Old gear train with no oil, may have gotten sticky or just worn enough to
stick parts now. I'ld keep an ear on it and see if new oil makes it go away
or if gets worse. Maybe the oil pump is getting clogged or weak with new
"work" of pushing oil up higher now! :-)
G. L. Grumpy's
Old Iron Ranch
Huntington, IN 46750
AD trucks and MM tractors
----- Original Message -----
From: "Durwood B. Darbin" <dhckdkcsk@hotmail.com>
To: <oletrucks@autox.team.net>; <old-chevy-truck@yahoogroups.com>
Sent: Saturday, June 14, 2003 11:29 PM
Subject: [oletrucks] Rocker arms & Grinding marbles?
> Hey list,
>
> My rocker arms were not getting any oil. One of the head bolts that has a
> small hole in the bottom normally lets oil get to the rocker arms but the
> hole was plugged with what appeared to be carbon. Anyhoo, I squirted the
> arms with oil to wash out the iron filings and changed the oil and filter.
> I ran the engine about 50 miles and changed the oil and filter again
because
> it really black. Then I added 1/2 quart of ATF to the new oil and ran it
> another 50 miles and changed the oil again. It wasn't as black this time
> but still pretty dirty. Now the engine has good clean oil in it and a new
> filter but now I intermittently hear something that sounds like grinding
> marbles and knocking coming from the engine. It is not a joyful sound, in
> fact it is quite irritating as well as worrisome. The sound only lasts
for
> a second or two and goes away only to return 15 - 30 miles later. The
> engine runs fine during the noise. I did notice that I have some 'green
> springs' and 'red springs' on the head if that makes any difference. Why
> would the engine run fine with no oil going to the rocker arms and act up
> when it has oil to the rocker arms? I'm perplexed. Please help.
>
> Durwood
> 51 Chevy 1/2 ton Deluxe 5 window
>
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