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Question
I've got a 4x4 1988 K5 Blazer with TBI 350. A couple of days ago I got in my truck to run some errands and everytime I stepped on the gas, it made a knocking sound. It sounded like it was right in front of my in the engine. When I took my foot off the gas, it would stop, but the truck doesn't have as much power as it should. Help? Advice?
Hi Miranda... could be a couple of things... first check cat converter and see if plugged, second check for timing chain gone bad, third check oil pressure, if below 5 lbs you could have bottom end problem...best bet would be to have a qualified tech, look at it...hope this helps.
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Robert Summers
Expertise
domestic auto/truck repair, auto body, painting. I currently own a large auto/truck/marine repair shop. 40 years certified 310S,310T,310B in ontario Canada
Experience
40 years certified 310S,310T,310B ontario qualified, 7 years with GM have owned my own shop now for the past 27 years.was automotive marketing director for large auto parts supplier.
Organizations
CFIB (current) past member AARO and APAA.
Education/Credentials
grade 12 plus 2 years college. many aftermarket training courses
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