Squeaky at idle
Super Moderator
Joined: Jan 2006
Posts: 1,858
From: Lumberton, Texas
RE: Squeaky at idle
One way to check to see if the belt is squeaking is to spray belt while running with WD 40. WD acts as a temporary belt dressing and if the belt is squeaking it will quit temporarily. [8D]
Thread Starter
Joined: Feb 2007
Posts: 23
From:
RE: Squeaky at idle
I did the WD-40 thing and I think it isn't the belt. It's more of a tapping sound when it's a bit cold out at idle. It goes away once I start running but comes back at idle. I've read elsewhere that it might be piston slap? So I'm not sure if I should take it seriously, or if it's a non-issue. I'm wondering if the last owner used the recommended oil, because it wasn't doing this when it was pretty warm out. Seems that now that it's a bit colder, that's when the tapping has started.
Super Moderator
Joined: Jan 2006
Posts: 1,858
From: Lumberton, Texas
RE: Squeaky at idle
Can you tell if it is side specific (left bank, right bank)? Might be a lifter. Change your oil and put in a quart of Rislone. Might be a sticking lifter. You can get a piece of heater hose 2 or 3 feet long, put one end to your ear and use the other end to listen around the engine. The hose will isolate the noise above engine noise.
Joined: Jul 2006
Posts: 2,091
From:
RE: Squeaky at idle
ORIGINAL: mech259
Can you tell if it is side specific (left bank, right bank)? Might be a lifter. Change your oil and put in a quart of Rislone. Might be a sticking lifter. You can get a piece of heater hose 2 or 3 feet long, put one end to your ear and use the other end to listen around the engine. The hose will isolate the noise above engine noise.
Can you tell if it is side specific (left bank, right bank)? Might be a lifter. Change your oil and put in a quart of Rislone. Might be a sticking lifter. You can get a piece of heater hose 2 or 3 feet long, put one end to your ear and use the other end to listen around the engine. The hose will isolate the noise above engine noise.
Engines with some mileage on them can normally produce a little tappet noise, can't they? Just curious as to your opinion on this, as ours does have a weeeeeeeee tap when it's cold... hardly noticeable unless you really squint your ears...
Super Moderator
Joined: Jan 2006
Posts: 1,858
From: Lumberton, Texas
RE: Squeaky at idle
That is a sign of the lifter bleeding off oil. Fairly common with hydraulic lifters with some age on them. The springs in them get weak with age and don't have enough tension until oil pressure reaches them, so they produce a little tappet noise. [8D]
Joined: Oct 2006
Posts: 924
From:
RE: Squeaky at idle
ORIGINAL: raisinbran
you can use a broom handle, put it on various parts of the engine and put your ear next to the handle and narrow down where the noise is coming from.
you can use a broom handle, put it on various parts of the engine and put your ear next to the handle and narrow down where the noise is coming from.
Thread Starter
Joined: Feb 2007
Posts: 23
From:
RE: Squeaky at idle
ORIGINAL: mech259
That is a sign of the lifter bleeding off oil. Fairly common with hydraulic lifters with some age on them. The springs in them get weak with age and don't have enough tension until oil pressure reaches them, so they produce a little tappet noise. [8D]
That is a sign of the lifter bleeding off oil. Fairly common with hydraulic lifters with some age on them. The springs in them get weak with age and don't have enough tension until oil pressure reaches them, so they produce a little tappet noise. [8D]