Walbro pump gs400 for bad stock pump?
Thread Starter
Lead Lap
Joined: Dec 2007
Posts: 546
Likes: 0
From: ky
Walbro pump gs400 for bad stock pump?
My fuel pump just went out and the walbro pump is cheaper than denso. I have never heard anything bad about walbro pumps, but was worried if the install would be hard or if it would cause any issues. I have 98 gs400 with 187000 miles on it. Also if there is a DIY for fuel pump replacement either with walbro or stock let me know as well
single walbro pump should not have any problem, and fits on the stock hangar without an issue.
it's only a problem when people run dual pump with elevated horsepower, and somehow one pump does not get enough fuel, which then kills itself and then leans your engine out.
it's only a problem when people run dual pump with elevated horsepower, and somehow one pump does not get enough fuel, which then kills itself and then leans your engine out.
Pit Crew
Joined: Jun 2022
Posts: 207
Likes: 55
From: Hawaii
I ran a Walbro after reading this thread a while back thinking it would be a nice alternative but I believe that pump to be the cause of a lot of headaches.
The Walbro comes with a different plug which requires cutting and re-soldering of the existing stock wiring. Additionally, the plastic castle-looking washer will not sit flush on the pump like how it does on the stock pump. I believe this is the cause of hard-starting (long cranking before starting) as Forward Momentum has pointed out in his fuel pump replacement video.
Word of warning to anyone who wants to try this alternative, if you’re not prepared to solder or fab components in order to get the o-rings and plastic bits to sit properly (can’t imagine how you’d do this without massive amounts of trail and error) just get an OEM fuel pump.
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Racer
Joined: May 2017
Posts: 1,525
Likes: 354
From: Utah
The Walbro is specifically for use in a GS300, it is not a direct replacement for the GS400 or 430. They can be installed but you’ll have problems with it. If you’re looking to replace your OEam pump with a quality but inexpensive replacement you should look at replacing just the pump and not the whole hanger and sending unit assembly and everything. Usually those components will have plenty of life left in them when the pump wears out. You can purchase a good replacement pump, like a Bosch, for under $50, and it should last much longer than something like an Airtex or Duralast. If your fuel pump is giving you problems, consider replacing just the pump, it’s about the size of a Roll of quarters.
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Pole Position
Joined: Nov 2018
Posts: 2,077
Likes: 576
From: CA
I think part of the idea when someone is looking into a Walbro is to prep for future power gains. But there is a big red flag here. A Walbro pump that is "cheaper" than a Denso is almost surely a fake (knock off) part. NGK and Walbro are two of the most frequent manufacturers that scammers copy and sell on eBay, Amazon, and the Alibaba/Aliexpress type sites. Part of China's criminal business practices. You absolutely must order from a licensed distributor that is listed on Walbro (Ti Automotive's) website. Ti owns Walbro.
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