My new truck.. 1972 C-20

[Pipesmatt]

Hey guys, im new to the site and i just wanted to say hello! My names Matt snd i bought a 1972 C-20.. Thanks for adding me.. im here to learn more about my new buy and save some cash by tinkering on this bad boy myself.. sooo, ive had a problem with my new Quadrajet carberator.. it would run fine for a day, then she would act like the idle was to low and stall.. after taking the carb off, i noticed sand in the carb filter.. i automatically checked my inline filter and sure enough it was full of sand too... i pulled my gas tank today and cleaned it out... absolutely no rust, but i got about a half cup of this weird looking green sand... this stuff is so fine, it got through both filters... im just at a lost of words... i thought maybe the previous owner sand blasted the tank but this sand is getting through a 20 micron filter... very weird.. but yup, thanks again for the add and im sure you guys will be hearing from me... have a great evening!

[Pipesmatt]

Work in progress

[Gmc.guy]

Originally Posted by Pipesmatt

Work in progress

I have seen a JD excavator that was run all day after the hyd. cap wasn't put back on and it collected enough dust in 10 hours to restrict filters and throw a light in the dash Maybe the cap was lost or not closed tight and road dust got in there before it was replaced? I would say it's likely contamination from a low level tank at a station.

[Pipesmatt]

Right on.. thanks for the reply.. it does have a metal locking gas cap, but its pretty wobbly/not a snug fit... i purchased a cheap plastic one from the local autostore but same thing, a little loose... if i just filled up and take a sharp turn, gas spluges from the fill tube.. i do go to the beach alot, can it be getting sucked into the tank? When i got the truck it had a vented gas cap, thats whats on it now....

[Gmc.guy]

I don't think driving around the beach would do it. I meant hours of gravel roads with a dust trail behind you. Maybe kids at the beach threw a handful in

[El Dorado Jim]

Originally Posted by Gmc.guy

I don't think driving around the beach would do it. I meant hours of gravel roads with a dust trail behind you. Maybe kids at the beach threw a handful in

I think someone had to have put sand in there, that is an old trick when you didn't like someone.....Nice truck and welcome to the forum...I wish my wife woud go along with me buying another truck with a utility body, would be handy for my welder and all my tools, I have a utility body trailer now but would love to have another truck.....not going to happen, have tooo many trucks now

[flashed]

I cant answer the sand question but welcome and you found a nice looking truck .I like the utility bed on it ,you going to keep it ?

[Pipesmatt]

Yes sir! I work in the construction field, these boxes are a life saver! But yeah, i bought this truck from Craigslist for $3,600.. it has a rebuilt 1979 350 in it.. love this thing..

[1972BlueC20]

Not sure about the sand but I'd replace the sending unit, fuel lines, fuel pump, fuel filter and buy yourself a Holley or Edelbrock or get the Quadrajet professionally rebuilt. Start with a clean fuel system from tank to carb. That sand has to have gotten into every part of the fuel system.

If you get a Edelbrock or Holley, you might want to get a specific pump and get yourself a fuel pressure gauge too and maybe a pressure regulator as well.

Best of luck.

[Pipesmatt]

Im in the process of doing so right now.. i just pulled and cleaned the tank.. pulled the fuel lines and replaced the inline fuel filter and also added another just to be safe.. trying out a different filter. And the quadrajet was professionally installed and tuned by my mechanic.. he is stumped on the sand as well.. because of how fine it is... she runs fine with original quadrajet, but not the new one i got from Carquest.. dies/stalls on me after a few hrs of driving.. the truck is my daily driver, but once i found out about the sand, there no way in hell im goin to drive without being certain that its all out of her system.. Heres a pick of the sand i filtered out after the tank cleaning, dumped half of by accident but there was alot. Putting her back together 2mro..

[1972BlueC20]

Wow crazy man!! Never seen anything like that.

Good luck. Be careful adding more than 1 filter it can cause problems. 1 filter should be sufficient if it's a quality filter.

[LockDoc]

Originally Posted by Pipesmatt

Im in the process of doing so right now.. i just pulled and cleaned the tank.. pulled the fuel lines and replaced the inline fuel filter and also added another just to be safe.. trying out a different filter. And the quadrajet was professionally installed and tuned by my mechanic.. he is stumped on the sand as well.. because of how fine it is... she runs fine with original quadrajet, but not the new one i got from Carquest.. dies/stalls on me after a few hrs of driving.. the truck is my daily driver, but once i found out about the sand, there no way in hell im goin to drive without being certain that its all out of her system.. Heres a pick of the sand i filtered out after the tank cleaning, dumped half of by accident but there was alot. Putting her back together 2mro..

That looks like foundry sand for making casting moulds. I'm with custom10nut, somebody got Po'd at a previous owner (or you) and dumped it in the tank....

LockDoc

[67chevy_hotrod]

I love your truck man!

[projectking]

That thing is sweet! Congrats on the baby!

[Pipesmatt]

Thanks man! Im super stocked!!

[projectking]

That's a great picture, did you put a car seat in the center? I've got my third on the way and plan to turn mine into a crew cab.

[Pipesmatt]

Yes sir, he sits in the center! He loves this truck just as much as i do lol.. only thing that puts him to sleep when hes super fussy.. congrats bro! But yeah, alot of people talk sh#@ that i ride around with him, but this truck is waaaay safer than these new plastic ones! We just got a 2015 Jeep Renegade for a family vehicle, but i feel safer driving my truck than that thing...

[projectking]

Thanks man! That dog loves it's new playmate!

Newer vehicles are designed to take the impact and are safer but I don't see any laws being broken, I went all over the place in a '32 fordor sedan when I was young and I turned out ok!

[Benny-]

Hey I'm with ya on that! The kids absolutely love riding in the truck. They're up where they can see out the front. Makes my day having mine ride with me.

[Pipesmatt]

Hell yeah, Awesomeness!!!!

[In The Ten Ring]

I would most definitely get that sand out of everything. I'd clean out the tank, replace all the lines, new fuel pump, and have the carb cleaned.

You may have already done all that.

Did I spy a class fuel filter? If so, those aren't well liked on this forum! Fire hazard so I read.

Great looking truck: the more I think about it the more I want a utility bed. I just carry so many tools around and for me, trucks are for working. I don't want to lose bed space so I may have to find a truck with those shallow boxes that replaced the stepside fenders.

You take care of that family now brother!

[68Gold/white]

Beware of those glass fuel filters. They look like they'd do the job, but they only catch the big rocks that are in the tank. The clear plastic drug store filters are a potential fire waiting to happen. Get a metal filter, Wix 33032 for 5/16 line or 33033 for 3/8 line. Just trying to be helpful...

[Pipesmatt]

Wow, good to know.. yeah its a glass one, i have it connected under my passenger side door, and i have a plastic one before my fuel filter... shes running great now and the filters are staying clean. Thanks alot guys! Appreciate the advice! Definitely will get the metal ones, i just like being able to see the gunk (if any)..

[Pipesmatt]

Ok so i caught a little rust, but no more sand!