72 c20 project - The 1947 - Present Chevrolet & GMC Truck Message Board Network

swascott1981 · 05-09-2013, 11:48 PM

Well let me start by saying this truck was an old friend when I was a teenager now 15 years later I'm trying to bring it back to life.
My problem at the moment is the gas tank was corroded with rust so I changed the tank, fuel sender, fuel pump, and fuel filters but now it doesn't want to get gas to the carb.
There's nothing wrong with the motor its a SB 350 4 bolt main with only 30000 miles.
At the moment this is my only problem , if I pour gas in the carb it'll crank for a split second but that's it any ideas would be great
Posted via Mobile Device

**leddzepp** · 05-09-2013, 11:54 PM

Check your fuel line.

swascott1981 · 05-10-2013, 12:06 AM

Well I blew out the fuel line today from the tank to the pump before I installed the line on the fuel pump plus I blew out the line from the pump to the carb.
I have an inline filter at the tank im gonna check tomorrow, the biggest thing is everything's new so I'm not sure y it wants to clogg up now.
For many years it ran great on rusty gas
Posted via Mobile Device

ItsRandy · 05-10-2013, 12:20 AM

What kind of carb? Some have fuel filters in the inlet. Are you sure you have the fuel pump push rod engaged with the fuel pump lever? It can be difficult to hold the push rod up and get the pump jammed into position before the push rod falls down.

swascott1981 · 05-10-2013, 12:37 AM

I have the Rochester quadrajet and yes it took a minute but yea the pushrod is in the right place
Posted via Mobile Device

**leddzepp** · 05-10-2013, 12:40 AM

Your Q-Jet will have a filter at the inlet. I would check that, as well as the pump rod as Randy suggested.

Just saw you checked the rod. I am guessing there is a lot of junk built up at the inlet.

swascott1981 · 05-10-2013, 12:50 AM

Yea the 1" filter in the carb is completely cleaned but I'll check the pushrod as well
Posted via Mobile Device

swascott1981 · 05-11-2013, 07:54 PM

Well fellas I found out when I put the pump in it was in wrong so it bent my pushrod so now I gotta get a new one then hopefully I'll have some gas flowing
Posted via Mobile Device

airdale94 · 05-12-2013, 11:16 AM

There's a little bolt on the front of the block. You take that out and screw a longer bolt in to hold your pushrod in place while you change your fuel pump. Then when you're done you put the short bolt back in.

swascott1981 · 05-12-2013, 01:06 PM

Really I didn't know that
Posted via Mobile Device

swascott1981 · 05-12-2013, 01:13 PM

Thanks for the heads up dale I see the bolt I'll try that when I get the new pushrod
Posted via Mobile Device

airdale94 · 05-13-2013, 04:03 PM

No problem! Hope you get it sorted out.

swascott1981 · 05-13-2013, 09:34 PM

Thanks dale I'll update you once I get another pushrod
Posted via Mobile Device

swascott1981 · 05-18-2013, 11:38 AM

Thanks everybody for the help my c20 fired like a dream after I put in the new pushrod
Posted via Mobile Device

05-09-2013, 11:48 PM	#1
swascott1981 Registered User Join Date: May 2013 Location: macon,ga Posts: 9	72 c20 project Well let me start by saying this truck was an old friend when I was a teenager now 15 years later I'm trying to bring it back to life. My problem at the moment is the gas tank was corroded with rust so I changed the tank, fuel sender, fuel pump, and fuel filters but now it doesn't want to get gas to the carb. There's nothing wrong with the motor its a SB 350 4 bolt main with only 30000 miles. At the moment this is my only problem , if I pour gas in the carb it'll crank for a split second but that's it any ideas would be great Posted via Mobile Device

05-09-2013, 11:54 PM	#2
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,031	Re: 72 c20 project Check your fuel line. __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul

05-10-2013, 12:06 AM	#3
swascott1981 Registered User Join Date: May 2013 Location: macon,ga Posts: 9	Re: 72 c20 project Well I blew out the fuel line today from the tank to the pump before I installed the line on the fuel pump plus I blew out the line from the pump to the carb. I have an inline filter at the tank im gonna check tomorrow, the biggest thing is everything's new so I'm not sure y it wants to clogg up now. For many years it ran great on rusty gas Posted via Mobile Device

05-10-2013, 12:20 AM	#4
ItsRandy Registered User Join Date: Nov 2010 Location: Grand Terrace, Ca. Posts: 1,607	Re: 72 c20 project What kind of carb? Some have fuel filters in the inlet. Are you sure you have the fuel pump push rod engaged with the fuel pump lever? It can be difficult to hold the push rod up and get the pump jammed into position before the push rod falls down.

05-10-2013, 12:37 AM	#5
swascott1981 Registered User Join Date: May 2013 Location: macon,ga Posts: 9	Re: 72 c20 project I have the Rochester quadrajet and yes it took a minute but yea the pushrod is in the right place Posted via Mobile Device

05-10-2013, 12:40 AM	#6
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,031	Re: 72 c20 project Your Q-Jet will have a filter at the inlet. I would check that, as well as the pump rod as Randy suggested. Just saw you checked the rod. I am guessing there is a lot of junk built up at the inlet. __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul

05-10-2013, 12:50 AM	#7
swascott1981 Registered User Join Date: May 2013 Location: macon,ga Posts: 9	Re: 72 c20 project Yea the 1" filter in the carb is completely cleaned but I'll check the pushrod as well Posted via Mobile Device

05-11-2013, 07:54 PM	#8
swascott1981 Registered User Join Date: May 2013 Location: macon,ga Posts: 9	Re: 72 c20 project Well fellas I found out when I put the pump in it was in wrong so it bent my pushrod so now I gotta get a new one then hopefully I'll have some gas flowing Posted via Mobile Device

05-12-2013, 11:16 AM	#9
airdale94 Registered User Join Date: Jan 2007 Location: Topeka,KS Posts: 778	Re: 72 c20 project There's a little bolt on the front of the block. You take that out and screw a longer bolt in to hold your pushrod in place while you change your fuel pump. Then when you're done you put the short bolt back in. __________________ 68' C20. 283CI w/55CC 305HO heads, NP435 Close Ratio, Corp. 14 bolt FF 3.21, 75' front end swap (everything but the X-member).

05-12-2013, 01:06 PM	#10
swascott1981 Registered User Join Date: May 2013 Location: macon,ga Posts: 9	Re: 72 c20 project Really I didn't know that Posted via Mobile Device

05-12-2013, 01:13 PM	#11
swascott1981 Registered User Join Date: May 2013 Location: macon,ga Posts: 9	Re: 72 c20 project Thanks for the heads up dale I see the bolt I'll try that when I get the new pushrod Posted via Mobile Device

05-13-2013, 04:03 PM	#12
airdale94 Registered User Join Date: Jan 2007 Location: Topeka,KS Posts: 778	Re: 72 c20 project No problem! Hope you get it sorted out. __________________ 68' C20. 283CI w/55CC 305HO heads, NP435 Close Ratio, Corp. 14 bolt FF 3.21, 75' front end swap (everything but the X-member).

05-13-2013, 09:34 PM	#13
swascott1981 Registered User Join Date: May 2013 Location: macon,ga Posts: 9	Re: 72 c20 project Thanks dale I'll update you once I get another pushrod Posted via Mobile Device

05-18-2013, 11:38 AM	#14
swascott1981 Registered User Join Date: May 2013 Location: macon,ga Posts: 9	Re: 72 c20 project Thanks everybody for the help my c20 fired like a dream after I put in the new pushrod Posted via Mobile Device



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.