a knocking noise from the frontend

nd4wheeler · 01-14-2006, 10:08 PM

when i was driving down the highway a knock started coming from the front end. when i stopped i found out the knock only occured when i had the pickup in gear and was accelerating. i took the valve covers off to check the lifters and springs, and to see if any of the valves were stuck. everything was working properly, so i checked the u-joints and they were fine. everyone that has looked at it is as confused as i am, cause the knock doesn't really sound like it's in the engine and we can't figure out were it is coming from.

so any info would be appreciated

scottie · 01-15-2006, 02:29 PM

if it sounds like its coming from the engine, check the oil pressure and how much oil is in your engine. i had something wrong like that and it was that i was losing oil pressure when i was accelerating and it caused one of my rocker arms to stick.
or maybe that piston slap we were talking about a few days ago????

scottie · 01-15-2006, 02:30 PM

..............oh, and what kind of truck and engine is it?

nd4wheeler · 01-15-2006, 08:07 PM

it's a 91 k1500. the oil level was good when i checked it and the oil pressure is good.

thanks for the idea

chevyguy · 01-17-2006, 09:33 PM

your just gonna have to try some different approaches to eliminate things. it is hard for me to find a knock from my keyboard if you cannot find it when driving it. You need to see if it increases with rpm, See it gear selecvtion makes a difference, Turning and so forth.

nd4wheeler · 01-20-2006, 08:48 PM

yeah, that's what i'm doing now, thanks

01-14-2006, 10:08 PM	#1
nd4wheeler Junior Member Join Date: Jan 2006 Posts: 4	a knocking noise from the frontend when i was driving down the highway a knock started coming from the front end. when i stopped i found out the knock only occured when i had the pickup in gear and was accelerating. i took the valve covers off to check the lifters and springs, and to see if any of the valves were stuck. everything was working properly, so i checked the u-joints and they were fine. everyone that has looked at it is as confused as i am, cause the knock doesn't really sound like it's in the engine and we can't figure out were it is coming from. so any info would be appreciated

01-15-2006, 02:29 PM	#2
scottie Senior Member Join Date: Jan 2006 Location: South Florida (Palm Beach), originally from south of BOSTON Posts: 644	if it sounds like its coming from the engine, check the oil pressure and how much oil is in your engine. i had something wrong like that and it was that i was losing oil pressure when i was accelerating and it caused one of my rocker arms to stick. or maybe that piston slap we were talking about a few days ago???? __________________ im a straight shooter with upper management written all over me

01-15-2006, 02:30 PM	#3
scottie Senior Member Join Date: Jan 2006 Location: South Florida (Palm Beach), originally from south of BOSTON Posts: 644	..............oh, and what kind of truck and engine is it? __________________ im a straight shooter with upper management written all over me

01-17-2006, 09:33 PM	#5
chevyguy Senior Member Join Date: Sep 2005 Location: ALABAMA Posts: 3,160	your just gonna have to try some different approaches to eliminate things. it is hard for me to find a knock from my keyboard if you cannot find it when driving it. You need to see if it increases with rpm, See it gear selecvtion makes a difference, Turning and so forth. __________________ When i die, i dont want to walk gracefully thu the pearly gates and turn in a unused body. i want to go sliding thru sideways and turn in a body that has been completely used up.

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01-15-2006, 08:07 PM	#4
nd4wheeler Junior Member Join Date: Jan 2006 Posts: 4	it's a 91 k1500. the oil level was good when i checked it and the oil pressure is good. thanks for the idea

01-20-2006, 08:48 PM	#6
nd4wheeler Junior Member Join Date: Jan 2006 Posts: 4	yeah, that's what i'm doing now, thanks

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