New Walbro 400 Fuel pump long start - Viper Alley - Dodge Viper Forum -SRT Viper
 
Go Back   Viper Alley - Dodge Viper Forum -SRT Viper » Viper Alley » Viper Discussions - Gen I & II
» Live Feed « · War Room · Graffiti Wall · Chat · Arcade · Viper Blogs ·  

Viper Discussions - Gen I & II Discussions of Viper-related subjects covering Gen-I and Gen-II models.

New Walbro 400 Fuel pump long start

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Reply
 
Thread Tools Display Modes

New Walbro 400 Fuel pump long start
Old May 11th, 2017, 01:06 PM   #1
Enthusiast
 
quazmosis's Avatar
 
quazmosis is offline
Join Date: May 2013
Posts: 183
quazmosis is definately JV with 310 pointsquazmosis is definately JV with 310 pointsquazmosis is definately JV with 310 pointsquazmosis is definately JV with 310 points
Rep Power: 7
New Walbro 400 Fuel pump long start

I recently put in a Walbro 400 fuel pump. Since I've done this, it takes a long time for the car to turn over and start. Takes about 5 seconds of turning before it fires. It feels like its about to NOT start, but it does however start. (knock on wood) I do leave the acc on for about 2-3 seconds to build pressure, but it still has a long turn time for starting. Is this normal? Once its running, it idles fine, and runs fine. Just upon starting it lags waaaaay more than the stock pump. Fuel pressure is around 50 so that seems to check out normal.
  Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 

Old May 11th, 2017, 01:11 PM   #2
Suspended

 
BlackSnake99's Avatar
 
BlackSnake99 is offline
Join Date: Aug 2009
Location: wherever
Posts: 23,604
BlackSnake99 is not afraid of bears with 1434068 pointsBlackSnake99 is not afraid of bears with 1434068 pointsBlackSnake99 is not afraid of bears with 1434068 pointsBlackSnake99 is not afraid of bears with 1434068 pointsBlackSnake99 is not afraid of bears with 1434068 pointsBlackSnake99 is not afraid of bears with 1434068 pointsBlackSnake99 is not afraid of bears with 1434068 pointsBlackSnake99 is not afraid of bears with 1434068 pointsBlackSnake99 is not afraid of bears with 1434068 pointsBlackSnake99 is not afraid of bears with 1434068 pointsBlackSnake99 is not afraid of bears with 1434068 points
Rep Power: 9579
Mine did not do that.
  Reply With Quote Quick reply to this message

Old May 11th, 2017, 01:15 PM   #3
Senior Member
 
EllowViper's Avatar
 
EllowViper is offline
Join Date: Jul 2007
Posts: 1,680
EllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 points
Rep Power: 66
How did you secure the fuel line to the pump output? When I did mine, I 'thought' I had secured the line to the nipple pretty tightly....but upon having a similar experience as you are having, I took the pump assembly back out, pressure tested the lines, and observed air weeping out from the line connection...so in effect, it was bleeding pressure out of the fuel system after the "key on" delay. It also effectively lowers your line pressure when running too since this happens before the FPR has a chance to regulate anything over 55 psi. You should be reading a strong 55 psi when running.
__________________
"Aspice, officio fungeris sine spe honoris amplioris." (Face it, you're stuck in a dead end job.)
  Reply With Quote Quick reply to this message

Old May 11th, 2017, 02:42 PM   #4
Senior Member
 
dave6666's Avatar
 
dave6666 is offline
Join Date: Dec 2006
Posts: 30,740
dave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 points
Rep Power: 233
FYI the "key on" effect works for about 1/2 sec priming the pump. 2 - 3 seconds is 1-1/2 to 2-1/2 wasted seconds of nothing happening. If you want 3 seconds you have to key off and then key on 5 more times.
  Reply With Quote Quick reply to this message

Old May 12th, 2017, 11:31 AM   #5
Enthusiast
 
quazmosis's Avatar
 
quazmosis is offline
Join Date: May 2013
Posts: 183
quazmosis is definately JV with 310 pointsquazmosis is definately JV with 310 pointsquazmosis is definately JV with 310 pointsquazmosis is definately JV with 310 points
Rep Power: 7
Quote:
Originally Posted by EllowViper View Post
How did you secure the fuel line to the pump output? When I did mine, I 'thought' I had secured the line to the nipple pretty tightly....but upon having a similar experience as you are having, I took the pump assembly back out, pressure tested the lines, and observed air weeping out from the line connection...so in effect, it was bleeding pressure out of the fuel system after the "key on" delay. It also effectively lowers your line pressure when running too since this happens before the FPR has a chance to regulate anything over 55 psi. You should be reading a strong 55 psi when running.
Are you talking about the little 6 inch hose that's supplied by ROE in their kit? The one that goes vertical? If so I have them secured with the screw hose clamps. But I can certainly take it back out and check it.
  Reply With Quote Quick reply to this message

Old May 12th, 2017, 12:26 PM   #6
Senior Member
 
SNKEBIT's Avatar
 
SNKEBIT is offline
Join Date: Dec 2003
Posts: 5,888
Blog Entries: 3
SNKEBIT is not afraid of bears with 19948 pointsSNKEBIT is not afraid of bears with 19948 pointsSNKEBIT is not afraid of bears with 19948 pointsSNKEBIT is not afraid of bears with 19948 pointsSNKEBIT is not afraid of bears with 19948 pointsSNKEBIT is not afraid of bears with 19948 pointsSNKEBIT is not afraid of bears with 19948 pointsSNKEBIT is not afraid of bears with 19948 pointsSNKEBIT is not afraid of bears with 19948 pointsSNKEBIT is not afraid of bears with 19948 pointsSNKEBIT is not afraid of bears with 19948 points
Rep Power: 148
Quote:
Originally Posted by quazmosis View Post
Are you talking about the little 6 inch hose that's supplied by ROE in their kit? The one that goes vertical? If so I have them secured with the screw hose clamps. But I can certainly take it back out and check it.
From the pump to the FPR in the top of the basket. Common problem after switching pumps in stock basket.
  Reply With Quote Quick reply to this message

Old May 12th, 2017, 12:30 PM   #7
Senior Member
 
dave6666's Avatar
 
dave6666 is offline
Join Date: Dec 2006
Posts: 30,740
dave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 pointsdave6666 is not afraid of bears with 31164 points
Rep Power: 233
Quote:
Originally Posted by SNKEBIT View Post
From the pump to the FPR in the top of the basket. Common problem after switching pumps in stock basket.
If that hose connection is so fragile it's a common installation problem I'm gonna have to throw my entire bag of cheetos at that system.

There's a clue there Waldo...
  Reply With Quote Quick reply to this message

Old May 16th, 2017, 07:30 AM   #8
Rodent Whisperer
 
ishootstuff's Avatar
 
ishootstuff is offline
Join Date: Nov 2014
Location: Lake Placid, Florida
Posts: 1,250
ishootstuff is not afraid of bears with 9837 pointsishootstuff is not afraid of bears with 9837 pointsishootstuff is not afraid of bears with 9837 pointsishootstuff is not afraid of bears with 9837 pointsishootstuff is not afraid of bears with 9837 pointsishootstuff is not afraid of bears with 9837 pointsishootstuff is not afraid of bears with 9837 pointsishootstuff is not afraid of bears with 9837 pointsishootstuff is not afraid of bears with 9837 pointsishootstuff is not afraid of bears with 9837 pointsishootstuff is not afraid of bears with 9837 points
Rep Power: 68
Quote:
Originally Posted by dave6666 View Post
FYI the "key on" effect works for about 1/2 sec priming the pump. 2 - 3 seconds is 1-1/2 to 2-1/2 wasted seconds of nothing happening. If you want 3 seconds you have to key off and then key on 5 more times.
Unless you have a crappy Gen1(.5) that has a NLA fuel pressure regulator/check valve that has failed. I need about 5 full seconds of priming in the morning. Sux.
  Reply With Quote Quick reply to this message

Old May 17th, 2017, 08:24 AM   #9
Senior Member
 
EllowViper's Avatar
 
EllowViper is offline
Join Date: Jul 2007
Posts: 1,680
EllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 pointsEllowViper is not afraid of bears with 8427 points
Rep Power: 66
Quote:
Originally Posted by SNKEBIT View Post
From the pump to the FPR in the top of the basket. Common problem after switching pumps in stock basket.
This. Unfortunatley, to check it you'll need to pull the basket out....and then on the outlet fitting on the top of the basket, put some air pressure against it and see where it blows out from. THe FPR should pop-open at 55 PSI (sort of cool to see how it works) but prior to that happening, you'll be able to see if the line holds pressure or is leaking/weeping at one of the connection....or even if the check valve on the pump itself is bad. The pump should not let pressure go back through it when off. In the top of the pump output (if you peer down into it) you'll see the check valve. Rare for that to fail, but hey...you know the deal.
  Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  Viper Alley - Dodge Viper Forum -SRT Viper » Viper Alley » Viper Discussions - Gen I & II

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Viper Alley - Dodge Viper Forum -SRT Viper forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Insurance
Please select your insurance company (Optional)

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes
Postbit Selector
Switch to Left (legacy) postbit Use Vertical (Legacy) Postbit

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
New Viper Classified: New Walbro GSS 341 fuel pump MTGTS Viper Discussions - Gen I & II 0 March 3rd, 2012 08:29 AM
HELP. Car wont start. Fuel pump problem thaimonkee Viper Discussions - Gen I & II 35 August 17th, 2010 07:39 PM
Walbro high press. fuel pump group buy Mister Bone Viper Discussions - Gen I & II 9 January 11th, 2003 11:48 AM



All times are GMT -5. The time now is 11:51 PM.

vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
ViperAlley.com is in no way affiliated with Daimler Chrysler. Dodge, Viper, RT/10, the Viper logo and likeness are registered trademarks of Daimler Chrysler.
The contents of this site are owned by ViperAlley.Com and may not be used or reproduced without the express written permission of the Administrator.