Truck wont start without starting fluid, but after i spray it itll run all day long. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Swatson · 03-18-2018, 11:40 AM

I have a 66 chevy c10, with an inline 250 motor from a 70's c10. When i try to start it cold itll just turn over and over again but won't start. I can spray starting fluid into the carb and it'll crank fine and after it warms up, it'll idle fine and I can drive it all day.
And after the engine is warm, I can turn it off and crank it again and it'll fire right up.
I've put new plugs and wires, new fuel pump(mechanical), new fuel lines from pump to carb, new fuel filter, I've rebuilt the carb which is a Rochester monojet and put a new fuel filter in the carb. Any help would be greatly appreciated. Thank you.

BLT gmc · 03-18-2018, 01:02 PM

Weak or weaker spark and /or low on compression? Those are the two places I would start with.

shp4man · 03-18-2018, 01:35 PM

Choke working OK?

**Captainfab** · 03-18-2018, 11:24 PM

Does the carb have fuel in it when it won't start?

rvrfoot · 03-18-2018, 11:45 PM

Put a fuel filter on it so you can see if there is any fuel at the carb.

**PGSigns** · 03-19-2018, 06:50 AM

Have you verified the accelerator pump is working? Pull the air cleaner and pump the throttle a couple of time and look to see if you have fuel coming out. You should be able to pump it once and pull the choke and it fire right up.
Jimmy

CANUCIT · 03-19-2018, 09:57 AM

Filter in tank collapsed, another inline filter clogged

Swatson · 03-19-2018, 12:52 PM

Thanks for all the advice. I found the Ignition coil had somehow overheated and melted the wire, so it wasn't getting a spark. Changed the coil, and put new wires through it, the previous wires weren't the right gauge, I'm thinking maybe it just overloaded it. Starting great now, I never thought about spark because it was working fine before i done a rebuild on the carb. Thanks again, and I'm sure I'll have more questions later on.

63burban · 03-19-2018, 04:35 PM

Use the choke

andyh1956 · 03-20-2018, 11:13 PM

Quote:

Originally Posted by Swatson

Thanks for all the advice. I found the Ignition coil had somehow overheated and melted the wire, so it wasn't getting a spark. Changed the coil, and put new wires through it, the previous wires weren't the right gauge, I'm thinking maybe it just overloaded it. Starting great now, I never thought about spark because it was working fine before i done a rebuild on the carb. Thanks again, and I'm sure I'll have more questions later on.

There should be two wires to the Positive side of the coil, the 6 volt resisted wire from the switch & the 12 volt wire from the starter.

03-18-2018, 11:40 AM	#1
Swatson Registered User Join Date: Mar 2018 Location: Calhoun Posts: 9	Truck wont start without starting fluid, but after i spray it itll run all day long. I have a 66 chevy c10, with an inline 250 motor from a 70's c10. When i try to start it cold itll just turn over and over again but won't start. I can spray starting fluid into the carb and it'll crank fine and after it warms up, it'll idle fine and I can drive it all day. And after the engine is warm, I can turn it off and crank it again and it'll fire right up. I've put new plugs and wires, new fuel pump(mechanical), new fuel lines from pump to carb, new fuel filter, I've rebuilt the carb which is a Rochester monojet and put a new fuel filter in the carb. Any help would be greatly appreciated. Thank you.

03-18-2018, 01:02 PM	#2
BLT gmc Registered User Join Date: Feb 2014 Location: West Iowa Posts: 1,106	Re: Truck wont start without starting fluid, but after i spray it itll run all day lo Weak or weaker spark and /or low on compression? Those are the two places I would start with.

03-18-2018, 01:35 PM	#3
shp4man Registered User Join Date: Oct 2016 Location: San Diego, CA Posts: 556	Re: Truck wont start without starting fluid, but after i spray it itll run all day lo Choke working OK? __________________ Everybody has to believe in something. I believe I'll have another beer.

03-18-2018, 11:24 PM	#4
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,251	Re: Truck wont start without starting fluid, but after i spray it itll run all day lo Does the carb have fuel in it when it won't start? __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

03-18-2018, 11:45 PM	#5
rvrfoot Registered User Join Date: Oct 2016 Location: san bernardino ca Posts: 1,611	Re: Truck wont start without starting fluid, but after i spray it itll run all day lo Put a fuel filter on it so you can see if there is any fuel at the carb.

03-19-2018, 06:50 AM	#6
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: Truck wont start without starting fluid, but after i spray it itll run all day lo Have you verified the accelerator pump is working? Pull the air cleaner and pump the throttle a couple of time and look to see if you have fuel coming out. You should be able to pump it once and pull the choke and it fire right up. Jimmy __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic

03-19-2018, 09:57 AM	#7
CANUCIT Registered User Join Date: Nov 2017 Location: JOPLIN MO Posts: 59	Re: Truck wont start without starting fluid, but after i spray it itll run all day lo Filter in tank collapsed, another inline filter clogged __________________ 1962 chevy short and wide 2015 z71 1967 SS Chevelle

03-19-2018, 12:52 PM	#8
Swatson Registered User Join Date: Mar 2018 Location: Calhoun Posts: 9	Re: Truck wont start without starting fluid, but after i spray it itll run all day lo Thanks for all the advice. I found the Ignition coil had somehow overheated and melted the wire, so it wasn't getting a spark. Changed the coil, and put new wires through it, the previous wires weren't the right gauge, I'm thinking maybe it just overloaded it. Starting great now, I never thought about spark because it was working fine before i done a rebuild on the carb. Thanks again, and I'm sure I'll have more questions later on.

03-19-2018, 04:35 PM	#9
63burban Chevy addict Join Date: May 2012 Location: Iron Ridge, WI Posts: 1,085	Re: Truck wont start without starting fluid, but after i spray it itll run all day lo Use the choke



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