- 132
- 1 310 385
Brap Stuff
Приєднався 29 сер 2017
A channel about brap stuff!
2014-2023 Honda Foreman Power Steering Pump Replacement
Replacing the power steering pump on this Honda TRX 500 FE2 BRAAAAP!!
2023
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX520FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX520FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX520FE2 FourTrax Foreman 4x4 ES EPS
TRX520FM2 FourTrax Foreman 4x4 EPS
TRX520FM6 FourTrax Foreman Rubicon EPS
2022
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX520FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX520FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX520FE2 FourTrax Foreman 4x4 ES EPS
TRX520FM2 FourTrax Foreman 4x4 EPS
TRX520FM6 FourTrax Foreman Rubicon EPS
2021
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX520FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX520FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX520FE2 FourTrax Foreman 4x4 ES EPS
TRX520FM2 FourTrax Foreman 4x4 EPS
TRX520FM6 FourTrax Foreman Rubicon EPS
2020
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX520FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX520FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX520FE2 FourTrax Foreman 4x4 ES EPS
TRX520FM2 FourTrax Foreman 4x4 EPS
TRX520FM6 FourTrax Foreman Rubicon EPS
2019
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX500FA5 FourTrax Foreman Rubicon Auto DCT
TRX500FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX500FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX500FE2 FourTrax Foreman 4x4 ES with EPS
TRX500FM1 FourTrax Foreman 4x4
TRX500FM6 FourTrax Foreman Rubicon EPS
2018
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM1 FourTrax Rancher 4x4
TRX500FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX500FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX500FE2 FourTrax Foreman 4x4 ES with EPS
TRX500FM1 FourTrax Foreman 4x4
TRX500FM6 FourTrax Foreman Rubicon EPS
2017
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX500FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX500FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX500FE2 FourTrax Foreman 4x4 ES with EPS
TRX500FM6 FourTrax Foreman Rubicon EPS
2016
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX500FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX500FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX500FE2 FourTrax Foreman 4x4 ES with EPS
TRX500FM2 FourTrax Foreman 4x4 with EPS
TRX500FM6 FourTrax Foreman Rubicon EPS
TRX500FM7 FourTrax Foreman Rubicon EPS DLX
2015
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX500FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX500FA6D FourTrax Foreman Rubicon Auto DCT EPS D
TRX500FE2 FourTrax Foreman 4x4 ES with EPS
TRX500FM2 FourTrax Foreman 4x4 with EPS
TRX500FM6 FourTrax Foreman Rubicon EPS
TRX500FM6D FourTrax Foreman Rubicon EPS DLX
2014
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX500FE2 FourTrax Foreman 4x4 ES with EPS
TRX500FM2 FourTrax Foreman 4x4 with EPS
2023
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX520FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX520FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX520FE2 FourTrax Foreman 4x4 ES EPS
TRX520FM2 FourTrax Foreman 4x4 EPS
TRX520FM6 FourTrax Foreman Rubicon EPS
2022
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX520FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX520FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX520FE2 FourTrax Foreman 4x4 ES EPS
TRX520FM2 FourTrax Foreman 4x4 EPS
TRX520FM6 FourTrax Foreman Rubicon EPS
2021
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX520FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX520FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX520FE2 FourTrax Foreman 4x4 ES EPS
TRX520FM2 FourTrax Foreman 4x4 EPS
TRX520FM6 FourTrax Foreman Rubicon EPS
2020
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX520FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX520FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX520FE2 FourTrax Foreman 4x4 ES EPS
TRX520FM2 FourTrax Foreman 4x4 EPS
TRX520FM6 FourTrax Foreman Rubicon EPS
2019
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX500FA5 FourTrax Foreman Rubicon Auto DCT
TRX500FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX500FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX500FE2 FourTrax Foreman 4x4 ES with EPS
TRX500FM1 FourTrax Foreman 4x4
TRX500FM6 FourTrax Foreman Rubicon EPS
2018
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM1 FourTrax Rancher 4x4
TRX500FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX500FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX500FE2 FourTrax Foreman 4x4 ES with EPS
TRX500FM1 FourTrax Foreman 4x4
TRX500FM6 FourTrax Foreman Rubicon EPS
2017
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX500FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX500FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX500FE2 FourTrax Foreman 4x4 ES with EPS
TRX500FM6 FourTrax Foreman Rubicon EPS
2016
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX500FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX500FA7 FourTrax Foreman Rubicon Auto DCT EPS DL
TRX500FE2 FourTrax Foreman 4x4 ES with EPS
TRX500FM2 FourTrax Foreman 4x4 with EPS
TRX500FM6 FourTrax Foreman Rubicon EPS
TRX500FM7 FourTrax Foreman Rubicon EPS DLX
2015
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FA6 FourTrax Rancher 4x4 Auto DCT IRS EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX500FA6 FourTrax Foreman Rubicon Auto DCT EPS
TRX500FA6D FourTrax Foreman Rubicon Auto DCT EPS D
TRX500FE2 FourTrax Foreman 4x4 ES with EPS
TRX500FM2 FourTrax Foreman 4x4 with EPS
TRX500FM6 FourTrax Foreman Rubicon EPS
TRX500FM6D FourTrax Foreman Rubicon EPS DLX
2014
TRX420FA2 FourTrax Rancher 4x4 Auto DCT with EPS
TRX420FM2 FourTrax Rancher 4x4 with EPS
TRX500FE2 FourTrax Foreman 4x4 ES with EPS
TRX500FM2 FourTrax Foreman 4x4 with EPS
Переглядів: 156
Відео
Troy Bilt Super Bronco 21D 65M1066 Axle Seal Replacement
Переглядів 120Місяць тому
Join me as I replace some seals in this Super Bronco unit. BRAP! RotoTiller Axle Seals (2 Pack) Our Aftermarket Parts Replaces 721-04232 (Seal) (1.000 Shaft & 2.000 Bore) Fits Both Front & Rear Each Machine will take a total of 4 Seals so if you are rebuilding all wheels you will need 2 Kits Fits: Craftsman Huskee Troy Bilt Yard Machines with Transmission Housing 919-04184A
Ford Truck Does a Burnout
Переглядів 409Місяць тому
Ford 6.0L does a burnout at Doochies Bar in St. Martin on 7/13/24 BRAAAAAAAAAAAAAAAAAAAAP! Watch and learn how to burnout like a true redneck! :)
2007-09 Toyota Tundra Headlight Replacement
Переглядів 303 місяці тому
Replacing the Tundra 2007 2008 2009 Toyota Tundra left and right headlights. Also slapping in some mint LEDs. LEDs Ironwall H11. Headlights were $60 LEDs were $20 Cheap stuff and turned out mint.
2007-09 Toyota Tundra Taillight Brake Light Replacement
Переглядів 583 місяці тому
2007 2008 2009 Toyota Tundra Truck Left Right Tail Lamp replacement. $80 for the pair, easy quick and looks mint. Braaaaaaap!
Polaris Sportsman Lights Flickering Intermittent Circuit Breaker
Переглядів 954 місяці тому
This one was weird for sure, but some troubleshooting led me to the problem. Polaris used these circuit breakers in most of their ATVs. 1990s 2000s Magnum Sportsman Ranger Xplorer Xpress Trail Boss 250 325 330 335 400 425 500 600 700 etc. Component Qty. Per UM Description 2434012 1 EA BREAKER-CIRCUIT, 20 AMP-ATV
Polaris Sportsman 335 400 500 Rear Drive Axle Replacement
Переглядів 7277 місяців тому
2002 Polaris Sportsman 400 4x4 rear axle replacement. How to change the CV axles. I used aftermarket replacements that are about $100 for the pair. Pretty simple job and be sure to grease the zerks when the job is done.
Subaru Forester XT Cabin Air Filter Replacement
Переглядів 1177 місяців тому
How to replace, clean, maintain your 2013-2018 Subaru Forester XT Cabin air filter. Subaru recommends cleaning/replacing every 15,000 miles, but really this is more of a personal preference. Another easy thing every owner can do themselves... BRAAAAAP!
Subaru Forester XT Serpentine Belt Replacement
Переглядів 1,1 тис.7 місяців тому
Subaru recommends changing this belt every 90,000 miles. I've seen these belt lasting at 200,000 miles. I have also seen these belts shred at 200,000 miles. Replacing this belt is a simple and straightforward maintenance that anyone can do! OEM PN 23780AA111 Enjoy, Braaaap!!!
Polaris Sportsman 500 Fan Not Working FIX!
Переглядів 1,4 тис.7 місяців тому
Customer stated that the temp light came on and the fan wasn't working. He was plowing snow and working the wheeler hard, which makes sense! In this video I dig into the wiring and trouble shoot the problem! I am test the fan to make sure it's working properly. 1997 1998 Sportsman 500 and much, much more.
Subaru Forester Wheel Bearing Removal
Переглядів 1698 місяців тому
Me and my weird buddy Jim tackle this stubborn Subaru wheel bearing. Overall not a bad job and we got the noisy bearing replaced. All you need is basic tools and a hammer. 2016 Forester XT 108K miles and one wheel bearing bad. :( Tighten the bearing bolts for 45 ft-lb Axle nut 140ft-lb and remember to restake the nut
2010 Polaris Sportsman 550 Rear Wheel Bearing Replacement
Переглядів 3508 місяців тому
Wobbling rear wheels are common if the wheel bearings are shot. Bad bushing on the bearing carriers can also cause the wheel to wiggle. Be sure to properly diagnose the wheel bearing to physically determine if the wheel bearing needs to be removed and replaced. In this video, I show one way how to replace the wheel bearing. I also replace the brake pads while I am in there.
2009-2014 Polaris Sportsman 550 EPS NOT WORKING or INTERMITTENT
Переглядів 2,4 тис.8 місяців тому
Project ATV: 2010 Sportsman 550 EFI EPS. Dash EPS indicator illuminated and the EPS not working. Really comes down the 30amp fuse and the EPS relay. In this video, the connection for the relay was super corroded. It cleaned up well and a new relay fixed the issue. Replacement Relay purchased from Mouser: Mouser #:893-8711ASR112VDC Mfr. #:871-1A-S-R1-12VDC Mfr.:Song Chuan Sportsman XP 850 HO EPS...
Arctic Cat Kitty Cat Snowmobile Riding 2023
Переглядів 1,2 тис.8 місяців тому
2 chicks riding 1976 and 1981 Arctic Cat Kitty Cats ripping around the yard. Braaaaap!
2007-2015 Infiniti G37 Lower Control Arm Spring Support Replacement
Переглядів 6889 місяців тому
Should be the same part for 2007-2015 Infiniti G25 G35 G37 Q40 stuffs. Hope you enjoyed the video braaaaaap!
2002 Polaris Ranger 500 Rear Differential Stripped Axle Spline Rebuild
Переглядів 9619 місяців тому
2002 Polaris Ranger 500 Rear Differential Stripped Axle Spline Rebuild
1999-2002 Polaris Scrambler Xplorer 4x4 Fix Faulty Rev Limiter w/ Diode
Переглядів 2289 місяців тому
1999-2002 Polaris Scrambler Xplorer 4x4 Fix Faulty Rev Limiter w/ Diode
2011-2014 Subaru WRX CEL P0037 P0141 Faulty O2 Sensor
Переглядів 50010 місяців тому
2011-2014 Subaru WRX CEL P0037 P0141 Faulty O2 Sensor
Fall 2023 Turning Leftover Apples into Cider (SO EASY!)
Переглядів 4010 місяців тому
Fall 2023 Turning Leftover Apples into Cider (SO EASY!)
How to Install 3rd Brake Light Flasher Flashing Strobe Mod EASY
Переглядів 55210 місяців тому
How to Install 3rd Brake Light Flasher Flashing Strobe Mod EASY
Nissan 350Z Cold Start Bassani Exhaust
Переглядів 13310 місяців тому
Nissan 350Z Cold Start Bassani Exhaust
2014-2023 TRX 420 500 520 Front Brake Line Hose Replacement
Переглядів 288Рік тому
2014-2023 TRX 420 500 520 Front Brake Line Hose Replacement
My vintage Polaris has a plugged muffler!
Переглядів 176Рік тому
My vintage Polaris has a plugged muffler!
90s Polaris 350L 400 2 Stroke Broken Reed Valve Symptoms Pushing Air Out The Carburetor
Переглядів 4,9 тис.Рік тому
90s Polaris 350L 400 2 Stroke Broken Reed Valve Symptoms Pushing Air Out The Carburetor
Polaris Sportsman 500 Rear Brakes and Wheel Bearing Replacement
Переглядів 3,6 тис.Рік тому
Polaris Sportsman 500 Rear Brakes and Wheel Bearing Replacement
Jones Nancy White Laura Miller Betty
Johnson Mary Robinson George Thompson Steven
Davis Paul Thompson Helen Williams Karen
Thing to keep in mind is the amount of current drawn by the EPS you better have a healthy battery and a good charging system output.
Cambie sellos y ahora tira agua por el lado izquierdo del motor pegado ala banda
I wish I could get my EPS working. Fuse and relay are fine and there is power at the EPS unit, but it won't work. I've checked everything according to the service manual and everything checks, but nothing. If anyone has any advice, I'd appreciate it.
Not only does he make it look easy, he explains it so well that anyone can do it. Rare experience these days, thanks.
Thanks Brap!
Looking forward to the 2026 trip content!
Yeah, unfortunately that's probably all just hype.
No needle and seat removal?
Nah, not unless you need to.
I’ve been working on one of these and I have a really high idle. Cannot slow it down with the mixture screws.
Screw in dipstick to check balance oil?
Yes, either way is probably fine. As long as it is not dry, that's all that really matters. :)
I have having same issue on my 2015 Polaris scrambler! Dealer is saying after flashing ECU the light stayed on and need a new EPS unit which I think is crap. I replaced the 30A Fuse, and mine has a EPS relay in fuse box but manual says its not in fuse box. Where is the location??
Mine was under the plastics on the left side of the headlight pod as you're sitting on the unit. Even removing the plastics, I still had to use long pliers to remove the relay. It's in a terrible location. My relay connections were clean and dry and the relay works, but I still have no EPS.
What a crappy video Oh please don't show us the aftermath of the finished product oh please we don't want to see that we don't want to see where the truck sits with the new coil springs what a bunch of putts
Do your own research on what springs and look you want. This was to show the install brap.
Thanks Saved me some fucking around
I'm just about to this as well, just a question, my shop manual says to oil the lip, and I notice you used grease? No difference? Just curious. THX
Give it the ole hawk tuah if ya want… anything is fine.
Hittade felet på min fågel i dag efter flera dagars felsökning, ny regulator beställd
What store did you get the 3/4-16X3 3 inch long bolt from?
1985 unit
Thank you Brad! This middle-aged lady was able to install both front wiper blades because of this video. In under 2 minutes!!! Great job showing the packages with the part numbers and explaining and demo’ing it all so clearly. 😊🙌
Great hack. Thanks!
to long buddy only have one idler pully
How often do you have to change your tire oil?
question for you, i have owned my 2003 since brand new and mine is having a slight stumble off idle and some slight erratic idling. I was pretty sure this was my issue but when i primed the system it looked perfect, not a drop came out. The bike has 8700 and was babied. The only thing i can think of is i had a battery die out just recently and being i put the battery in backwards....well i put it in forwards, it supposed to go in reverse and crossed the terminal. It did blow the 30amp fuse but now i'm wondering if that is an issue. Everything works fine, the bike runs excellent otherwise into the higher RPMs......just maybe a slight hiccup around 2500 rpm and intermittent weird idle. (not crazy but sometimes fluxuates around 1200-1500. Any thing to check?
Thanks for this, I got my 95' 300 explorer about half apart, just enough to expose the front portion of the starter and the starter isn't even engaged with the gears on the shaft. It also wiggles around, I'm no expert, but I'm guessing that means it's worn out. Anyways, now I have to take off the second half and get her out. There's quite a few steps, I'd have been shaking my head and probably throwing a wrench or 2 had I not seen this, so thanks again!
Thanks for the video. I spent some time figuring out how to replace it so many thanks for saving me time and effort 🙂
Good video other than that
I really wish you would have shown me which way to wind it up
Doesn’t work on the 2022. What a stupid feature
I was unaware of that? You can't just unplug it?
@@BrapStuff it’s electronically controlled latch. If I unplug it, it doesn’t lock but it also doesn’t send the signal to open tailgate.
@@Blacknstraight Oh wow that's ridiculous!
This procedure won't work with 5th gen 2021 1500!
Any other way to disable it on the 5th gens ?
Thanks for the video and I was wondering I have the one you showed, does the belt have a lot of play or is it snug ?
What size and thread pitch bolt for the puller??
In the video description: Primary clutch puller bolt size 3/4-16X3 3 inch long bolt, 3/4" diameter, UNF Fine Thread 16 threads per inch.
Used this for a rebuild in 2024. This video walked me through bringing this old girl back. Ron Ritter sells a rebuild kit and it runs 10/10 now. Thanks!!
I have a 95 300 two stroke air cooled but I can't get a torque wrench in to torque the cylinder nuts any ideas?
Crowfoot or just use a wrench and get it close enough.
How does the axel stay put?? My axel came out? Is there a locking system that keeps it in the diff?
ty great video
I have a question can someone answer? If doing it this way, does the 4 wheel drive system still stay energized regardless if the 4 wheel drive switch is turned on or off? Wouldn't you need to install a cheap on/off toggle switch inbetween?
The button becomes simply becomes the switch. There are many ways to do this...
Maneral palanca velocidades manual de cuatri honda 500 4x4
50% stiffer, yahhhh buddy!🤟🏻
Great video Thanks for recording
$85? Where did you get that? I check can am site and one went for $400
eBay or Amazon should have a cheapo.
Shoulda towed Tim around on the big wheel!
That’s a great idea for some future content.
1:18 "Hey, no swearing." 😇
Yb have to be good :)
How do you reset the system after getting new tires on?
Sway bar removal necesary?
Geez what happened to that thing
Excellent video. Thank you.
I think I lost my seal... My Walker has been spewing oil all over the exhaust manifold and muffler... I stuck my finger in alongside the crank shaft, and it went in a good ways. Didn't feel any kind of seal... Really hope I can do this without yanking the engine.
mine came lose a few days ago you can get it back in just gotta take the exhaust cover off and the bracket under the exhaust and take ur sweet time pushing it back in evenly its a bit of a tricky one forsure as the frame rail is in a shit spot. best of luck to ya!!
Does doing this effect ride height. I’ve got 1.5 inch level in the rear, and want stiffer shocks but the same level look. Thanks for help
Awesome. Thank you!
Dope video bro do you know if a bad regulator can keep bike from starting?
It could be hard to start with bad regulator. That hose he pulled is a vacuum hose . It leaking fuel means its diaphragm is bad letting fuel pass by. The way they work is this.... An engine has high vacuum at idle so the diaphragm opens letting some fuel pass by and return to the tank because the injectors don't need so much fuel at idle. At full throttle there is no vacuum and the diaphragm closes allowing more fuel to the injectors and no fuel returning to the tank. If the regulator isn't working right , you'll have a rich mixture or a lean mixture.