[DeTomaso] nasty carb mess

Sun Oct 28 16:13:45 EDT 2012

I concur with you Dave. I might have gotten that 'special' slug of crap when the tank went dry too thus compounding issues. 

On Oct 28, 2012, at 2:45 PM, "David and Marilyn Bell" <davidabell at att.net> wrote:

> I still think the goop is arriving at the float bowl dissolved in a liquid,
> then plating out on the aluminum.  If the goop was immiscible in gasoline
> and just carried along with the flow then it would tend to settle out mostly
> in the bottom of the float chamber and also eventually plug up the fuel
> filter.  This stuff looks like it coats everything it touches.
> 
> Don't under estimate the power of ethanol to dissolve all kinds of things.
> The carbureted motorcycle forums (I have two carb bikes) are full of ugly
> stories and photos of plugged and corroded carburetor internals.  This
> problem has accelerated greatly since ethanol became a common gasoline
> additive.  The real issue is that alcohol and gasoline don't mix well and if
> they aren't stirred up regularly the ethanol will separate out and attack
> the aluminum and/or coat the insides with an ugly precipitant.  I'll admit
> that motorcycle carbs are more sensitive to corrosion and precipitants than
> autos just because the jets and channels are so tinly relative to car carbs.
> Still the same processes are at work.
> 
> I was talking to the service manager at NW Honda in Houston a few months
> ago.  He told me that since ethanol gasoline became common, they have
> learned to routinely put gas stabilizer in every Honda motorcycle/ATV they
> receive from the factory.  They do that because they got tired of
> flushing/rebuilding the fuel systems of brand new bikes that had been on the
> display floor for only a month or two before selling.
> 
> Sta-bil works well for me in everything that doesn't get used very
> regularly. I use it routinely in the Pantera, as well as my CBX (where I
> just spent $600 having all six carbs professionally cleaned and rebuilt), my
> wife's PC800 motorcycles, lawn mower, gasoline generator, pressure washer,
> etc.  Sta-bil won't clean up the goop that's already formed (I use double
> strenght Techron to help with that), but it does seem to keep the nasty
> stuff from forming.
> 
> Dave Bell
> 
> -----Original Message-----
> From: Haas, John [mailto:john at haasline.com]
> Sent: Sunday, October 28, 2012 11:16 AM
> To: 'David and Marilyn Bell'; 'CharlesMcCall'; detomaso at realbig.com
> Subject: RE: [DeTomaso] nasty carb mess
> 
> 
> I think it did get by the filter. I'd just rebuilt carb and cleaned the
> hard-line to it so it was clean. That only left about 20" of Teflon lined
> flex hose. This gunk is extremely fine but it settles out FAST. A tub of
> fresh gas cleaned it up quickly and the sediment fell right out. I also
> failed to mention that while running it a couple weeks ago I ran the tank
> out of gas and the pick up tube sock had been removed about 24 years ago
> when I ran out of gas and clogged that up. I'm sure I picked up a pile of
> crap then. Yesterday I pumped gas out via the fuel pump and this old gas is
> dark amber even after being diluted and it was full of black bits that leave
> a sticky rubbery residue behind. I reckon I'll drain and flush the tank and
> replace the fuel pump and the few inches of rubber fuel line I have. I'd
> better hurry as I'm not going to suffer the embarrassment of hosting a club
> event without a running car. It will be plenty challenging trying to relax
> at my Indian Princess and other family camping trip between now and then. Of
> course that's not the only thing needing done...
> 
> -----Original Message-----
> From: David and Marilyn Bell [mailto:davidabell at att.net]
> Sent: Sunday, October 28, 2012 10:26 AM
> To: CharlesMcCall; john at haasline.com; detomaso at realbig.com
> Subject: RE: [DeTomaso] nasty carb mess
> 
> I don't think that stuff passed through the filter.  It looks more like a
> precipitant to me.  Ethanol gasoline doesn't like aluminum or pot metal,
> especially if it sits for long periods.  Ugly stuff like that gets left
> behind.
> 
> Like you said, drive it more often - and a gasoline stabilizer is a good
> idea as well.
> 
> Dave
> 
> -----Original Message-----
> From: detomaso-bounces at realbig.com
> [mailto:detomaso-bounces at realbig.com]On Behalf Of CharlesMcCall
> Sent: Sunday, October 28, 2012 9:15 AM
> To: john at haasline.com; detomaso at realbig.com
> Subject: Re: [DeTomaso] nasty carb mess
> 
> 
> Wow! You are right - that is pretty ugly!
> 
> Charles McCall
> Raising Pantera Awareness Across Europe
> 1985 DeTomaso Pantera #9375
> http://www.poca.com/index.php/gallery/?g2_itemId=2323
> 
> 
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
> Behalf Of Haas, John
> Sent: domingo, 28 de octubre de 2012 14:51
> To: detomaso at realbig.com
> Subject: [DeTomaso] nasty carb mess
> 
> http://www.poca.com/index.php/gallery/?g2_itemId=38450
> 
> I finally thought I'd overcome some negative inertia from moving and having
> 3 young kids by getting my carb rebuilt. It ran great in the garage until
> the accelerator pump hydraulically locked up again. See what I found in the
> link above. Boy that's ugly, the sintered bronze filter didn't stop any of
> this from getting out of the tank. I DESERVE EVERY BIT OF IT FOR LETTING MY
> CAR SIT!
> 
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