bad fuel pump - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jason952 · 06-01-2004, 01:52 AM

hi guys, I have my new engine in and running, after getting past a no spark issue. now, though, it seems starved of fuel, and it needs gas poured into the card to get it cranked. Also, when I back-prime it, the fuel just seep down the line, past the filter watch glass and pump, back to the tank.

A pal has a truck with a glass filter and it remains pretty full when the motor is off, and it doesn't drain down like mine.

due to this, is my fuel pump bad, or just out of prime??

If I need a new one, do I go stock or upgrade? I have a 350 with mild cam and 1406 carb. thanks!

jason

Russell · 06-01-2004, 02:06 AM

They are fairly cheap to replace -- I just paid 5 bucks for one from a wrecking yard

Make sure that you get yourself a gasket to get between the pump and pump plate before you start, and have fun getting the fuel pump rod up to get the pump in

I find that a set of angled needle nose pliers work very well, just make sure that you don't gouge it...

Jonboy · 06-01-2004, 08:28 AM

A new one shouldn't be more than $20 or so. Like Russell said, be careful when putting it in. A stock replacement should be fine for your application.

blink32 · 06-01-2004, 12:35 PM

Quote:

Originally Posted by Russell

have fun getting the fuel pump rod up to get the pump in

I find that a set of angled needle nose pliers work very well, just make sure that you don't gouge it...

If you coat the rod in grease it will hold its-self up out of the way. Or you can use a feeler gauge to hold it up while you put in the new pump and you won't gouge the rod.

SanitysBane · 06-01-2004, 10:34 PM

on a small there is 2 holes on the front of the block right by the fuel pump, these were used in the 50s for the motor mounts, one of the holes, i forgot which one, is tapped all the way through, take a long bolt and run it in, untill it hit the plunger and just SNUG it down, if u over tighten it u will bend the push rod, also if any of y'all are having oil leaks from the front of the engine check that out, and i think they might have a bolt in there all ready...not shure, good luck,

p.s. this is only for small block chev guys, sorry big blocks, i feel your pain

06-01-2004, 01:52 AM	#1
jason952 Registered User Join Date: Mar 2004 Posts: 65	bad fuel pump hi guys, I have my new engine in and running, after getting past a no spark issue. now, though, it seems starved of fuel, and it needs gas poured into the card to get it cranked. Also, when I back-prime it, the fuel just seep down the line, past the filter watch glass and pump, back to the tank. A pal has a truck with a glass filter and it remains pretty full when the motor is off, and it doesn't drain down like mine. due to this, is my fuel pump bad, or just out of prime?? If I need a new one, do I go stock or upgrade? I have a 350 with mild cam and 1406 carb. thanks! jason Last edited by jason952; 06-01-2004 at 09:12 AM.

06-01-2004, 02:06 AM	#2
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	They are fairly cheap to replace -- I just paid 5 bucks for one from a wrecking yard Make sure that you get yourself a gasket to get between the pump and pump plate before you start, and have fun getting the fuel pump rod up to get the pump in I find that a set of angled needle nose pliers work very well, just make sure that you don't gouge it... __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

06-01-2004, 10:34 PM	#5
SanitysBane Registered User Join Date: May 2004 Location: Lubbock, Texas Posts: 2,121	on a small there is 2 holes on the front of the block right by the fuel pump, these were used in the 50s for the motor mounts, one of the holes, i forgot which one, is tapped all the way through, take a long bolt and run it in, untill it hit the plunger and just SNUG it down, if u over tighten it u will bend the push rod, also if any of y'all are having oil leaks from the front of the engine check that out, and i think they might have a bolt in there all ready...not shure, good luck, p.s. this is only for small block chev guys, sorry big blocks, i feel your pain __________________ '96 Nissan Pathfinder '02 Firebird Trans Am. '88 K5 Blazer

06-01-2004, 08:28 AM	#3
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	A new one shouldn't be more than $20 or so. Like Russell said, be careful when putting it in. A stock replacement should be fine for your application.



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