I have a problem - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jeremy_5 · 04-12-2004, 06:22 AM

I just finished bending and puting a new fuel line on, the one from the pump to the carb, but now the engine won't start. I can get it to start if I pour fuel down the carb, but then it will stop shortly afterwards. So I am assuming my fuel pump has went out and I am not getting any fuel into the engine. It has a new fuel filter, and none of the lines are kinked or damaged. What do you guys think? Is it the pump? Why would it suddenly go out after I replaced the line? any other thoughts on what it could be

dwaite72lnghrn · 04-12-2004, 06:39 AM

did you use teflon tape on the fittings? you might have taped the hole closed. Did you pull the line off before the filter and do you have fuel in the line. or is there no fuel anywhere in the line at all.

Longhorn Man · 04-12-2004, 07:13 AM

Did you crank it over for a moment, or did you just hit the key and expect it to start?
Since the line is empty, (and any filter in that line) then it may take a moment of cranking the engine over to fill everything back up.

cdowns · 04-12-2004, 10:52 AM

do you have gas in the tank? is the filter in backwards?

Jeremy_5 · 04-12-2004, 06:12 PM

Thanks for the replies,
Yes I did crank it over for some time, about 15-20 mintues I tried to get it to start. There is no teflon tape, but I am not sure about fuel in the line, I didn't have time to pull the line back off. Yes there is gas in the tank, and I didn't check but I am sure the filter is in right. I will check that and if there is fuel in the line and get back to you guys.

Jeremy_5 · 04-12-2004, 08:01 PM

okay, so I took of the line, there was gas present when I unscrewed it from the carb, and there was also gas when I unscrewed it from the pump. The gas at the carb could have gotten there from me putting fuel down the carb, but there is gas in the pump too, so that means the pump is functioning, am I correct?

badass67 · 04-12-2004, 08:16 PM

Connect your fuel line back to the pump and before you connect it to the carb get someone to crank the engine and using a container of some sort, you should see the fuel coming out of the line. If you have fuel being pumped out of the line, you check past that point if not you go backwards.

**71swb4x4** · 04-12-2004, 08:20 PM

Doing what badass67 said doesn't sound like a bad idea but be sure to have a fire extinguisher close by.

Shawn

grayw0lf · 04-12-2004, 11:38 PM

If you have gas all the way to the carburetor, spin it a few times. Then go around to the front of the engine & pull the throttle all the way open a few times by hand. You should see it spraying out. You may need to repair/replace your Roachester.

dwaite72lnghrn · 04-13-2004, 12:14 AM

OK you have fuel to the carb. you could have gotten junk from the line and blocked the jets or messed the float needles. Gas in the carb could not have gotten to the fuel line from dumping it down the barrels. gas in the line and carb normally means the pump is working, It doesn't mean it is totally good (pressure could be low at high speed causing a lean condition) but you should be able to start with it.

dwaite72lnghrn · 04-13-2004, 12:14 AM

OK you have fuel to the carb. you could have gotten junk from the line and blocked the jets or messed the float needles. Gas in the carb could not have gotten to the fuel line from dumping it down the barrels. gas in the line and carb normally means the pump is working, It doesn't mean it is totally good (pressure could be low at high speed causing a lean condition) but you should be able to start with it.

Jeremy_5 · 04-13-2004, 03:04 AM

Thanks guys, well I will try to get it to start again tomorrow, I don't think I need a new carb as it was working just fine before I had to replace the line.

dwaite72lnghrn · 04-13-2004, 06:37 AM

You didn't say what carb was on there? If it is a Qjet check the filter in the front maybe its blocked or crushed. If its an Edelbrock square bore get a gasket and pop the top. Did you change the line for looks or was there a problem with it?"

Jeremy_5 · 04-13-2004, 04:18 PM

It is a quadrajet carb, filter is fine I just replaced it, I replaced the line becuase it was bad.

busterwivell · 04-13-2004, 04:39 PM

I had that problem once and it was an in carb filter that was twisted shut. Got to love those swapmeet bargains!

Jeremy_5 · 04-13-2004, 07:24 PM

Well I got her started!!!! I pulled the fuel filter and after a while got it to start. Then I put the filter back in ( yes the same direction I had it

) And it still started. Not sure what was wrong, but atleast I got it working right. Thanks to everyone who helped me out I appreciate it

04-12-2004, 06:22 AM	#1
Jeremy_5 Truck addict Join Date: Sep 2003 Location: Lincoln, California Posts: 497	I have a problem I just finished bending and puting a new fuel line on, the one from the pump to the carb, but now the engine won't start. I can get it to start if I pour fuel down the carb, but then it will stop shortly afterwards. So I am assuming my fuel pump has went out and I am not getting any fuel into the engine. It has a new fuel filter, and none of the lines are kinked or damaged. What do you guys think? Is it the pump? Why would it suddenly go out after I replaced the line? any other thoughts on what it could be __________________ 1956 Chevy Napco 1972 Cheyenne Super 1970 K20

04-12-2004, 06:39 AM	#2
dwaite72lnghrn Registered User Join Date: Jun 2002 Location: central pa Posts: 1,525	did you use teflon tape on the fittings? you might have taped the hole closed. Did you pull the line off before the filter and do you have fuel in the line. or is there no fuel anywhere in the line at all. __________________ 72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne

04-12-2004, 10:52 AM	#4
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	do you have gas in the tank? is the filter in backwards? __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

04-12-2004, 06:12 PM	#5
Jeremy_5 Truck addict Join Date: Sep 2003 Location: Lincoln, California Posts: 497	Thanks for the replies, Yes I did crank it over for some time, about 15-20 mintues I tried to get it to start. There is no teflon tape, but I am not sure about fuel in the line, I didn't have time to pull the line back off. Yes there is gas in the tank, and I didn't check but I am sure the filter is in right. I will check that and if there is fuel in the line and get back to you guys. __________________ 1956 Chevy Napco 1972 Cheyenne Super 1970 K20

04-12-2004, 08:01 PM	#6
Jeremy_5 Truck addict Join Date: Sep 2003 Location: Lincoln, California Posts: 497	okay, so I took of the line, there was gas present when I unscrewed it from the carb, and there was also gas when I unscrewed it from the pump. The gas at the carb could have gotten there from me putting fuel down the carb, but there is gas in the pump too, so that means the pump is functioning, am I correct? __________________ 1956 Chevy Napco 1972 Cheyenne Super 1970 K20

04-12-2004, 07:13 AM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Did you crank it over for a moment, or did you just hit the key and expect it to start? Since the line is empty, (and any filter in that line) then it may take a moment of cranking the engine over to fill everything back up.

04-12-2004, 08:16 PM	#7
badass67 Registered User Join Date: Nov 2001 Location: oakland,CA, USA Posts: 32	Connect your fuel line back to the pump and before you connect it to the carb get someone to crank the engine and using a container of some sort, you should see the fuel coming out of the line. If you have fuel being pumped out of the line, you check past that point if not you go backwards.

04-12-2004, 08:20 PM	#8
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,499	Doing what badass67 said doesn't sound like a bad idea but be sure to have a fire extinguisher close by. Shawn __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

04-12-2004, 11:38 PM	#9
grayw0lf Registered User Join Date: Apr 2004 Location: Clanton, AL Posts: 1,253	If you have gas all the way to the carburetor, spin it a few times. Then go around to the front of the engine & pull the throttle all the way open a few times by hand. You should see it spraying out. You may need to repair/replace your Roachester. __________________ 85' CUCV M1009!!! The newest addition! 6.2diesel, Th400, NP208, & only 36k miles! 70' C-10 LWB Fleetside - Looking good these days! 05' Dodge Neon 88' Winner Escape Sport 1750 - 4.3v6 94' Seadoo SP 84' Honda TRX200, bare nekkid. Just a frame & tires. Always looking for another project or any good deal!

04-13-2004, 12:14 AM	#10
dwaite72lnghrn Registered User Join Date: Jun 2002 Location: central pa Posts: 1,525	OK you have fuel to the carb. you could have gotten junk from the line and blocked the jets or messed the float needles. Gas in the carb could not have gotten to the fuel line from dumping it down the barrels. gas in the line and carb normally means the pump is working, It doesn't mean it is totally good (pressure could be low at high speed causing a lean condition) but you should be able to start with it. __________________ 72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne

04-13-2004, 03:04 AM	#12
Jeremy_5 Truck addict Join Date: Sep 2003 Location: Lincoln, California Posts: 497	Thanks guys, well I will try to get it to start again tomorrow, I don't think I need a new carb as it was working just fine before I had to replace the line. __________________ 1956 Chevy Napco 1972 Cheyenne Super 1970 K20

04-13-2004, 06:37 AM	#13
dwaite72lnghrn Registered User Join Date: Jun 2002 Location: central pa Posts: 1,525	You didn't say what carb was on there? If it is a Qjet check the filter in the front maybe its blocked or crushed. If its an Edelbrock square bore get a gasket and pop the top. Did you change the line for looks or was there a problem with it?" __________________ 72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne

04-13-2004, 04:18 PM	#14
Jeremy_5 Truck addict Join Date: Sep 2003 Location: Lincoln, California Posts: 497	It is a quadrajet carb, filter is fine I just replaced it, I replaced the line becuase it was bad. __________________ 1956 Chevy Napco 1972 Cheyenne Super 1970 K20

04-13-2004, 04:39 PM	#15
busterwivell Registered User Join Date: Jan 2002 Location: Sahuarita, AZ USA Posts: 2,033	I had that problem once and it was an in carb filter that was twisted shut. Got to love those swapmeet bargains! __________________ Bill - Tucson, AZ 47 Chevrolet 2 dr sedan 56 Chevrolet 210 2 dr sedan 66 Chevrolet Malibu 2 dr 4 speed 71 Chevrolet C30 Longhorn 86 Chevrolet Monte Carlo SS (Sold) 01 Chevrolet Tahoe IM - BUSTERWIVE@aol.com

04-13-2004, 07:24 PM	#16
Jeremy_5 Truck addict Join Date: Sep 2003 Location: Lincoln, California Posts: 497	Well I got her started!!!! I pulled the fuel filter and after a while got it to start. Then I put the filter back in ( yes the same direction I had it ) And it still started. Not sure what was wrong, but atleast I got it working right. Thanks to everyone who helped me out I appreciate it __________________ 1956 Chevy Napco 1972 Cheyenne Super 1970 K20



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