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Unread 03-07-2014, 05:57 PM   #1
Titanthomas
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350 engine trouble

Hello, i have a 1984 chevy 350 with a edelbrock 1406 carb. Mechanical fuel pump. Excell distributor. When it hits 210-220 degrees, it shuts off and starves for gas. Tried new pump. Cleaned carb pins on the float. If i keep it reved it works fine. Please help!! Hah


A few things to note: electric choke is not hooked up. Linkage missing from carb. Worked fine before i rebuilt the rear end. Changed fuel filter as well (the filter on the chasis). Has a valve cove leak. Forgive the info. Im naming random stuff in hopes it makes it easier to diagnose.


Last edited by Titanthomas; 03-07-2014 at 06:18 PM..
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Unread 03-07-2014, 06:02 PM   #2
Xzero117
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first of all you shouldn't be getting that hot in the first place, check your cooling system

and second try a wooden spacer, edelbrock sells them and they're great

the edelbrock carbs are susceptible to fuel boiling off in the bowl the wooden spacer does a hell of a job insulating
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Unread 03-07-2014, 06:07 PM   #3
YJ4LIFE
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get a 160* thermostat. I had one in my firebird. milodon makes brass ones.
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Unread 03-09-2014, 04:50 PM   #4
Titanthomas
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Quote:
Originally Posted by Xzero117
first of all you shouldn't be getting that hot in the first place, check your cooling system

and second try a wooden spacer, edelbrock sells them and they're great

the edelbrock carbs are susceptible to fuel boiling off in the bowl the wooden spacer does a hell of a job insulating
Thanks Zero, I will try that. It has a spacer, I'll replace it with a wooden one. Like I said it was my fathers. I will also try the thermo.

Quick update. I removed the pins from the carb via, inspection plate on the top. The right pin was semi welded to the carb, I finally wiggled it out. Sanded, polished, and preserved the metal. Apon replacing it it ran like a champ. Thanks you again.
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Unread 03-09-2014, 04:51 PM   #5
Titanthomas
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Quote:
Originally Posted by YJ4LIFE
get a 160* thermostat. I had one in my firebird. milodon makes brass ones.
Thank you YJ
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Unread 03-16-2014, 09:25 AM   #6
Titanthomas
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Quote:
Originally Posted by Titanthomas

Thank you YJ
Hey YJ, I discovered it has a 180 in it now. What I was unaware of is the stock 4cylinder radiator. I ordered a 3 core allum. corvette racing radiator from eBay. $188. Very cheap imo. I'm hoping that was the problem. I'm 90% sure that is it lmao. But anyway just updating you. Thanks again for the help.
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Unread 03-16-2014, 04:34 PM   #7
YJ4LIFE
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Originally Posted by Titanthomas View Post
Hey YJ, I discovered it has a 180 in it now. What I was unaware of is the stock 4cylinder radiator. I ordered a 3 core allum. corvette racing radiator from eBay. $188. Very cheap imo. I'm hoping that was the problem. I'm 90% sure that is it lmao. But anyway just updating you. Thanks again for the help.
Awesome
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Unread 04-13-2014, 09:29 AM   #8
Titanthomas
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Ok, hah well time to try again, I'm nearly over it tho. New: 3 Core aluminum radiator, new thermo, new water pump, new spacer, new 1750 cfm 14" fan. $350.. Ish and its still running hot. I took the thermo out of it and it runs 190-200 on highway. 210+ in traffic. Engine shuts off and my clear fuel filter nearly empties when it gets that hot, ( previously posted I had jug drain so I put filter on to diagnose. Will replace it when I'm done). I can't for the life of me figure out what's wrong. Today the drain on my heater core was dripping, that's a first. My wedding is soon and I can't take it to the beach acting up. Any further help and I would be forever grateful!
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Unread 04-13-2014, 10:04 AM   #9
AmmitOsiris
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Quote:
Originally Posted by Titanthomas
Ok, hah well time to try again, I'm nearly over it tho. New: 3 Core aluminum radiator, new thermo, new water pump, new spacer, new 1750 cfm 14" fan. $350.. Ish and its still running hot. I took the thermo out of it and it runs 190-200 on highway. 210+ in traffic. Engine shuts off and my clear fuel filter nearly empties when it gets that hot, ( previously posted I had jug drain so I put filter on to diagnose. Will replace it when I'm done). I can't for the life of me figure out what's wrong. Today the drain on my heater core was dripping, that's a first. My wedding is soon and I can't take it to the beach acting up. Any further help and I would be forever grateful!
Did you burp the full system? Do you have anything blocking the fan? What thermostat is it set at? Does fan work properly?

YES.
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Unread 04-13-2014, 10:04 AM   #10
napaguy
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Do you have a shroud in place? How about a fuel return line?
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Unread 04-13-2014, 02:27 PM   #11
Titanthomas
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I no longer have a thermo in my system. It stays cooler without. Its a daily driver so i had to. Till i figure it out. The jeep was at an incline when i burped the rad. I do not have a return line for the fuel. My 1406 edelbrock likes to drain gas when it sits.
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Unread 04-13-2014, 02:28 PM   #12
Titanthomas
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I do not have room for a shroud. The fan motor is approximately 3/4 of an inch from the waterpump tri belt pully
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Unread 04-13-2014, 06:39 PM   #13
Titanthomas
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I'm making my own wooden spacer for my carb, it acts up when temp reaches 190 I just bought another 160 degree thermo.
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Unread 04-13-2014, 06:58 PM   #14
SeanB95YJ
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Quote:
Originally Posted by Titanthomas View Post
Ok, hah well time to try again, I'm nearly over it tho. New: 3 Core aluminum radiator, new thermo, new water pump, new spacer, new 1750 cfm 14" fan. $350.. Ish and its still running hot. I took the thermo out of it and it runs 190-200 on highway. 210+ in traffic. Engine shuts off and my clear fuel filter nearly empties when it gets that hot, ( previously posted I had jug drain so I put filter on to diagnose. Will replace it when I'm done). I can't for the life of me figure out what's wrong. Today the drain on my heater core was dripping, that's a first. My wedding is soon and I can't take it to the beach acting up. Any further help and I would be forever grateful!
that sounds a bit low for fan output.... and just a touch on the small side. get to a junk yard and get yourself a Taurus or Mark VIII fan (the Mark is a closer fit) and they push through a TON of air, built-in shroud, 2 speed motors

not saying your fan is the cause of your problem, but it's not really helping much
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swap/build thread: http://www.jeepforum.com/forum/f22/a...hread-1542284/
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Unread 04-13-2014, 07:59 PM   #15
racenmotorsport
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It sounds like vapor lock, make sure the fuel line isn't near anything hot that will boil the fuel off. Had a similar problem years ago with a ford pinto my dad and I rebuilt and the fuel line would suck down when it got hot. Weirdest problem I've ever seen. Anyway, sounds like the same thing, check the fuel lines...Good luck.
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