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

pokethesmot · 07-18-2009, 01:39 PM

i just replaced mine like 6 months ago and not its gone bad again....what would cause this i have a sbc 400

Prong · 07-18-2009, 11:38 PM

It's extremely rare for a mechanical pump to die that fast. If you've got a high mileage motor, the eccentric on the cam may have worn flat. If that's the case, you'll need a new cam or run an electric fuel pump.

pokethesmot · 07-19-2009, 09:31 AM

would it be the cam if it happened before like this?

Albatrossian · 07-19-2009, 09:47 AM

There's no telling unless you take it apart, poke. You can check the pump rod for wear, there may be a lot of trash in the tank and clogged up the pump.

**old Rusty C10** · 07-19-2009, 09:49 AM

not to turn this thread political but if this is bought at a chain autoparts store that imports alot of junk from china, it could fail easily . I have bought these discount parts before and had three parts bad out of the box.
fuel pumps do not require a core as far as i know. take a dremel and cut the top off once you have it out of the truck and see whats going on perhaps there was a problem with the internals?
Id buy one with a lifetime warranty for $40 as opposed to the $20 one that has the one year replacement on it..

pokethesmot · 07-19-2009, 08:15 PM

i guess ile buy another one and then if that one dont work im going electric

dan76 · 07-19-2009, 08:22 PM

I'd advise checking the faulty pump for the failure cause. If by chance the cam eccentric is gone, then other lobes are soon to follow.

dammitmitchell · 07-19-2009, 08:52 PM

going electric os not cheap and easy dude..
you need a pump designed for pick up..
or a prepump / main pump set up..
unless you go with an intank pump itself..

fuel pumps are nto designed to "pull" (well most arent)
they are designed to push.. while submerged..

dont go cheap on yer parts dude.. even if yer bored...and broke..

pokethesmot · 07-19-2009, 09:37 PM

how do i check to see if the cam is gone cuz i just highly doubt it is the fuel pump and i know nuthens clogged cuz i can blow air through the fuel pump

dammitmitchell · 07-19-2009, 10:15 PM

pokes..

you need to go with THE SIMPLEST SOLUTION first... ALWAYS..
cheap pump.. possibly out.. could be the solution...
seeing how there is a ton of ghetto ass PO "solutions" instead of real repirs.. i would start checking everythign before you touch.. even think about..touching or blaming the motor..

the VERY first thing i would do is test the fuel pump at the lines closest to it to see if it's even pumping fuel.. at all..
check your fuel filter for garbage...
pull and check the pump see if it is still intact and functiong.. period..
when check the lines between your tank and the pump.. they can be ****ty.. and case the fuel pump to "work hard" leading to failure.
Especially if you are cheap and putting crap onto your truck...

my truck is ugly.. loud and well dosent always run right.. but it ALWAYS gets quality parts...
and as i put quality parts/ troubleshooting and repairs into it..
all the ****ty chinese crap breaks and falls off/ fails etc..
so it all gets replaced with quality stuff..
period.....

love u man.. but ya gotta start checking all options here... on everything you do... freaking out and fancy parts dont fix your problem..

3r!c84 · 07-20-2009, 01:15 AM

poke
i didnt know u had a 400sb

pokethesmot · 07-20-2009, 10:57 AM

Quote:

Originally Posted by dammitmitchell

pokes..

you need to go with THE SIMPLEST SOLUTION first... ALWAYS..
cheap pump.. possibly out.. could be the solution...
seeing how there is a ton of ghetto ass PO "solutions" instead of real repirs.. i would start checking everythign before you touch.. even think about..touching or blaming the motor..

the VERY first thing i would do is test the fuel pump at the lines closest to it to see if it's even pumping fuel.. at all..
check your fuel filter for garbage...
pull and check the pump see if it is still intact and functiong.. period..
when check the lines between your tank and the pump.. they can be ****ty.. and case the fuel pump to "work hard" leading to failure.
Especially if you are cheap and putting crap onto your truck...

my truck is ugly.. loud and well dosent always run right.. but it ALWAYS gets quality parts...
and as i put quality parts/ troubleshooting and repairs into it..
all the ****ty chinese crap breaks and falls off/ fails etc..
so it all gets replaced with quality stuff..
period.....

love u man.. but ya gotta start checking all options here... on everything you do... freaking out and fancy parts dont fix your problem..

well i did pull the line to the tank closest to the pump and tried to suck up gas and nuthen...do i need to pull the line too the carb also?

pokethesmot · 07-20-2009, 10:59 AM

Quote:

Originally Posted by 3r!c84

poke
i didnt know u had a 400sb

yeah man i love my 400 sb

dammitmitchell · 07-20-2009, 11:34 AM

pull and chec all the lines..
you are allready doing it.. so might as well..
remember the most simple solution is almost always the right answer..
do allthe lines and check them out..
might just have a clog on the pickup side dude..

pokethesmot · 07-20-2009, 12:55 PM

i pulled and checked all the lines i can blow air into the tank and hear it bubble

dammitmitchell · 07-20-2009, 01:25 PM

what about pulling? that's the important part..
have you checkek your float ever?
ever seen teh strainer or anything that is in your tank?..
just my opinion..

pokethesmot · 07-20-2009, 01:44 PM

well i pulled the line right next to the pump put it into a container of gas and it wouldnt even suck that up

dammitmitchell · 07-20-2009, 02:25 PM

well then remove the pump
and rotate the motor over a few times to see if the rod is actuating the pump itself..
if the rod is moving th epump is ****..

then you have to find out why the pump is ****ting on you
(cheap parts>?)

pokethesmot · 07-20-2009, 02:40 PM

Quote:

Originally Posted by dammitmitchell

well then remove the pump
and rotate the motor over a few times to see if the rod is actuating the pump itself..
if the rod is moving th epump is ****..

then you have to find out why the pump is ****ting on you
(cheap parts>?)

alright man this looks like the plan lol and i guess we will find out if its parts soon enough it may take me a little while cuz taking cair of a 1 year old and working on a truck at the same time is very difficult lol

dammitmitchell · 07-20-2009, 03:31 PM

wow way to whine.. ive got three.. hahaaahahahahhahah
whiner
hahahhaha
j/k

pokethesmot · 07-20-2009, 06:02 PM

well dang shure enough its a faulty fuel pump the lever had no tension to it it was just floppin around

pokethesmot · 07-20-2009, 08:58 PM

i HATE installing fuel pumps so so bad..its a pain in the ass...i tried installing a old one i had sitting around but it didnt work eather so i gotta go to the store tomorrow and get another one

mongoose · 07-20-2009, 09:15 PM

??rotate the motor untill the rod goes all the way up and shove the pump in and bolt it on

one of the easiest things to change out.

pokethesmot · 07-20-2009, 09:35 PM

even if the motor is roted the rod always slides back down i gotta hold it up with a screw driver and then try to position the pump in

*78 Chevyrado* · 07-20-2009, 09:47 PM

Put a big blob of grease on the rod in the hole and that will hold it in the hole long enough to get the pump bolted on.

07-18-2009, 01:39 PM	#1
pokethesmot profeshinaly unimployed Join Date: Dec 2008 Location: hazlehurst, GA Posts: 1,232	fuel pump i just replaced mine like 6 months ago and not its gone bad again....what would cause this i have a sbc 400 __________________ my ride click here my myspace "having mud flaps is like asking for a smaller trophy"

07-18-2009, 11:38 PM	#2
Prong Registered User Join Date: May 2007 Location: CO Posts: 474	Re: fuel pump It's extremely rare for a mechanical pump to die that fast. If you've got a high mileage motor, the eccentric on the cam may have worn flat. If that's the case, you'll need a new cam or run an electric fuel pump.

07-19-2009, 09:31 AM	#3
pokethesmot profeshinaly unimployed Join Date: Dec 2008 Location: hazlehurst, GA Posts: 1,232	Re: fuel pump would it be the cam if it happened before like this? __________________ my ride click here my myspace "having mud flaps is like asking for a smaller trophy"

07-19-2009, 09:47 AM	#4
Albatrossian Georgia Boy Join Date: Jun 2008 Location: Douglas, Georgia Posts: 370	Re: fuel pump There's no telling unless you take it apart, poke. You can check the pump rod for wear, there may be a lot of trash in the tank and clogged up the pump. __________________ 81 GMC High Sierra, 2WD, 357ci/700R4, 3.73s, posi.

07-19-2009, 09:49 AM	#5
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,287	Re: fuel pump not to turn this thread political but if this is bought at a chain autoparts store that imports alot of junk from china, it could fail easily . I have bought these discount parts before and had three parts bad out of the box. fuel pumps do not require a core as far as i know. take a dremel and cut the top off once you have it out of the truck and see whats going on perhaps there was a problem with the internals? Id buy one with a lifetime warranty for $40 as opposed to the $20 one that has the one year replacement on it.. __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

07-19-2009, 08:15 PM	#6
pokethesmot profeshinaly unimployed Join Date: Dec 2008 Location: hazlehurst, GA Posts: 1,232	Re: fuel pump i guess ile buy another one and then if that one dont work im going electric __________________ my ride click here my myspace "having mud flaps is like asking for a smaller trophy"

07-19-2009, 08:22 PM	#7
dan76 Registered User Join Date: Mar 2008 Location: Salt Lake City UT Posts: 441	Re: fuel pump I'd advise checking the faulty pump for the failure cause. If by chance the cam eccentric is gone, then other lobes are soon to follow. Last edited by dan76; 07-19-2009 at 08:22 PM.

07-19-2009, 08:52 PM	#8
dammitmitchell the pollock Join Date: May 2008 Location: abilene, texas Posts: 4,423	Re: fuel pump going electric os not cheap and easy dude.. you need a pump designed for pick up.. or a prepump / main pump set up.. unless you go with an intank pump itself.. fuel pumps are nto designed to "pull" (well most arent) they are designed to push.. while submerged.. dont go cheap on yer parts dude.. even if yer bored...and broke.. __________________ Jack of ALL trades, Master of none.. (but one... procrastination) Army vet 02-08 RIP El Jay! Miss you brother! http://67-72chevytrucks.com/vboard/s...d.php?t=343538 http://67-72chevytrucks.com/vboard/s...d.php?t=386042

07-19-2009, 09:37 PM	#9
pokethesmot profeshinaly unimployed Join Date: Dec 2008 Location: hazlehurst, GA Posts: 1,232	Re: fuel pump how do i check to see if the cam is gone cuz i just highly doubt it is the fuel pump and i know nuthens clogged cuz i can blow air through the fuel pump __________________ my ride click here my myspace "having mud flaps is like asking for a smaller trophy"

07-19-2009, 10:15 PM	#10
dammitmitchell the pollock Join Date: May 2008 Location: abilene, texas Posts: 4,423	Re: fuel pump pokes.. you need to go with THE SIMPLEST SOLUTION first... ALWAYS.. cheap pump.. possibly out.. could be the solution... seeing how there is a ton of ghetto ass PO "solutions" instead of real repirs.. i would start checking everythign before you touch.. even think about..touching or blaming the motor.. the VERY first thing i would do is test the fuel pump at the lines closest to it to see if it's even pumping fuel.. at all.. check your fuel filter for garbage... pull and check the pump see if it is still intact and functiong.. period.. when check the lines between your tank and the pump.. they can be **ty.. and case the fuel pump to "work hard" leading to failure. Especially if you are cheap and putting crap onto your truck... my truck is ugly.. loud and well dosent always run right.. but it ALWAYS gets quality parts... and as i put quality parts/ troubleshooting and repairs into it.. all the **ty chinese crap breaks and falls off/ fails etc.. so it all gets replaced with quality stuff.. period..... love u man.. but ya gotta start checking all options here... on everything you do... freaking out and fancy parts dont fix your problem.. __________________ Jack of ALL trades, Master of none.. (but one... procrastination) Army vet 02-08 RIP El Jay! Miss you brother! http://67-72chevytrucks.com/vboard/s...d.php?t=343538 http://67-72chevytrucks.com/vboard/s...d.php?t=386042

07-20-2009, 01:15 AM	#11
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	Re: fuel pump poke i didnt know u had a 400sb __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

07-20-2009, 11:34 AM	#14
dammitmitchell the pollock Join Date: May 2008 Location: abilene, texas Posts: 4,423	Re: fuel pump pull and chec all the lines.. you are allready doing it.. so might as well.. remember the most simple solution is almost always the right answer.. do allthe lines and check them out.. might just have a clog on the pickup side dude.. __________________ Jack of ALL trades, Master of none.. (but one... procrastination) Army vet 02-08 RIP El Jay! Miss you brother! http://67-72chevytrucks.com/vboard/s...d.php?t=343538 http://67-72chevytrucks.com/vboard/s...d.php?t=386042

07-20-2009, 12:55 PM	#15
pokethesmot profeshinaly unimployed Join Date: Dec 2008 Location: hazlehurst, GA Posts: 1,232	Re: fuel pump i pulled and checked all the lines i can blow air into the tank and hear it bubble __________________ my ride click here my myspace "having mud flaps is like asking for a smaller trophy"

07-20-2009, 01:25 PM	#16
dammitmitchell the pollock Join Date: May 2008 Location: abilene, texas Posts: 4,423	Re: fuel pump what about pulling? that's the important part.. have you checkek your float ever? ever seen teh strainer or anything that is in your tank?.. just my opinion.. __________________ Jack of ALL trades, Master of none.. (but one... procrastination) Army vet 02-08 RIP El Jay! Miss you brother! http://67-72chevytrucks.com/vboard/s...d.php?t=343538 http://67-72chevytrucks.com/vboard/s...d.php?t=386042

07-20-2009, 01:44 PM	#17
pokethesmot profeshinaly unimployed Join Date: Dec 2008 Location: hazlehurst, GA Posts: 1,232	Re: fuel pump well i pulled the line right next to the pump put it into a container of gas and it wouldnt even suck that up __________________ my ride click here my myspace "having mud flaps is like asking for a smaller trophy"



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07-20-2009, 02:25 PM	#18
dammitmitchell the pollock Join Date: May 2008 Location: abilene, texas Posts: 4,423	Re: fuel pump well then remove the pump and rotate the motor over a few times to see if the rod is actuating the pump itself.. if the rod is moving th epump is **.. then you have to find out why the pump is **ting on you (cheap parts>?) __________________ Jack of ALL trades, Master of none.. (but one... procrastination) Army vet 02-08 RIP El Jay! Miss you brother! http://67-72chevytrucks.com/vboard/s...d.php?t=343538 http://67-72chevytrucks.com/vboard/s...d.php?t=386042

07-20-2009, 03:31 PM	#20
dammitmitchell the pollock Join Date: May 2008 Location: abilene, texas Posts: 4,423	Re: fuel pump wow way to whine.. ive got three.. hahaaahahahahhahah whiner hahahhaha j/k __________________ Jack of ALL trades, Master of none.. (but one... procrastination) Army vet 02-08 RIP El Jay! Miss you brother! http://67-72chevytrucks.com/vboard/s...d.php?t=343538 http://67-72chevytrucks.com/vboard/s...d.php?t=386042

07-20-2009, 06:02 PM	#21
pokethesmot profeshinaly unimployed Join Date: Dec 2008 Location: hazlehurst, GA Posts: 1,232	Re: fuel pump well dang shure enough its a faulty fuel pump the lever had no tension to it it was just floppin around __________________ my ride click here my myspace "having mud flaps is like asking for a smaller trophy"

07-20-2009, 08:58 PM	#22
pokethesmot profeshinaly unimployed Join Date: Dec 2008 Location: hazlehurst, GA Posts: 1,232	Re: fuel pump i HATE installing fuel pumps so so bad..its a pain in the ass...i tried installing a old one i had sitting around but it didnt work eather so i gotta go to the store tomorrow and get another one __________________ my ride click here my myspace "having mud flaps is like asking for a smaller trophy"

07-20-2009, 09:15 PM	#23
mongoose Registered User Join Date: Feb 2009 Location: slurrey, bc. Posts: 1,134	Re: fuel pump ??rotate the motor untill the rod goes all the way up and shove the pump in and bolt it on one of the easiest things to change out. __________________ -'73 c/10 - Low with Go - will be complete... probably never. -'90 2wd Blazer - well... soon enough anyways. -'84 SWB - the daily gas guzzler.

07-20-2009, 09:35 PM	#24
pokethesmot profeshinaly unimployed Join Date: Dec 2008 Location: hazlehurst, GA Posts: 1,232	Re: fuel pump even if the motor is roted the rod always slides back down i gotta hold it up with a screw driver and then try to position the pump in __________________ my ride click here my myspace "having mud flaps is like asking for a smaller trophy"

07-20-2009, 09:47 PM	#25
78 Chevyrado Account Suspended Join Date: Dec 2007 Location: Unnapreciative, Trollville Posts: 2,079	Re: fuel pump Put a big blob of grease on the rod in the hole and that will hold it in the hole long enough to get the pump bolted on.

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