

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