Walbro 400 lph failed

Reply Subscribe

Thread Tools

Search this Thread

Apr 1, 2013, 11:16 AM

acssa

Evolving Member

Thread Starter

iTrader: (2)

Join Date: Dec 2009

Location: South Africa

Posts: 312

Likes: 0

Received 0 Likes on 0 Posts

Walbro 400 lph failed

My walbro 400lph failed today... it still pump some fuel but very little/weak. Car will not start. I ran E50 fuel and 50psi base pressure.

Anyone else had 400 lph pump fail?

Reply Like

Apr 1, 2013, 11:18 AM

joseph143

Evolved Member

iTrader: (8)

Join Date: Sep 2006

Location: El Paso, Tx

Posts: 1,124

Likes: 0

Received 4 Likes on 4 Posts

Everyone who has ran ethanol thru it...

Ethanol reacts with the negative carbon brush that energizes the pump.

Reply Like

Apr 1, 2013, 11:36 AM

Ev0ikon

Evolved Member

iTrader: (18)

Join Date: Jan 2004

Location: 3rd Rock {from = sun}

Posts: 3,677

Likes: 3

Received 9 Likes on 9 Posts

Quote:

Originally Posted by joseph143

Everyone who has ran ethanol thru it...

Ethanol reacts with the negative carbon brush that energizes the pump.

^Wha the said.
Save your coins for another one that is listed to support Ethanol.

Reply Like

Apr 1, 2013, 11:49 AM

bitterchild

Newbie

iTrader: (20)

Join Date: Jun 2012

Location: MD

Posts: 92

Likes: 0

Received 0 Likes on 0 Posts

Rebuild w ethanol safe brush

Reply Like

Apr 1, 2013, 12:05 PM

Ev0ikon

Evolved Member

iTrader: (18)

Join Date: Jan 2004

Location: 3rd Rock {from = sun}

Posts: 3,677

Likes: 3

Received 9 Likes on 9 Posts

Quote:

Originally Posted by bitterchild

Rebuild w ethanol safe brush

Hi.
Have you a link where I could pick this up? TIA!

Reply Like

Apr 1, 2013, 02:33 PM

way2qik

Evolved Member

iTrader: (5)

Join Date: Mar 2009

Location: With my admirers in the BACK ROOM!

Posts: 651

Likes: 3

Received 4 Likes on 4 Posts

Quote:

Originally Posted by joseph143

Everyone who has ran ethanol thru it...

Ethanol reacts with the negative carbon brush that energizes the pump.

yep. Mine failed as well. I put the ethanol friendly ones in the tank and haven't had a problem since.

Reply Like

Apr 1, 2013, 03:05 PM

evo8426

Evolved Member

iTrader: (27)

Join Date: Jan 2006

Location: Charlotte, North Carolina

Posts: 4,248

Likes: 1

Received 8 Likes on 8 Posts

Quote:

Originally Posted by Ev0ikon

Hi.
Have you a link where I could pick this up? TIA!

The Walbro 416 is *basically* the same pump but e85 compatible.
https://www.evolutionm.net/forums/ev...fuel-pump.html

Last edited by evo8426; Apr 2, 2013 at 03:11 AM.

Reply Like

Trending Topics

Act New Twin Disk Who Running One?

229

45.7k
Rear Wheel Bearing change

13

5.8k
Active duty military and Veteran profile icons now available

435

73.4k
Turn my maintenance notification back on

3

339
spotted!!

7.8k

990.2k

Apr 1, 2013, 03:06 PM

joseph143

Evolved Member

iTrader: (8)

Join Date: Sep 2006

Location: El Paso, Tx

Posts: 1,124

Likes: 0

Received 4 Likes on 4 Posts

No such thing as a ethanol friendly one... Carbon brushes being carbon and all... I'm a little hazy on the physics its been a year since mine failed. But a negitively charged carbon atom is attached to the ionized ethanol molecule and slowly errodes the brushes based on useage. One pump lasted me 3 months and the other 9 days.

Reply Like

Apr 1, 2013, 03:07 PM

joseph143

Evolved Member

iTrader: (8)

Join Date: Sep 2006

Location: El Paso, Tx

Posts: 1,124

Likes: 0

Received 4 Likes on 4 Posts

Quote:

Originally Posted by evo8426

The Walbro 416 is the same pump but e85 compatible.

Its actually quite different i. Size dimention and flow volume... So no its completely different and is sealed so that it never touches the ethanol making it compatible

Reply Like

Apr 2, 2013, 09:01 AM

#10

Ev0ikon

Evolved Member

iTrader: (18)

Join Date: Jan 2004

Location: 3rd Rock {from = sun}

Posts: 3,677

Likes: 3

Received 9 Likes on 9 Posts

Quote:

Originally Posted by joseph143

Its actually quite different i. Size dimention and flow volume... So no its completely different and is sealed so that it never touches the ethanol making it compatible

There you have it folks. There is no rebuild bushing/kit for the 400. Get the 416 if you want to pump Ethanol.

Reply Like

Apr 2, 2013, 09:24 AM

#11

project_skyline

Evolved Member

iTrader: (30)

Join Date: Jun 2007

Location: Colorado

Posts: 2,532

Likes: 0

Received 1 Like on 1 Post

Ya don't try running ethanol with the 400, we had two fail in less then 1000 miles each. The e85 pumps have no issues.

Reply Like

Apr 2, 2013, 10:22 AM

#12

mrfred

EvoM Guru

iTrader: (50)

Join Date: Mar 2006

Location: Tri-Cities, WA // Portland, OR

Posts: 9,675

Likes: 25

Received 129 Likes on 97 Posts

Quote:

Originally Posted by project_skyline

Ya don't try running ethanol with the 400, we had two fail in less then 1000 miles each. The e85 pumps have no issues.

I fully agree with using the E85 pump for E85, but I did actually go almost a year (5000-7000 miles) on the non-E85 pump running 82% ethanol. It hadn't failed when I removed it, but flow rate had dropped somewhat from when it was new.