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Tool Talk Discussion Forum

1964 Chevy truck help!

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Nebraska Kirk

03-04-2008 16:14:02




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I have a 1964 Chevy pickup with a 230 inline 6-cylinder engine. I drove it about 70 miles on friday without any trouble. Sat. morning I went to start it up and it would not start. The problem is that it floods itself. Now, if I only knew why. I tried it this morning, I took the air cleaner off the carb so that I could see, it started and ran a little rough for a few seconds until the carb flooded and then it died.

Only carbs I have ever messed with are on Farmall Hs and Ms :-) Never messed with this Chevy carb. If anyone has any insight on this, I would appreciate it! I kinda need this truck, this is my backup while my other one is in the shop!

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nebraska kirk

03-06-2008 15:36:51




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 Re: 1964 Chevy truck help! in reply to Nebraska Kirk, 03-04-2008 16:14:02  
I found the problem. The float does indeed have a microscopic hole in it. NAPA has ordered me a new float and kit.



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Brother Dave

03-05-2008 05:42:32




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 Re: 1964 Chevy truck help! in reply to Nebraska Kirk, 03-04-2008 16:14:02  
I agree with T_Bone, those fiber floats can saturate with gas and hold the needle valve open and flood the carb. Had one to do the same thing for me. Gave me fits until I replaced the float with a new one.



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RustyFarmall

03-05-2008 05:28:26




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 Re: 1964 Chevy truck help! in reply to Nebraska Kirk, 03-04-2008 16:14:02  
First off, I"m thinking that the 230 C.I. engine would not be original to the truck. It should have either the 235 or the later 250. Not sure just when the change was made. It really doesn"t make any difference though. My thoughts on the problem are that if it has an automatic choke, that is most likely the culprit. The easiest way to cure the mal-functioning automatic choke is with a manual conversion kit.

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Joe(TX)

03-05-2008 09:19:49




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 Re: 1964 Chevy truck help! in reply to RustyFarmall, 03-05-2008 05:28:26  
RustyFarmall is correct in that the 230 was not available until 1965. The 250 was not available either. It would be a 292.



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Nebraska Kirk

03-05-2008 14:57:04




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 Re: 1964 Chevy truck help! in reply to Joe(TX), 03-05-2008 09:19:49  
The carb float is brass. Truck has manual choke. Joe, I rebuilt the engine a few years ago and I know for a fact that this is a 230. It would actually be a little more because it was bored .40 over :-)



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Jon Hagen

03-05-2008 16:13:03




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 Re: 1964 Chevy truck help! in reply to Nebraska Kirk, 03-05-2008 14:57:04  
A 230 most certainly was the original standard engine in a 64, the 235 and 261 stopped production with the 62 model year. In 63 the 230 was the standard 6, with the 292 as an option. The 250 was not used until 65 or 66.



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Bob Huntress

03-04-2008 20:56:10




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 Re: 1964 Chevy truck help! in reply to Nebraska Kirk, 03-04-2008 16:14:02  
I usually start my troubleshooting of those old carb. fuel systems by removing the air filter and looking into the top of the carb, while either a second person turns the key, or while I depress the remote start button. If you see fuel flowing, I look at things like a stuck float(Flooding) etc. If no fuel is visiable, my next check is the fuel pump. The fuel pump can be checked by disconnecting the fuel inlet line to the carb, holding a coffee can under the end, and cranking the engine. You should see a solid flow of fuel going into the can. If you suspect that you are flooding you can remove a spark plug and it will be wet with gas. If you do have a bad float, you can expect to replace it with a rubber one, as opposed to the original brass. When this is needed, I usually just get the carb kit and rebuild it. The carb kit will come with the gaskets, valve needles etc, as well.

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2x4

03-04-2008 20:06:00




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 Re: 1964 Chevy truck help! in reply to Nebraska Kirk, 03-04-2008 16:14:02  
does that have the screen or filter in the carb right where the fuel line screws in? rust may be getting in thru there. Or maybe an in-line filter?



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Dave C 58

03-04-2008 18:03:56




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 Re: 1964 Chevy truck help! in reply to Nebraska Kirk, 03-04-2008 16:14:02  
sounds like one of 3 things, either there is dirt in the needle and seat not letting it close,there is a hole in the float, or the choke is stuck shut.



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nebraska kirk

03-04-2008 18:12:25




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 Re: 1964 Chevy truck help! in reply to Dave C 58, 03-04-2008 18:03:56  
Thanks for the tips. I will check it out. It had me puzzled how it could work fine one day, and not work the very next day!



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Reply

03-04-2008 17:09:32




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 Re: 1964 Chevy truck help! in reply to Nebraska Kirk, 03-04-2008 16:14:02  
It didn't freeze , did it?



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Nebraska Kirk

03-04-2008 17:24:13




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 Re: 1964 Chevy truck help! in reply to Reply, 03-04-2008 17:09:32  
I think it did get below freezing friday night.



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El Toro

03-04-2008 16:29:38




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 Re: 1964 Chevy truck help! in reply to Nebraska Kirk, 03-04-2008 16:14:02  
You may have some dirt under the float needle valve or your float may have a pin hole causing the float to sink. You probably need to remove and clean it. Hal



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Nebraska Kirk

03-04-2008 16:36:57




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 Re: 1964 Chevy truck help! in reply to El Toro, 03-04-2008 16:29:38  
That was my first thought too. So I took the top off the carb on Sat. and examined the float, I shook it and there was no indication that there was any gas in it. I also removed the needle, the rubber point is good yet. I did not remove the seat, maybe I should.



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El Toro

03-04-2008 20:45:16




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 Re: 1964 Chevy truck help! in reply to Nebraska Kirk, 03-04-2008 16:36:57  
You may need to install a pressure regulator at the carburetor if the problem doesn't go away. I would replace that needle & seat. Hal



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Jon Hagen

03-04-2008 16:48:48




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 Re: 1964 Chevy truck help! in reply to Nebraska Kirk, 03-04-2008 16:36:57  
Make sure that seat is tight, the gasket will relax and let them work loose.
Also, rub that rubber needle tip hard over your coveral/jeans leg in all directions. I have had several mistery flooding carbs that had an almost invisible bit of rust or steel embeded in that rubber tip. this gunk will hold the tip off the seat enough to cause a flood over. Rubbing that rubber tip over rough cloth removes the enbeded junk.

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T_Bone

03-04-2008 23:46:48




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 Re: 1964 Chevy truck help! in reply to Jon Hagen, 03-04-2008 16:48:48  
Hi Kirk,

If it has a float made from fiber then replace it. NAPA carrys brass floats as a seperate item if you ask.

I had a Chevy Van that did the same with a fiber float. The float said empty upon inspection but flooded in use. Let the float sit in some gas for a few minutes to confirm.

My Dodge would also flood with alcohol/gas and not with regular gas. I changed the needle about every two years to stop that problem. It sat for long periods without being ran so probably ruined the needle tip while sitting. I ran dual filters on that engine where my other engines only required a single filter.

T_Bone

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