Just did my own swap with the help of this video. Many thanks for that! Running fine so far. But did notice that the filter sock provided is much smaller than the original. Hope not a big issue, also some of the comments mention fuel starvation on low tank. Will keep an eye and at least I’ll know what it is if it happens.
Personal preference, and to cause less fuel starvation issues, but I always fit the OEM filter sock as its about 50% bigger than the supplied one and stops you headbutting the steering wheel when you leave a roundabout with 1/4 tank left lol
I changed out the fuel pump on my Impreza last year as it was making a startlingly loud whine and 'people' told me that's because it was on the way out. It was a 'like for like' as the existing one was a Walbro 255 installed as part of the PPP, I also swapped over the supplied 'teabag' too. I noticed that the contacts on the fuel sender were a bit worn but ignored that. All re-assembled and everything was ok. A few months down the line and I got a CEL, checked diagnostics and it turned out to be a dodgy signal from the fuel sender ....D'OH!!
Good lesson there. Those plugs, because they are always connected, stretch the pins so can help to squeeze them up a bit to ensure good contact. Good spot and fix 👍
Hi Duncan, great video. I fitted a walbro 255 pump on my forester xt and now its throwing engine misfire codes. I used the plug and play harness that came with the kit do you think this could be the issue ?
@@racedynamix thanks for the quick response, I was finding a lot of talk about it could be causing a no start after it was running and got to temperature, runs awesome just won’t restart, let it cool back down and fires right up, started after changing fuel pump. Changed fuel filter, now since there is no fuel temperature sensor I’m thinking either fuel pressure regulator or possible bad injectors. Thanks again for sharing your expertise, very helpful, awesome channel!!
@@floydcoppage9423 hmm. If it has a 32but ecu it 'may' have a temp sensor. Looks like a small black nodule with 2 wires. As far as problem solving is concerned I would start with the easiest and retrace your steps. So yeah fuel pump assembly would be a good start. Next understanding what is getting hot.. engine sensors can do that and I have seen many times when a cam or crank sensor start failing as they heat up or wiring degrades. Really expensive to replace all though so wouldnt recommend it. Was anything else changed ?
The genuine walbro filter sock is absolutely fine.. It's the fake ones that can cause issues. Just need to make sure the filter sits at the bottom of the tank.. Hence why I use a zip tie 👍
Hi Duncan, just installed my walbro 255, and now it makes about a 3 second 'priming " sound every time now when i turn ignition to accessories before starting. Is this normal?
It shouldn't need it.. If the std pump was just a little tired the worst that would happen is it will run a little richer. If it was mapped with a failing pump I would let the owner know that it needs to come back to be made right.
Anyway..not bashing walbro... But there is plenty other higher flow pump in 340lph region that flows better at high boost and runs quieter than walbro... Because in my experience, over time, the walbro will drops fuel pressure in long distance driving (when the walbro becames old/high mileage) And tue flow rate at 45~60psi region also not that much better...outflowed by more modern pump design at similar pricing (also obviously quieter and draw less amperage) due different design than heavy metal gerotor type impeller inside of the walbro
Great vid, showed all the steps in detail thanks. Doing mine this weekend
My pleasure.. Thanks for watching and hope yours goes well 😎
@@racedynamix it will now
Thanks so much! You made it look so much more easier than all the other videos
That's great.. I hope it works out that way for you 👍
Just did my own swap with the help of this video. Many thanks for that! Running fine so far. But did notice that the filter sock provided is much smaller than the original. Hope not a big issue, also some of the comments mention fuel starvation on low tank. Will keep an eye and at least I’ll know what it is if it happens.
Well done 👍
The smaller sock isn't an issue so long as it sits in the bottom of the fuel tank 👍👍
Personal preference, and to cause less fuel starvation issues, but I always fit the OEM filter sock as its about 50% bigger than the supplied one and stops you headbutting the steering wheel when you leave a roundabout with 1/4 tank left lol
The "why can I smell fuel in the car " rubber seal of death haha perished locators are a pain in the chuffer!
🤣
I changed out the fuel pump on my Impreza last year as it was making a startlingly loud whine and 'people' told me that's because it was on the way out.
It was a 'like for like' as the existing one was a Walbro 255 installed as part of the PPP, I also swapped over the supplied 'teabag' too.
I noticed that the contacts on the fuel sender were a bit worn but ignored that. All re-assembled and everything was ok.
A few months down the line and I got a CEL, checked diagnostics and it turned out to be a dodgy signal from the fuel sender ....D'OH!!
Good lesson there. Those plugs, because they are always connected, stretch the pins so can help to squeeze them up a bit to ensure good contact. Good spot and fix 👍
Really enjoyed that... thanks Duncan 👍
Thanks Lee 😊👍
Thanks for the video, giving this a bash next week 👍🏻 subscribed.
Thanks for the sub! And good luck.. I'm sure it will be fine 👍
Should you upgrade the 12v feed directly off battery using a relay?
for a walbro 255 an upgraded feed isn't needed 👍
Hi Duncan, great video. I fitted a walbro 255 pump on my forester xt and now its throwing engine misfire codes. I used the plug and play harness that came with the kit do you think this could be the issue ?
it's a possibility but very unusual. I have seen lots of issues with some of the hose supplied with some kits
Is the fuel temperature sensor on that assembly or is it located somewhere else?
There isn't a fuel temp sensor on most.. At least, I have never seen one on a pre 2007 UK or eu car. Added to say that some usdm 2003/4 ish have them
@@racedynamix thanks for the quick response, I was finding a lot of talk about it could be causing a no start after it was running and got to temperature, runs awesome just won’t restart, let it cool back down and fires right up, started after changing fuel pump. Changed fuel filter, now since there is no fuel temperature sensor I’m thinking either fuel pressure regulator or possible bad injectors. Thanks again for sharing your expertise, very helpful, awesome channel!!
@@floydcoppage9423 well... Just done some investigation and it depends on Yr and model of car as to whether it has one. what is your car ?
@@racedynamix it’s a U.S. 2003 wrx
@@floydcoppage9423 hmm. If it has a 32but ecu it 'may' have a temp sensor. Looks like a small black nodule with 2 wires.
As far as problem solving is concerned I would start with the easiest and retrace your steps. So yeah fuel pump assembly would be a good start.
Next understanding what is getting hot.. engine sensors can do that and I have seen many times when a cam or crank sensor start failing as they heat up or wiring degrades. Really expensive to replace all though so wouldnt recommend it. Was anything else changed ?
I'm pretty sure that you shouldn't use the walbro fuel sock. They cause problems...
The genuine walbro filter sock is absolutely fine.. It's the fake ones that can cause issues. Just need to make sure the filter sits at the bottom of the tank.. Hence why I use a zip tie 👍
Usually they got the wrong type of filter that sits flat at the bottom of the pump and wasnt fully reach the bottom of the fuel tank...
Hi Duncan, just installed my walbro 255, and now it makes about a 3 second 'priming " sound every time now when i turn ignition to accessories before starting. Is this normal?
Yeah.. Normal 👍👍
@@racedynamix thanks
Would you remap after that upgrade?
It shouldn't need it.. If the std pump was just a little tired the worst that would happen is it will run a little richer. If it was mapped with a failing pump I would let the owner know that it needs to come back to be made right.
Hi Duncan im getting my blobeye tuned on Saturday, bit nervous, what are the chances it could blow? Its stock other than tbe. Is it very risky? Tia
Less risky than driving it unmapped if a recognised subaru tuner 👍
@racedynamix on the dyno during the tune i mean, do many have issues?
@@johnorr2241 very very rare 👍
@racedynamix ok thanks mate, appreciate your info im new to all of this
Anyway..not bashing walbro...
But there is plenty other higher flow pump in 340lph region that flows better at high boost and runs quieter than walbro...
Because in my experience, over time, the walbro will drops fuel pressure in long distance driving (when the walbro becames old/high mileage)
And tue flow rate at 45~60psi region also not that much better...outflowed by more modern pump design at similar pricing (also obviously quieter and draw less amperage) due different design than heavy metal gerotor type impeller inside of the walbro