Fuel problem possibly found... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Tetanus Express · 12-17-2016, 10:54 PM

So I just bought a new project a couple of months ago but some things came up and life took over all my time and focus. So I had to let it sit for a bit. So fast forward to last weekend and I finally got time to start on my new project. As I go to move it in to the shop for some assessment of what all needs to be done and to get a game plan together it didn't want to crank right away like before. So the battery ran down pretty quick from sitting for a bit but I put a charger on it and charged up pretty quick. So I came to the conclusion that it wasn't getting any fuel. So I checked the fuel filter and yea it could have stood to been changed so I did. Still wouldn't fire up. So then I checked to make sure that fuel was making its way to carb and to my finding not really. So I put a new manual pump on it and still nothing. CRAP! So I then thought well maybe it has a little trash in the carb. So pulled it off to check it out and this is what I found. So my question to you all is... Have you ever seen a carb after it has sucked a tank of sugar gas? 😡 I am pretty sure it is sugar that someone thought my truck needed. I dug some out and let it dry and yes tried a very small portion lol and it was sweet and also had the obvious strong taste of gas. I wish knew who did this... Just 5 minutes is all it would take. Lol

Tetanus Express · 12-17-2016, 10:57 PM

Here is some of the gunk I dug out of one of the bowls.

wilkin250r · 12-17-2016, 11:36 PM

Sugar does not dissolve in gasoline.

**hatzie** · 12-17-2016, 11:57 PM

Lead compounds taste sweet too. Lead precipitation isn't out of the realm of possibility but that carb would need to be very old.

Sugar doesn't dissolve very well in gasoline but it will dissolve in water or Isopropyl Alcohol so if you had some condensation and sugar in the tank it will travel with water or drygas. Not sure why it would drop out of suspension tho.

Tetanus Express · 12-18-2016, 12:44 AM

Correct on the sugar not dissolving in gas. The carb is supposedly about 6 months old so... When I got the truck it had just had a new crate motor installed along with new carb and distributor and wires and belts. So I don't know it is still a mystery to me how it could run so good then just start acting up. But anyway it has made think about what my plans for this truck is. So I think I may want to go the 5.3 or 6.0 way. But I plan on dropping the tank to see if there is anything in the tank. I did also notice that the old filter was broke on the inside that did let trash by so it was like I didn't even have a filter. So I guess on to the next area for now.

12-17-2016, 10:54 PM	#1
Tetanus Express Registered User Join Date: Aug 2014 Location: Elkmont, AL Posts: 152	Fuel problem possibly found... So I just bought a new project a couple of months ago but some things came up and life took over all my time and focus. So I had to let it sit for a bit. So fast forward to last weekend and I finally got time to start on my new project. As I go to move it in to the shop for some assessment of what all needs to be done and to get a game plan together it didn't want to crank right away like before. So the battery ran down pretty quick from sitting for a bit but I put a charger on it and charged up pretty quick. So I came to the conclusion that it wasn't getting any fuel. So I checked the fuel filter and yea it could have stood to been changed so I did. Still wouldn't fire up. So then I checked to make sure that fuel was making its way to carb and to my finding not really. So I put a new manual pump on it and still nothing. CRAP! So I then thought well maybe it has a little trash in the carb. So pulled it off to check it out and this is what I found. So my question to you all is... Have you ever seen a carb after it has sucked a tank of sugar gas? 😡 I am pretty sure it is sugar that someone thought my truck needed. I dug some out and let it dry and yes tried a very small portion lol and it was sweet and also had the obvious strong taste of gas. I wish knew who did this... Just 5 minutes is all it would take. Lol Attached Images

12-17-2016, 10:57 PM	#2
Tetanus Express Registered User Join Date: Aug 2014 Location: Elkmont, AL Posts: 152	Re: Fuel problem possibly found... Here is some of the gunk I dug out of one of the bowls. Attached Images

12-17-2016, 11:36 PM	#3
wilkin250r Registered User Join Date: Sep 2010 Location: Lake Tahoe, Nevada Posts: 755	Re: Fuel problem possibly found... Sugar does not dissolve in gasoline. __________________ I know a little about cars, but if you have a question about electricity or sport quads, I'm your man!!!

12-17-2016, 11:57 PM	#4
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: Fuel problem possibly found... Lead compounds taste sweet too. Lead precipitation isn't out of the realm of possibility but that carb would need to be very old. Sugar doesn't dissolve very well in gasoline but it will dissolve in water or Isopropyl Alcohol so if you had some condensation and sugar in the tank it will travel with water or drygas. Not sure why it would drop out of suspension tho. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful. Last edited by hatzie; 12-18-2016 at 12:06 AM.

12-18-2016, 12:44 AM	#5
Tetanus Express Registered User Join Date: Aug 2014 Location: Elkmont, AL Posts: 152	Re: Fuel problem possibly found... Correct on the sugar not dissolving in gas. The carb is supposedly about 6 months old so... When I got the truck it had just had a new crate motor installed along with new carb and distributor and wires and belts. So I don't know it is still a mystery to me how it could run so good then just start acting up. But anyway it has made think about what my plans for this truck is. So I think I may want to go the 5.3 or 6.0 way. But I plan on dropping the tank to see if there is anything in the tank. I did also notice that the old filter was broke on the inside that did let trash by so it was like I didn't even have a filter. So I guess on to the next area for now.



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