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Old 01-29-2018, 12:47 PM   #21
SeaSlugs
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Default Re: Runs for about 10 minutes and the just quits

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Originally Posted by Ernie Vitucci View Post
Tank junk suggestion...If the tank is dirty, one can drain it and let it dry out overnight and then take the hose of your shop vacuum and then vacuum out the tank the following morning. You will most likely hear and feel 'Junk' coming up the hose. I'll grant that you can't get everything out of the tank, but if you do this a couple of times, you will get a great deal of the junk out of the tank. I have also put a second glass sediment bowl in the fuel line, like one from a 55 Thunderbird or such...put it level in the fuel line and put a good sized magnet in the bowl...the car will run much better and the magnet will catch lots of fine stuff that would clog up the carburetor. Ernie
PLEASE do not do this.... unless your life insurance and homeowners insurance and car insurance is paid off and you got an extra life in your pocket...

shop vac + explosive fumes = huge bang.
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Old 01-29-2018, 02:31 PM   #22
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Default Re: Runs for about 10 minutes and the just quits

No,No,No. Do not vacuum the tank. The fumes will ignite in the vacuum and explode and burn. Also don't assume without verifying that the fuel is starving. see#13.
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Old 01-29-2018, 03:22 PM   #23
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Default Re: Runs for about 10 minutes and the just quits

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Originally Posted by Ernie Vitucci View Post
Tank junk suggestion...If the tank is dirty, one can drain it and let it dry out overnight and then take the hose of your shop vacuum and then vacuum out the tank the following morning. You will most likely hear and feel 'Junk' coming up the hose. I'll grant that you can't get everything out of the tank, but if you do this a couple of times, you will get a great deal of the junk out of the tank. I have also put a second glass sediment bowl in the fuel line, like one from a 55 Thunderbird or such...put it level in the fuel line and put a good sized magnet in the bowl...the car will run much better and the magnet will catch lots of fine stuff that would clog up the carburetor. Ernie
Very dangerous to do even after draining tank, Metal will still hold fumes and can explode
, not many people will weld on a drained cleaned out tank!!!!!!!!!!!!!
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Old 01-29-2018, 03:32 PM   #24
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Default Re: Runs for about 10 minutes and the just quits

The same goes for using a vacuum to clean up the old gasket material when replacing the gas gauge components. Resist the temptation to use the vacuum or you may likely suck gas fumes into the vacuum where the sparking brushes in the vacuum motor will light things off.

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Old 01-29-2018, 03:37 PM   #25
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Default Re: Runs for about 10 minutes and the just quits

A guy I knew hocked up a hose to the exhaust of his modern car, ran it into the tank and the welded it. No oxygen so no explosion.
I would not try it but he did.
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Old 01-29-2018, 03:55 PM   #26
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Default Re: Runs for about 10 minutes and the just quits

condenser
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Old 01-29-2018, 05:59 PM   #27
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Default Re: Runs for about 10 minutes and the just quits

condensor
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Old 01-29-2018, 07:21 PM   #28
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Default Re: Runs for about 10 minutes and the just quits

I had an unusual one about 12 years ago. Same issue as you described. Turned out the add on pipe on top of the shutoff inside the tank had come loose and fall off. It was rolling around in the tank as you drove. It would eventually end up just over the hole that the gasoline flows into at the center bottom of the tank. The piece of pipe would then, in turn, block the flow of fuel down the line to the shutoff and carb. If you sat and waited for about 5 minutes, the flow of gas got around the blockage and the car would run for another 5 to 10 minutes and then would repeat the situation once again. A long pair of tweezers grabbed the culprit out and never had a problem since.
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Old 01-29-2018, 07:23 PM   #29
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Default Re: Runs for about 10 minutes and the just quits

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condensor
That's 2 condenser in 2 hours. You need to buy better quality condensers.
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Old 01-31-2018, 02:38 AM   #30
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Default Re: Runs for about 10 minutes and the just quits

Does it run and stop in 10 mins NOT being driven?

Easy elimination check whether fuel or spark.
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Old 01-31-2018, 04:44 AM   #31
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Default Re: Runs for about 10 minutes and the just quits

Already found the solution to your problem, "tagroff" ?
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Old 01-31-2018, 09:02 AM   #32
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Default Re: Runs for about 10 minutes and the just quits

I got interested in this thread because I also have a '28 RPU and the exact same thing happened to me some time ago. It turned out that the gas cap vent was clogged as others have mentioned.
The other thing that interested me were the gas tank postings. Back in 1960 when I was stationed in the army in southwest Germany I had a 10 year old Mercedes 170S. Two of my friends and I had leave and decided to drive to Paris in it. We didn't get far when it started missing badly. We pulled in to a Mercedes dealer in Saarbrücken and they found that there were a lot of leaves in the gas tank. They fished a lot of them out so I paid them and we continued on. We only got about 50 km or so when the problem continued. We stopped in an auto repair shop in a little French town and my buddy, who spoke some French, explained the problem to the mechanic. He put the car on his lift and then drained the gas. Next he took a cutting tool and cut a hole in the tank. Lots of leaves came out which lead me to believe that I had been vandalized. After that he welded a patch on it with an acetylene torch. All three of us backed up when he did this but nothing bad happened. I paid him and we went on to Paris and had a good time there (another story).
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Old 01-31-2018, 02:53 PM   #33
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Default Re: Runs for about 10 minutes and the just quits

In my case, it's the needle valve, sticks occasionally. I carry a small hammer and just tap the side of the carb and it always starts after that. I'll take it out at some point this winter and use carb cleaner and a Q-tip....
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Old 02-01-2018, 08:42 AM   #34
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Default Re: Runs for about 10 minutes and the just quits

Its been a few days and will be interesting to hear what he found.

It should be fairly easy. When it quits, check for secondary spark ASAP. If there is spark, check for a good solid fuel flow.
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Old 02-01-2018, 08:58 AM   #35
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Default Re: Runs for about 10 minutes and the just quits

You should try to deal with a tank that LITTLE KIDS added Berries from a Chinaberry Tree +&%^%$$%#@--- Or a roaming GUM WRAPPER, or a Handi-Wipe, disintegrating in the tank. Or when Little Kids topped off the tank, with the GREEN Garden Hose!!!!
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Old 02-01-2018, 12:21 PM   #36
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Default Re: Runs for about 10 minutes and the just quits

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I have a 1928 it starts fine runs like a top for about minutes then quits and won't retire.
Any updates????
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Old 02-02-2018, 09:19 AM   #37
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Default Re: Runs for about 10 minutes and the just quits

Check the plugs after it shuts down .
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Old 02-02-2018, 12:09 PM   #38
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Default Re: Runs for about 10 minutes and the just quits

Well, looks like he mighta/did use the vacuum.
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Old 02-02-2018, 01:07 PM   #39
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Default Re: Runs for about 10 minutes and the just quits

so what was the root cause of failure?
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Old 02-02-2018, 08:38 PM   #40
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Default Re: Runs for about 10 minutes and the just quits

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Well, looks like he mighta/did use the vacuum.
Oh I hope not! I think it was something simple! And he got it going, he’s probably been on a nice long drive.
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