If the cam timing slipped a whole lot, you could tell by the position of the
rockers. At TDC on no. 1, make sure both valves are closed.
----- Original Message -----
From: joe <chevy1@jps.net>
To: <MKlepp4335@cs.com>; <oletrucks@autox.team.net>
Sent: Saturday, January 01, 2000 12:01 PM
Subject: Re: [oletrucks] '48 Vs Y2K?
> The lack of dot showing on the flywheel could be that your 180 degrees
> out....meaning that it's just on the exhaust stroke and not the intake
> stroke.
>
> If the teeth are in fact chewed up, wouldn't you be able to see the rotor
> not turning for a second "when the missing teeth aren't contacting the
crank
> gear" when the engine is being cranked over?
> ----- Original Message -----
> From: <MKlepp4335@cs.com>
> To: <old-chevy-truck@onelist.com>; <oletrucks@autox.team.net>
> Sent: Saturday, January 01, 2000 9:42 AM
> Subject: [oletrucks] '48 Vs Y2K?
>
>
> > Truckers-
> > Is it possible my '48 3100 is not Y2K compliant? Here's the deal.....
I
> > was going to change the oil, so a long ride seemed the way to get her
> warmed
> > up. About three miles out (going up a slight grade in OD at 55 mph) I
> heard
> > a noise that sounded like engine pinging. It went away when I let up on
> the
> > gas, came back when I stepped down on the pedal. Almost immediately,
she
> > started to lose power, so I took it out of OD. Still losing power, it
> acted
> > like it was running out of gas (Just put in gas). Liberal amounts of
> choke
> > kept it from dying and got me past the very large dog that had taken
> chase,
> > but within 500 yards she stopped. It would refire only with massive
> amounts
> > of choke, but only to sputter dead again with much white smoke out the
> tail
> > pipe.
> > After towing her home I started the look/fix phase. Here is what I
have
> > done so far:
> > 1. Checked plugs - wet from all the choking otherwise good (.035)
> > 2. Checked points - slightly worn, replaced. (.020)
> > 3. Checked condenser - with a multimeter, not shorted.
> > 4. Checked coil with multimeter - not open.
> > 5. Replaced wires - wanted to do for some time.
> > 6. Rebuilt carb - float valve seemed very sticky.
> > 7. Checked timing - #1 piston was at TDC when rotor pointing at #1.
> (There
> > is no ball on my flywheel)
> > 8. Checked all rockers/pushrods - all go up and down, none bent.
> > 9. Checked vacuum advance & wiper motor for vacuum leaks, both OK.
> > 10. Checked fuel pump - good pressure and volume.
> > 11. Checked compression - 160 on all cylinders.
> > 12. Checked spark at plugs - OK, but seemed a little weak-no big blue
> flash.
> >
> > After all this was done attempts to start produced only a large plume
of
> whi
> > te smoke out through the carb (air cleaner ON) and vacuum wipers that
went
> > nuts. I assume this was some sort of backfire thru the intake.
> > Well, now I need some help. Don't yell, but when I rebuilt this
thing,
> I
> > reused the fiber gear on the cam to save a few bucks. Could this thing
> have
> > lost some teeth and slipped valve timing? How can I confirm it before
> > dropping the pan and ripping the whole front off the truck? Please,
give
> me
> > any and all ideas as I have come to the end of my expertise. Thanks.
> > Mike Klepp
> > '48 3100
> > Wichita Falls, TX
> > (At least my toilets and computer work)
> > oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
> >
>
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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