Re: IML: Checking for Gas in the Oil
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Re: IML: Checking for Gas in the Oil



I think this will also make the oil turn black almost immeidately. There are other things that cause the same symptom, like poor crank case ventilation, but none of them are okay.

Paul W.


-----Original Message-----
From: hemidriver@xxxxxxx
To: mailing-list@xxxxxxxxxxxxxxxx
Sent: Wed, 6 Jun 2007 7:11 am
Subject: IML: Checking for Gas in the Oil


Friends....

Surely, you check your oil regularly. When you pull the dipstick, always SMELL the oil on it -- an gasoline odor means (1) a problem and (2) you need to solve problem and change oil.



-----Original Message-----
From: Frederick Joslin
To: mailing-list@xxxxxxxxxxxxxxxx
Sent: Wed, 6 Jun 2007 10:26 am
Subject: Re: IML: Fuel Leak



When I purchased my 69 Coupe it had a leaking fuel pump.

It took me a while to realize this. On day instead of just warming the car up in the garage and leaving, I warmed it up in the garage, pulled out and then came back into the garage. There was a pool on the floor which turned out to be gas. This explained the heavy gas odor and really bad mileage. 

When I did the first oil change after purchasing the car, the oil was especially thin and nasty. I figured it was simple from neglect. Now I think it may have had fuel in the oil. 

This seems like a good thing to check if you ever have a leaking fuel pump.  



----- Original Message -----
From: sosmi@xxxxxxxxxxx
To: mailing-list@xxxxxxxxxxxxxxxx
Subject: Re: IML: Fuel Leak
Date: Wed, 06 Jun 2007 13:39:51 +0000


That vent hole, has a two fold job. It is a pressure vent to keep one side of the pump diaphragm at atmospheric pressure, the second is a by-pass for fuel when there is a pump failure, which dumps the fuel on the ground rather than going in the crank-case.I would check the oil, to make sure there was no fuel dilution. By plugging or restricting the vent, you may have caused fuel to enter the crank-case.Dave.

 

-------------- Original message --------------
From: "tdcox" tdcox@xxxxxxxxxxxxx>

Thanks, Eric

That is my guess, too. Since the right side of the car was
excessively dirty
with an oily slick, I am assuming that gas mixed with rain to cause
the
problem. Since the fuel pump is the most likely candidate on that
side of
the engine (other than the fuel filter), that is where I am going to
start.

-----Original Message-----
From: mailing-list-owner@xxxxxxxxxxxxxxxx
[mailto:mailing-list-owner@xxxxxxxxxxxxxxxx] On Behalf Of Eric
Sent: Tuesday, June 05, 2007 11:00 PM
To: mailing-list@xxxxxxxxxxxxxxxx
Subject: IML: Fuel Leak

Tom,
Thank you for sharing your photos of your beautiful '56 coupe.
http://www.imperialclub.com/Yr/1956/56Cox/in dex.ht m
It's no wonder 20 people stopped for that beauty!

About your fuel situation. I had a mysterious raw fuel smell with my
'64
Crown Coupe. I never saw a leak on the ground but I did notice the
rubber
hose to the fuel pump was delaminating down to it's threads. I
thought this
was the source of the fuel odor, that it may be seeping from this
hose. I
put it on my long to-do list.

To make a short story more exciting, I'll explain how I learned the
real
source of the odor. I was being tailgated on a stretch of open hiway
a
couple of weeks ago. I thought I'd show the tailgater something so I
floored

the throttle. After losing him in a cloud of unburned hydrocarbon
droplets,
I realized he was lost in a whole lot more smoke than there should
be. Then
I heard a noise, felt a loss of power steering assist, and decided to
pull
my old smokey over to see what broke.

A few days prior to this, I noted one of the twin A/C - alternator
belts had

a twist in it around the bottom of the crank pulley. I had planned a
replacement of these belts soon so I left it as it was. This belt
then broke

when I floored the throttle, throwing it's twin off, as well as
throwing the

power steering belt off, answering my loss of power steering. The
broken
belt snapped apart the transmission coolant line compression fit
connector
causing transmission fluid to spray all over the compartment,
explaining the

large cloud of smoke.

I made short work of straightning the bent transmission line,
reattaching
the compression fit connector, refilling my transmission with fluid,
and
putting back the power steering and the remaining A/C - alt belt.
When I
started the car, I let it idle and watched for l eaks a t the
transmission
line fitting. It didn't leak but I did notice a substantial leak at
the fuel

pump. This fuel pump leak was in a spot unrelated to my snapped drive
belt
trouble and I could see that it was spewing gas onto the above
mentioned
fuel hose that had deteriorated.

On one side of the fuel pump, there is a round, drilled hole right
above the

diaphram. Fuel was being pumped out from this hole. As an emergency
roadside

fix, I found a disposed of cigarette butt and compressed it into the
hole.
That butt helped, but it did let a bit of gas to be spit out, and
provided a

wheezing noise. We got a kick out of my bronchitis afflicted filtered
fuel
pump leak.

I've not yet opened up the leaking fuel pump, but I suspect the
diaphram may

have ruptured long ago. I had a used fuel pump that I later replaced
it w ith >
and it is without this hole. Maybe this hole is an early warning
mechanism
to tell the owner that the pump is about to go? I have a new pump for
a
Slant 6 that does have a similar vent or bleed hole.

Short story of it is, you may want to check your fuel pump for leaks
with
the engine idling.

Hope my long mysterious leak tale helps your situation.

Eric
1964 Crown Coupe
________________________________________________
From: "tdcox"
Subject: IML: 2,000 mile trip
My wife and I have just returned from a nearly 2,000 mile trip in our
56
Southampton coupe.
...The only odd thing that we noticed on our return trip was that our
gas
mileage dropped in half, to about 7 mpg. I was pretty sure the timing
=
was off but didn=92t expect such a decrease. When we arrived home, I
washed
the
&g t; car and found that the entire passenger side of the car had a thick oily
substance all over it. Also, we smelled gas fumes on the last half of
=
the trip. Wonder if this could be a leaky fuel pump; the oil level
was fine,

so
I assume it is fuel related.
Thanks to the Webmonsters for adding pictures of our car to the
56 Imperials




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Fred Joslin








Fred Joslin



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