Page 1 of 1

My 3tc keeps shutting off

Posted: Mon Jul 08, 2013 4:06 pm
by Cochese35
I was going to swap it out but decided its best to keep it.
I turned the car on with a little bit of gas to the carb.
I drove it around the block and died the second time I tried.
When I press the gas, it sounds like its not sucking gas. I turned it
on again and let it idle but when I gave it gas, it died again.
Now it won't start. What do you guys think it is?

Re: My 3tc keeps shutting off

Posted: Mon Jul 08, 2013 5:29 pm
by McKenney
bad fuel pump, too rich flooding it out, mine did something like this when I had a bad coil... a lot of things it could be. start by checking the fuel pump

Re: My 3tc keeps shutting off

Posted: Mon Jul 08, 2013 8:41 pm
by Cochese35
I thought it would be the fuel pump too but my guy said it's relatively new and it's probably the port plugs under the header (its missing two) or a leak from the carb since the vaccum delete. & apparently the fuel filter was bypassed (Idk why you would do that). How could I test the fuel pump?

Re: My 3tc keeps shutting off

Posted: Wed Jul 10, 2013 11:46 am
by milchmann
You can test a fuel pump with a volt meter

http://www.youtube.com/watch?v=SVWLMHvX5CA

I would check all of the vacuum lines first personally. Especially on and around plastic canisters.

Re: My 3tc keeps shutting off

Posted: Wed Jul 10, 2013 4:28 pm
by SkabRock5
3TC mechanical fuel pump are about 30 bux at autozone. i wonder if it's the timing that's way off.

Re: My 3tc keeps shutting off

Posted: Wed Jul 10, 2013 4:59 pm
by milchmann
SkabRock5 wrote:3TC mechanical fuel pump are about 30 bux at autozone. i wonder if it's the timing that's way off.
That was another though I had as well... firing sequence too.

On another note. I have no idea what I was thinking when I posted that other "how to test your fuel pump" deal ... yours is mechanical, the one I sent is for electrical. This one is correct

http://www.youtube.com/watch?v=LL_L2BINJho

This is a decent explanation as well

http://www.ehow.com/how_7620101_test-me ... -pump.html

Re: My 3tc keeps shutting off

Posted: Wed Jul 10, 2013 5:37 pm
by SkabRock5
Another possibility could be that the distributor itself could bo off by one tooth. It has happened to me during reassembly.

Re: My 3tc keeps shutting off

Posted: Wed Jul 10, 2013 6:47 pm
by dr.occa
SkabRock5 wrote:Another possibility could be that the distributor itself could bo off by one tooth. It has happened to me during reassembly.

Get 'er done then and report your findings. :action10:

Re: My 3tc keeps shutting off

Posted: Wed Jul 10, 2013 7:25 pm
by SkabRock5
Lol Jonas. It's not me with these current car issues.

Re: My 3tc keeps shutting off

Posted: Wed Jul 10, 2013 8:11 pm
by dr.occa
Oh! I got confused. Doh!

Re: My 3tc keeps shutting off

Posted: Thu Jul 11, 2013 12:25 am
by Cochese35
Lol you guys are havin your own moment. haha yeah I was watchin it like, "I don't remember seeing any wires on my fuel pump..." but thanks. I'll try it out tomorrow.

Re: My 3tc keeps shutting off

Posted: Thu Jul 11, 2013 9:16 pm
by Cochese35
So I disconnected the hose to from the pump to the carb but there was plenty of gas that spilled out so I decided just to reconnect it. When I did though, the reservoir filled up again but I found a vac outlet on the carb leaking gas so I went to autozone, bought some vaccum caps & finally got it running again. Now I have a burst hose but I'll fix that tomorrow. Thanks everyone.

Re: My 3tc keeps shutting off

Posted: Thu Jul 11, 2013 9:31 pm
by dr.occa
That's great to know it was a cheap fix :tu:. Glad nothing caught fire during all of that.

Re: My 3tc keeps shutting off

Posted: Fri Jul 12, 2013 12:27 am
by milchmann
Awesome! Vacuum leaks are always the first thing I look for on carbed cars :P

Easier to pin point if you use a piece of vacuum line like a stethascope ... for future use.

Re: My 3tc keeps shutting off

Posted: Sun Jul 14, 2013 2:47 pm
by Cochese35
milchmann wrote:Awesome! Vacuum leaks are always the first thing I look for on carbed cars :P

Easier to pin point if you use a piece of vacuum line like a stethascope ... for future use.
Yeah I got all different kinds of answers so I tried each one by what seemed easiest. I thought it would be harder b/c the holes were previously plugged with bolts & hosepieces so I just replaced all of them.