| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 142.1 | gummed up shaft | WFOV12::SCHRAFT | Peter C. Schraft 242-2235 | Tue Aug 16 1994 18:11 | 3 |
| Its all the gunk built up on the distributer shaft that won't let
it slide thru the bushings. Squirt some carb cleaner into the oil holes
on the side of the housing. That should desolve the gunk.
|
| 142.2 | HELP!!! | CXCAD::C_WILLIAMS | Hammer | Thu Sep 15 1994 09:01 | 29 |
|
I have a GM HEI distributor in my recently-purchased '71 Chevy
pickup. Having never delt with an HEI before, I took some time
a couple of weeks ago and tuned the engine up. When I took the
distributor cap off, the entire inside of the distributor was
coated with a fine red/brown residue; a powdery substance.
What is this stuff? Could it be a bronze/copper oxide from the
worn bronze/copper gizmos? 8-)
Also, after about a week and a half of running, the engine started
sounding like it had a small vacuum leak. I couldn't find the
leak. Two days later it sounded like a MAJOR vacuum leak. I have
checked everything related to a vacuum leak and have found nothing.
I have replaced my spark plugs and checked my wires. All is fine.
(The old plugs -- being only two weeks old -- look pretty bad.
The one and two cylinder plugs were burnt on only one side/one
half of the plug. Number eight looked as if it had never fired.
Most of the others were pretty fouled.)
I chose to pass the problem on to a highly-recommended mechanic.
He has also concluded it's not a vacuum leak. I was wondering if
perhaps it's something to do with the distributor? Could something
need fixing/changing in it? I don't understand (yet) the HEI's.
The mechanic is starting to believe it's a flat cam lobe. That
basically sucks.
Any suggestions?
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| 142.3 | | CSLALL::NASEAM::READIO | A Smith & Wesson beats four aces, Tow trucks beat Chapman Locks | Thu Sep 15 1994 11:45 | 5 |
| >
> What is this stuff? Could it be a bronze/copper oxide from the
> worn bronze/copper gizmos? 8-)
Rust residue from the mechanical advance counterweight assembly
|
| 142.4 | | CXCAD::C_WILLIAMS | Hammer | Thu Sep 15 1994 15:29 | 3 |
|
But it has a vacuum advance hooked up on it.
|
| 142.5 | | SSDEVO::SHUEY | | Thu Sep 15 1994 16:39 | 2 |
|
The mechanical advance mechanism is under the rotor.
|
| 142.6 | May be internal arcing | MSDOA::SCHMIDT | | Fri Sep 16 1994 08:25 | 11 |
| Folks,
This is all second hand but may be worth a look.. A friend of mine is
a major motor head and belives that what you are seeing is the symptoms
of internal arcing on the HEI. You may want to try a new cap and rotor.
We had discussed this 2 years ago when I was thinking about changing
the '73 400 small block I had to HEI. He had mentioned that as a sign
of poor operation in HEI's. I don't remember if there were any other
components ( like the ignition module ) involved.
Chuck
|
| 142.7 | | CXCAD::C_WILLIAMS | Hammer | Mon Sep 19 1994 10:49 | 11 |
|
This problem occured about a week after I changed the cap and
rotor.
My problem turned out to be a broken valve spring. As I said,
I bought the truck a while back. The person who built the engine
did a really bad job with the heads. I was just about to take
the valve covers off and adjust the valves when I opted to give
the truck over to this mechanic. Glad I did -- it's turned into
a little nightmare!
|