Re: [Chrysler300] Re: AUXILLARY FUEL PUMP

[retromobilia@xxxxxxxxxxx]

I would never run an electric pump before the mechanical pump because ... On numerous occasions when the mech. pump diaphram failed due to mod. fuel it allowed a direct passage to the engine oil sump. I cannot imagine what would happen if the mechanical pump failed and the electric continued to pump and the car did not stop for several miles ........? 


J D Jung 
Retromobilia.net 

----- Original Message -----
From: "Ryan Hill" <ryan_hillc300@xxxxxxxxxxx> 
To: paulholm@xxxxxxxxxxxxx, chrysler300@xxxxxxxxxxxxxxx 
Sent: Friday, October 14, 2011 11:24:40 AM 
Subject: RE: [Chrysler300] Re: AUXILLARY FUEL PUMP 


Many of us have run electric pumps alone that way without incident but it's dangerous if you're running a mechanical pump as well, especially with modern fuels that seem to deteriorate the mechanical pumps faster than in the good old days. 

Also, if you're running an electric pump full time as your only pump on a carburated car, I would think you should have a low oil pressure kill switch or inertia switch installed in the event of an accident where the key is not turned off. Nothing like having a fuel line rupture and a pump continuing to run and spray raw fuel all over. 

Ryan Hill 




To: chrysler300@xxxxxxxxxxxxxxx 
From: paulholm@xxxxxxxxxxxxx 
Date: Fri, 14 Oct 2011 13:54:07 -0400 
Subject: Re: [Chrysler300] Re: AUXILLARY FUEL PUMP 






On 10/14/2011 1:27 PM, Ryan Hill wrote: 
> 
> One important thing to remember when running an auxiliary electric pump like this. If the electric pump is left running and your mechanical pump fails, you could potentially fill your engine with fuel. (If the diaphragm fails, it will leak internally) The damage can be catastrophic! Also, in the past, some have mentioned the convenience of having a second pumping source to limp home on in the event their mechanical pump fails......this should only be done after bypassing the mechanical pump for the same reason. 

> Make sure the pump is being shut off, I would set it up with a push button rather than a switch so it's only on when I push it to prime the carb. 

> Ryan Hill 

way back when, we used to just wire the pump to the 'hot when key on' 
source that way if the key was off and out the pump was Not running 

-- 
Paul Holmgren 
Mine: 2 57 300-C's in Indy 
Hers: 05 PT GT R/T HO Stage 1 
Hoosier Corps L#6 





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