[Chrysler300] Re: IML: fuel pump, thanx

[Philippe Courant <accf-club@xxxxxxxxxxxxxxxx>]

Hi all,
Thanks for all the replies i got from the 3 lists. Difficult to reply to 
each so i'll try to make a "global" answer...

>Any NOS pump you buy is going to have a diaphragm that cannot tolerate
>modern fuel, at least in the USA.  I don't know if Europe is using
>oxygenated fuels to meet air pollution rules or not, but if they are, you
>need to replace all rubber parts in the fuel system with modern parts. 
>
I agree with you ! Yes, in France we've two unleaded fuels, one is the 
SP98 (around 93 US octane rate) which is very agressive with rubber and 
the other is the SP95 (around 89-90 octane) which is less or no harmful. 
Since 3 years i used the 98 and i switch to 95 2 months ago. The car 
runs well with this lower octane gas but i've noticed that it runs at 
little higher t° (seen at gauge). I'll decrease a little the advance as 
someone told me.
I replaced all rubber hoses but not rubber diaphragm fuel pump or carb !!

>The fuel tank filter on the end of the sending
>unit. If it is old it can be partially plugged and at higher speeds starve
>the engine for fuel.
>
I removed it when i restored the tank 4 years ago .. I run w/o filter in 
the tank (but tank is as new, i cleaned it and covered the inside with 
special  epoxy resin).

>When you say you checked the filter I will assume you are referring to the 
>ceramic at carb.
>
Yes, it's the only filter i have (except the ones at inlet of the carb). 
It is like new, i bought it 2 years ago (and i cleaned it some days ago).

> have you check the carb float level??  sounds like the gasoline is 
> being sucked out of the carb faster than it is pumped in.

It's also another possibilitie i've thought. I adjust the carb 4 years 
ago when i renewed it. Not too much "drop float" level ? But it's easier 
to install first the electric pump and check..

At this time i think that the culprit is: - 70 % the pump - 25 % the 
float level - 5 % anything else (as carb inside filters, secondary 
vacuum diaphgram, clogged "new" ceramic filter)



-- 

Philippe COURANT (Pau, France)- Webmaster des sites ACCF et C-I-F

Imperial 1957 Crown convertible

Buick 1996 Roadmaster wagon

 

- American Car Club de France (ACCF) : http://www.accf.com

 

- Chrysler Imperial France (C-I-F) : http://www.ifrance.com/c-i-f

 

- Cadillac " Standard of Excellence " : http://www.ifrance.com/accf-cad

 

- SportsCars : http://www.ifrance.com/accf-sprtcar




[Non-text portions of this message have been removed]



------------------------ Yahoo! Groups Sponsor --------------------~--> 
Yahoo! Autos. Everything you need to know about buying 
or selling a car.  FREE Quotes, 360° Tours, Research,
Blue Book, Compare Vehicles, Buy Used
http://us.click.yahoo.com/kEZsdA/bwnGAA/YiGOAA/8LmulB/TM
--------------------------------------------------------------------~-> 

To send a message to this group, send an email to:
Chrysler300@xxxxxxxxxxxxxxx

For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/Chrysler300/

<*> To unsubscribe from this group, send an email to:
    Chrysler300-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/