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
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