Re: [Chrysler300] Carb flooding

Crap ethanol gas causes gumming and sticking of the needles in the open position, as the floats are at their lowest position when the fuel bowl is empty. The dried residue on the needle and on the float fulcrum will cause the floats and/or needle to stick in the open position if the carbs are left empty of fuel or the fuel evaporates over time. Whenever I have a car that has sat for a long period of time, before I try to start them, the night before I will place some fresh gas in the carbs through the vents (including bowl vents if so equipped) along with a small portion of carb cleaner. I let the mixture do its thing over night and in the morning, the cars will usually start fine with no flooding. Make sure the bowls are pretty full for the best effect. Ethanol gas can't go away soon enough - we are all sick of the junk, but it doesn't appear imminent because the stuff is a cheap product that works fine in nearly all the regularly used vehicles on the road.

Steve Albu

On Fri, Aug 28, 2015 at 8:12 AM, 'Rick Vitek' rpvitek@xxxxxxxxxxxxx [Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:

Thanks. As you note what puzzles me was the fact it happened to both carbs at the same time. Both went from working just fine to major problem after remounting so I wonder what went wrong. Needle problem was my first guess as both are fed from a common gasoline system that was disturbed. I wonder what other sources of raw gas flooding can happen in these types of carbs. I also wonder if anyone was familiar with some mistake in remounting that could cause this problem.

From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of William Huff czbill@xxxxxxxxxx [Chrysler300]
Sent: Thursday, August 27, 2015 2:49 PM
To: Rick Vitek; Chrysler300@xxxxxxxxxxxxxxx
Subject: Re: [Chrysler300] Carb flooding

I have read that the viton tips can be problematic when used with Ethanol gas, they start leaking for whatever reason. Some performance gurus recommend metal needles. Also might make sure that one of the floats hasn't opened up and started to sink, although I wouldn't think that would happen on both carbs at the same time.

Bill Huff

At 10:13 AM 8/27/2015, 'Rick Vitek' rpvitek@xxxxxxxxxxxxx [Chrysler300] wrote:

.

Image removed by sender.It must be because they started to tear down the Carter plant yesterday (see Hemming daily news yesterday)… Anyway I reinstalled the induction system on a G and had flooding at both carbs. I mean the fiber mounting gasket became soaked and bled through to the periphery. On removal of the carbs there was liquid gasoline on the bottom of the intake manifolds.

The previous work included removing the intakes and reinstalling them with new gaskets and new carb mounting gaskets. The mounting gaskets were Felpro .125 thickness fiber with separate holes for each bore (no cutout of the gaskets between primary bores or between secondary bores. The carbs worked well before removal and were not opened as part of the work.

Since the fuel lines were worked on I thought maybe some dirt was preventing the needle valves from seating (though I flushed the lines before installing). I checked fuel pressure at the carb inlet from the electric pump and it was 4 psi so it wasnâ€™t overpowering the valve. Upon taking the cover of the AFB off, the bowl gasket had been sealing well with no leaks. The needle valve and seat had no apparent dirt and the Viton tip was flexible. The floats were intact and swiveled freely.

Anyone know of some other issue(s)/system(s) (in the carb or not) I should check that may cause this type of flooding? Thanks.

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

_____

<https://www.avast.com/antivirus> Image removed by sender. Avast logo

This email has been checked for viruses by Avast antivirus software.
www.avast.com <https://www.avast.com/antivirus>

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