Drag Racing Tech
Sponsored by:
Sponsored by:

where's the pressure?

Thread Tools
 
Search this Thread
 
Old Oct 20, 2002 | 03:45 PM
  #1  
1dirtyZ's Avatar
Thread Starter
8 Second Club
iTrader: (1)
 
Joined: Nov 2001
Posts: 3,697
Likes: 1
From: the not so stock tribe
Default where's the pressure?

i'm having fule pressure issues with my new walbro intank pump, the pressure holds at 50 at idle and drops to 35 psi at high rpms .
the car also has a hard time building pressure when i turn the ignition on.
what could be causing this??
i already replaced the fule filter.
Reply
Old Oct 20, 2002 | 06:07 PM
  #2  
Colonel's Avatar
TECH Senior Member
 
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
Default Re: where's the pressure?

Check the pickup tube. It's quite common for them to crack or even fall completely off.
Reply
Old Oct 20, 2002 | 09:22 PM
  #3  
1dirtyZ's Avatar
Thread Starter
8 Second Club
iTrader: (1)
 
Joined: Nov 2001
Posts: 3,697
Likes: 1
From: the not so stock tribe
Default Re: where's the pressure?

what do you mean by pick up tube, cause my pump comes as a complete module wich has the pump sitting in a kind of bucket and the filter/mesh/sock thingy just mounts directly on to the inlet of the pump.
are you reffering to the pump that has pickup hose running to the bottom of the tank from the inlet side of the pump??
Reply
Old Oct 21, 2002 | 10:49 AM
  #4  
Colonel's Avatar
TECH Senior Member
 
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
Default Re: where's the pressure?

I know my Walbro intank had a tube that failed. It caused similar symptoms as what you describe. I upgraded it to a piece of high pressure line.

Sure there's not a tube in that sock/filter thingy? If you filter is fine and your line is not blocked or crimped, it just about has to be in the tank.
Reply
Old Oct 21, 2002 | 11:16 AM
  #5  
1dirtyZ's Avatar
Thread Starter
8 Second Club
iTrader: (1)
 
Joined: Nov 2001
Posts: 3,697
Likes: 1
From: the not so stock tribe
Default Re: where's the pressure?

i dont get the second part of your reply?

and the pump came with a high pressure fule line.

could the problem be from that thing that looks like a regulator in the module?
Reply




All times are GMT -5. The time now is 09:30 AM.

story-0
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-1
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-2
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-3
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-4
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-5
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-6
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-7
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-8
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-9
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE