The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Low Idle, Rough Acceleration, Shakes a bit

duffs396 · 03-19-2017, 06:25 PM

As a continuation of my saga.... I've now discovered a black plug #6, all other plugs normal. I've done 2 engine flushes as the oil was very dirty and I originally though when I changed the intake manifold gasket, something may have fallen into the engine. I also now have a knock, but sounds louder than a valve tap. I thought about doing another engine flush as I really neglected the oil change the last 12 mos.
I short, the engine shakes when idling or accelerating, idle is low.... Have changed out most of the obvious. Any suggestions? 107K miles.Thanks.

03-19-2017, 06:25 PM	#6
duffs396 Registered User Join Date: Nov 2015 Location: advance Posts: 8	Re: Low Idle, Rough Acceleration, Shakes a bit As a continuation of my saga.... I've now discovered a black plug #6, all other plugs normal. I've done 2 engine flushes as the oil was very dirty and I originally though when I changed the intake manifold gasket, something may have fallen into the engine. I also now have a knock, but sounds louder than a valve tap. I thought about doing another engine flush as I really neglected the oil change the last 12 mos. I short, the engine shakes when idling or accelerating, idle is low.... Have changed out most of the obvious. Any suggestions? 107K miles.Thanks.