|
Suspicions confirmed. The diaphragm is
blown. Also, your guess about the rebuild is also true; the disassembly
and rebuild is pretty easy. The only problem will be finding parts.
Many of the New Pumps are "hermetically" sealed;i.e., machine made and banded
w/o any simple disassembly, but they perform as any other new part
would, and cost little more than a repair kit.
b/t/w... Get the pump repaired before you do too
much driving. The little hole in the top is to relieve pressure change,
and is open to the Timing chain case and camshaft (the camshaft is what has the
eccentric lobe to cause the pumping action). If fuel is coming out, it
means fuel is going in...to the timing chain housing and the crankcase. It
is a good idea to change the oil when you change the pump.
IMHO.....
Mike Higgins
1955 Belvedere Sport Coupe
----- Original Message -----
Sent: Thursday, December 02, 2010 8:55
PM
Subject: [FWDLK] Fuel Pump...
Hey all,
A while back I mentioned I was pretty sure my fuel pump was leaking
(57 Dodge Coronet).
I was able to determine that fuel is actually spraying out the top of the
pump. From the service manual it appears to be Fuel Pump model
M2502S. The fuel appears to be escaping from the oval opening in the
rocker arm housing (at the top, furthest from where it connects to the
car). Looking at the exploded view of the pump, my first
inclination is to say the diaphragm is bad (or headed that way). It
does still pump gas (seems like a pretty good flow too), but clearly there
shouldn't be fuel coming out of the top of it. I suppose other
possibilities could include some of the internal pieces are going bad, but in
my experience with aquarium air pumps, the diaphragm is always the first (and
usually only) thing that goes bad.
I guess I'm just looking to confirm my suspicions (or the exact issue),
and then figure out the next step. A rebuild seems pretty simple...this
from a guy who is only looking at a schematic and has never attempted
one. If anyone has a used or rebuilt pump available, throw me a
price.
Ideas or suggestions are appreciated.
-Garrett
PS- Anyone in Central Ohio want to buy a 90-gallon aquarium or two?
They are preventing my Dodge from being housed in my garage.
*************************************************************
To unsubscribe or set your subscription options,
please go to
http://lists.psu.edu/cgi-bin/wa?SUBED1=l-forwardlook&A=1
*************************************************************
To unsubscribe or set your subscription options,
please go to
http://lists.psu.edu/cgi-bin/wa?SUBED1=l-forwardlook&A=1
| 
Back to the Home of the Forward Look Network