C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Looking for Racetronix/Walbro ALTERNATIVE

Thread Tools
 
Search this Thread
 
Old Jul 14, 2015 | 08:07 PM
  #1  
aklim's Avatar
aklim
Thread Starter
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,497
Likes: 3,298
From: Hartford WI
Default Looking for Racetronix/Walbro ALTERNATIVE

Just trying to diagnose a hard starting alternative. I tried to go to Racetronix but no phone. Called Walbro but there is only 1 guy there and not sure if he is at work today but voice mail, aka phone tag.

Problem is I wanted to know why my fuel pressure is dropping after shutdown more rapidly. Thought it might be the FPR and got it changed to a Kirban unit to test. Same issue. Thankfully that was a freebie to me. What I need to know is whether the 255LPH pump has a check valve to prevent flowback or not.

Option 1: Call a vendor. WTF!! I paid Racetronix and now I have to ask someone else for help? Does that someone know the pump I have?

Option 2: Called Walbro but there is only 1 guy and not sure where he is so we might have to play phone tag.

Option 3: Hopefully someone has the HSR with the stock FPR or Kirban unit to see if they have the same thing and they also need to have a Walbro pump.

So, if I have to change the pump, I'd rather NOT do business with a company that cannot provide phone support for a product they sell. A cursory search tells me that they rather take your money and send you somewhere else for tech support. What are my alternative to replacement of pump? TIA
Reply
Old Jul 14, 2015 | 08:57 PM
  #2  
WVZR-1's Avatar
WVZR-1
Team Owner
20 Year Member
Veteran: Army
Active Streak: 30 Days
Liked
 
Joined: Sep 2003
Posts: 25,406
Likes: 2,744
Default

Not an alternative but maybe someone that "CARES" - These people do use and suggest Walbro pumps but they also are very specialized and could likely discuss your problem with some expertise. Maybe NOT the solution you were looking for but these people generally perform pretty well.

http://www.tanksinc.com/
Reply
Old Jul 14, 2015 | 10:42 PM
  #3  
aklim's Avatar
aklim
Thread Starter
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,497
Likes: 3,298
From: Hartford WI
Default

Originally Posted by WVZR-1
Not an alternative but maybe someone that "CARES" - These people do use and suggest Walbro pumps but they also are very specialized and could likely discuss your problem with some expertise. Maybe NOT the solution you were looking for but these people generally perform pretty well.

http://www.tanksinc.com/
Tanks. I'll give them a buzz.
Reply
Old Jul 14, 2015 | 11:28 PM
  #4  
SpedRacr93's Avatar
SpedRacr93
Burning Brakes
25 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Nov 1999
Posts: 859
Likes: 17
From: Houston TX
Default

Originally Posted by aklim
Problem is I wanted to know why my fuel pressure is dropping after shutdown more rapidly. TIA
Did leak-down occur right after changing to this pump?

Not saying you don't have a tank issue, but it could be a bad injector as well. Have you tested your gas cap (is it holding pressure)?
Reply
Old Jul 14, 2015 | 11:56 PM
  #5  
aklim's Avatar
aklim
Thread Starter
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,497
Likes: 3,298
From: Hartford WI
Default

Originally Posted by SpedRacr93
Did leak-down occur right after changing to this pump?

Not saying you don't have a tank issue, but it could be a bad injector as well. Have you tested your gas cap (is it holding pressure)?
That was a long time ago and it has been since. I was told that it was a the way Holley did their FPR and I got my hands on a Kirban but they told me it was that way and I was so busy with other things didn't think of it.

Don't think it is a bad injector since fuel pressure was good although it bleeds down quickly BEFORE and AFTER I sent the injectors to FIC for testing.

How does the cap affect it? The pressure should be in the lines even after shutdown and maintain for a long time. Clamped off return hose and same thing. If it is the FPR,it should bleed back into the return line. If it is the injectors, they are leaking at a fast rate and the cylinders should have fuel.

Kinda why I am wondering if I have a fuel pump that DOES perform and has a faulty check valve. That would explain why it pumps up pressure and maintains pressure BUT bleeds off easily. Also if there is no check valve, it is the same. That is why I need to know if there is a check valve or whether the fuel hose I put in is leaking and/or not clamped tightly and the fuel is leaking out there.

Last edited by aklim; Jul 14, 2015 at 11:58 PM.
Reply
Old Jul 15, 2015 | 12:00 AM
  #6  
antfarmer2's Avatar
antfarmer2
Race Director
 
Joined: Mar 2015
Posts: 15,926
Likes: 579
Default

Clamp off the fuel line from the tank and see how it bleeds off
Reply
Old Jul 15, 2015 | 12:20 AM
  #7  
aklim's Avatar
aklim
Thread Starter
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,497
Likes: 3,298
From: Hartford WI
Default

Originally Posted by antfarmer2
Clamp off the fuel line from the tank and see how it bleeds off
That will be tricky since I would have to make it a 1 man, 1 woman job and involve the wife to turn it on and I clamp it off and she can turn it off, I think.
Reply
Old Jul 15, 2015 | 02:12 AM
  #8  
cgantner5150's Avatar
cgantner5150
Pro
10 Year Member
 
Joined: Feb 2010
Posts: 677
Likes: 3
From: Metairie LA
Default

I am running a HSR with the Kirban FPR and a stock pump (Advance Auto replacement). Mine holds pressure after shut down but only for about an hour, tops. Wondered about this as it is no where close to what I read it should be.

When I was having hard start issues, it was only while warm or hot. It ended up being the distributor cap (small cap HEI). The center electrode was completely gone. Burned little nub was all that was there. I wa surprised it ran at all. Replaced it with an Accel and have had no issues since. I probably should check it though.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-1

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-2

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-3

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-4

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-5

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-6

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-7

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-8

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-9

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
Old Jul 15, 2015 | 04:26 AM
  #9  
WVZR-1's Avatar
WVZR-1
Team Owner
20 Year Member
Veteran: Army
Active Streak: 30 Days
Liked
 
Joined: Sep 2003
Posts: 25,406
Likes: 2,744
Default

You've used two different FPR's with same/similar results so...

If you have no problems "other than" the bleed off why wouldn't you first check your in tank plumbing. That seems like maybe the first stop. Rather than chasing information if the pump is supplying the pressure/volume your interested in do a positive fix and add a check valve in-line.

Maybe check the complete fuel supply plumbing.
Reply
Old Jul 15, 2015 | 07:12 PM
  #10  
Racetronix's Avatar
Racetronix
Supporting Vendor
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Dec 2001
Posts: 1,573
Likes: 31
From: A dealer near you.
Default

Originally Posted by aklim
Just trying to diagnose a hard starting alternative. I tried to go to Racetronix but no phone. Called Walbro but there is only 1 guy there and not sure if he is at work today but voice mail, aka phone tag.

Problem is I wanted to know why my fuel pressure is dropping after shutdown more rapidly. Thought it might be the FPR and got it changed to a Kirban unit to test. Same issue. Thankfully that was a freebie to me. What I need to know is whether the 255LPH pump has a check valve to prevent flowback or not.

Option 1: Call a vendor. WTF!! I paid Racetronix and now I have to ask someone else for help? Does that someone know the pump I have?

Option 2: Called Walbro but there is only 1 guy and not sure where he is so we might have to play phone tag.

Option 3: Hopefully someone has the HSR with the stock FPR or Kirban unit to see if they have the same thing and they also need to have a Walbro pump.

So, if I have to change the pump, I'd rather NOT do business with a company that cannot provide phone support for a product they sell. A cursory search tells me that they rather take your money and send you somewhere else for tech support. What are my alternative to replacement of pump? TIA
Our support forum is available 24/7 to help you properly diagnose your system.

http://racetronix.com/sales-support/support/
Reply

Get notified of new replies

To Looking for Racetronix/Walbro ALTERNATIVE





All times are GMT -4. The time now is 09:51 PM.

story-0
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-2
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-3
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-4
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-5
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-6
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-7
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-8
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-9
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE