Scotch-Brite Air INTAKE Breather Cleaner SYSTEM On 1976 HARLEY Davidson IRONHEAD Sportster CHOPPER 

I was willing to bet the Carb, was not getting enough fuel, then after seeing the back-plate gasket I was thinking maybe the breaster hole was plug-up someway. Glad you stuck to your game there Air-Cleaners are worth every penny, and so are fuel filters with all the junk gas out there these days. Rubber side down and Riding, thanks for the Show.

I had a loose jet in my carb, which caused the exact problem. Ran great until I hammered the throttle and then it would sputter. Tightened jet and solved my problem.

Hey, had a same problem with EVO sportster, finally problem found was blocked overflow/hose of the float chamber which is also acting as a float chamber breather. If its somewhat blocked the level of gas inside the chamber is never correct when reaches high revs resulting exactly those issues.

If you use the Scotchbrite with soap the inside of the engine will get really clean when it rains 😅

The best part of having drag pipes on my 900 was that break when you let off to shift ...(but I did push it out to the alley before kicking it over in the morning.) My best combination was a Keihin carb,/Hunt magneto/ no battery system (discharge capacitor saves the headlight from blowing.) One twist and first kick to start. Rode it 80's and 90's

I don’t like petcock filters. It’s something you can’t see clogging up. I just use inline filters. Another thing I’d check is the high jet

I think it needs a smaller idol jet. Getting fat when the accelerator pump shoot its load. Try going down a couple three sizes and see if that helps. Maybe drop your needle if it's adjustable

Maybe premature but CHK the slide for black suit around the needle and if it has suction when pushing it up. FYI V-Twin catalog has air cleaner kits for those who use a CV carb an Old bikes. You car run round or the ham can air cover ✌️

Check fuel float level, it may need a little more fuel

Well you know it is wasn't getting enough air for sure now. Sometime it is a trial and error process. Glad she is running better.

The Bad Boy I won is an electrical NIGHTMARE.... BUT I'm trying

I have 5 bikes currently. I have run bendix,cv,s and s, mikuni carbs . I gave up on bendix,mikuni carbs . I RUN CV AND S AND S ONLY!!! AND I REWORK THEM TOO FIT THE BIKE !!! NOW I HAVE VERY LITTLE ISSUES WITH MY CARBS. LEARN EM KNOW EM !!!

You should be able to hold your air filter up to the light and see through it. But your issue to me sounds like a carb cleaning and adjustment.

I did the opposite i removed the filter from my tank and left the in line filter it worked for me

Hey Corey Red rider from bc has brand new video out , specifically on intake filters, right down to the math, good to see you well tramp👍🏻👍🏻👍🏻

Glad you are getting it figured out. Always something. 👍

Its like adult Saturday Morning Cartoons! Wheres my Cheerios!

Sounds like the vacuum diaphragm is warped

Good job keep tinkering you will get it running the way you like, great content! safe travels

Odds are I’m going to enjoy this because I’m part Scottish.

Trouble is youve leaned the mixture, across the whole rev range. Id go back to a better air filter and try an accelerator pump adjustment. Might be over fuelling when you crack the throttle.

Those glass fuel filters are notoriously bad to leak. To quote Derek Bieri" they've caused more fires than ex-wives"

Corey, sometimes it takes a lot of effort to get things to work right. So it was fun to see this one come out right no matter what filtering material you used. Thanks for Sharing! P.S. Going to go out a buy a case of Scotch Bright tomorrow! 🙃🙂

🤔this one guy got mad😈 at another guy🤡 once and put a single piece of toilet paper🧻 in his tank🏍 and it was doing the same thing...🤬

red rider just did a vid on air cleaner volume, should check it out really helpful

Patience is one thing I have None of

check rubber diaphram in top of carb when they rip or fail they cause same symptoms

Sorry to disagree, since scotch-brite is an abrasive pad and I'd argue its worse than nothing. The little fibers of the abrasive pad would be worse than any dirt that would be flying into the carb and into the engine. I can appreciate the out-of-the-box thinking, but man just run an open carb with a velocity stack or get a cheap high flow filter. Saving a few bucks will cost you a lot more, unless you like to rebuild engines for fun. TC bros has nice louvered air cleaner kit for like $60 bucks.

You know more than I do for sure about these engines. My troubleshooting mind leads to something wrong with slide,needle, main jet. Accelerator pump. Float level good? Timing not advancing? Spark plug gap? Weak spark?Good content bro

Adjust the excellerater pump to put more gas in when U twist the throttle.

Me: Oh yeah that looks safe. Tramp: I don’t know I’m not an engineer 😂😂

If it has point and condenser look at that run with the choke on then off and you could run the gas tank cockpit pick on reserve

My bike was doing that I got a Sportster 883 it's a 90 model I put spark plugs and I've been running nothing but 93 Shell but my bike doesn't do it anymore and my fuel filter and everything is inline inline like yours was I even put a brand new petcock from drag specialties that had a filter built into it also then I've got clear fuel line and a see-through filter but my bike quit doing that but it would run just like yours for a minute then it would be okay

So I'm guessing you haven't scrubbed a skillet with one of those things if you're letting it anywhere near a motorcycle... Everything is made so cheap these days, it'll probably disintegrate and come out the exhaust...

Awesome video, Saddle Tramp. The Ironhead sounded really good (at the end).

m telling ya man get a HRS40 for your sporty and a 42 for your big twins that need carbs. Buy a aem air/fuel meter weld a O2 bung in the front pipe 18" from the engine. and rear your air fuel by the gauge. Stsrt with wide open throttle (main jet) then cruise (needle highth) Lastly off idel and low speed (mixture screw and pilot jet) You want your idle screw to be turned out about 2 to 2.5 turns If it is under 2 go one jet smaller over 3 go one piolet jet larger. Do the rest by air fuel reading. I've probably tuned 35 or more bikes this way over the last 20 years with no complaints as well as my onw street and race bikes with great results

Hey man, why dont you call tatro when your having issues ....you know he would be glad to help. Ive talked to himna couple times on the phone here from PA. Very cool guy, willing to help and give advice.

I ran an S&S Super E with a stock rebuild a set of upswept Paugho Pipes... half a kick and it started, would run I 10 and all around SanBerDoo...grab a handful and off I went.

Check the flyweights behind the points...could be weak or damaged springs...

Good fix man!

Nice job works wel old skool rules,its always nice to figger it out yourself .

Just get an S&S Super E and get it over with.

Scotch bright pads are embedded with abrasives. Good luck.

Yeah, you have the patience of Job!! Thanks for the video. Great to see someone actually work on a bike and make it run.

Well there you go. Backyard problem solving at its best! If it works I’d go with it.

literally the air cleaner I run on my CV 1980 ironhead good looking and the CV makes the old iron come to life.

remove fuel screen from pitcock and try it for a short ride, no fuel filter. "IF" cures problem reinstall inline fuel filter. If still don't cure problem you know for sure to look some place else. safe ridin rubber down

YOU are not too brite! There's abrasives embedded into scotch-brite pads Homie!

Don't Tell Harley-Davidson They will carry them and sell them for "Harley-Davidson Branded scotch -Brite and charge $ 50.00

I run a Bendix with a Harper charger which forces more air I think, but it works great..

I am not surpised it works...I have been using the stuff for gas trimer filters for ages...

Yeah I always thought those filters starve the carburetor. And the kind that looks like a beehive holes

I have found hogshair is good I used it for commercial refrigeration filters on condenser...s

so obviously if the scotch bright works, a helping of Mr Clean and some Charmin will really do the trick 😂 what do i kno! you're contraptions and solutions continue to amaze me! like magic! Dare i say.........Houdini perhaps !

l put a none S&S tear drop air filter on my bike... drowned it in fuel.... so l got a cut open hypa air fiter runs heaps better now.. cheers

Sounds to me like your coil is breaking down at cruising rpms when you put it under a load. If it is the coil, it'll run ok at lower rpms and at higher rpms if there's enough torque due to gearing to get it past the break down area but it'll miss, spit, pop and crack if you're in a taller gear at cruising speed and holding the throttle wide open. Good luck brother!

Sounds like a possible ignition issue to me??? Are you running points & condenser? flyweight/spring spark advance?(tiny springs get weak/flyweights get worn, stick from dirt or dried grease )...Coil wires?(thin wires & plug wires + connectors???) Coil itself ? (starts to hesitate when coil gets hot...???) Just grasping at straws... > You mentioned it been a while since adjusting pushrods...??? Usually they will get noisy if they're excessively out of adjustment ...Used to check them about every week or so WAY back when I was riding my XLH daily...Also recall years ago a friend's early '80's XL(IIRC) I had worked on...chased around for a couple hours troubleshooting a rough running condition at certain RPMs/gear & turned out to be a bad condenser ...Figured it out when running engine with ignition cover off & noticed excessive arcing = points eventually pit (IIRC ...at the time I was probably thinking early 1980's XL = an electronic ignition but it had points...???) ...Just making a few hopefully helpful suggestions to test, check or trial & error...

No point in trying to chase this problem until you are 100% sure the seals on the engine side of the carb are sorted.Hope you get it sorted.

Always great content! Glad you got it running🤙✌

Its your air fuel mixture mine did same also check donut to intake

pushrod quad seals for those leaky rocker shaft end caps 🐱

Here is a video Red Rider from Canada did on air cleaner surface area: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-5xV0yKIwgPQ.html

That is such a cool bike. I love the paint scheme on the tank. Did you ever check the fuel filter inside the tank? Your neighbours must think you’re a motorcycle maniac ripping up and down the streets all the time lol !!!

I had an old 1972 AMF vintage bikes, stretched, raked and a hardtail. I finally had it bored to 1200 and all the interals upgraded by someone that knew what they were doing. The engine as it came from the factory was a mess.

Hey brother, always enjoy your content, vibe, and taste in tunes. I'm not trying to tell you what to do. But I definitely recommend swapping the fuel hose for braided steel. Especially since it's so close to the motor. Heat soak can affect your performance too. I'm no certified harley tech, but from my ears it sounds like the timing may be slightly off at a higher rpm. It could be a cam is set at the wrong time. If you haven't already eliminated them off the list. Peace and love

Its funny when I saw the scotch bright and I thought I would put window screen to keep it sucking into the carb and apparently great minds think alike.

did the fella; say if he tried with the needle dropped a notch to see if that made a difference?.

Points condenser. I've owned 2 of these bikes. AND a lot of the times the new condensers will not work right even new out of the box. Buy 3. Or try electronic points

Been a minute sense I completely watched your video but this content was like the old Tramp or maybe the first Tramp videos anyway great content and Thanks for your work.

Wander if thats why you look at old chopper builds from the 60's an 70's, most don't have air filters

I always thought you were supposed to check valve clearance with bike stone cold, not warmed up?

Sometimes it’s fuel venting. If you don’t have a vented gas cap you can drill a small hole in yours and it will help when accelerating under load.

I just put new jet and tube in mine, had to go with a more open air filter to make it not choke out. Love the video’s, keep up the good work!

👋👋👋🇺🇸🇺🇸🇺🇸

Making progress some times problem solving is half the fun

Trial by fire. It works !

When it won't take the throttle it's fat

Plug wires to the coil my 72 looked like battery cables green and ugly

I am getting ready to get a 77 Sportser back on the road after it has sat in storage for over 10 years. First I'm going to put the gears back into the transmission, then change all the fluids. What all would you suggest I do? Nothing was done before it was stored in garage for 11 years, but its paid for, so I'd like to get it road ready before spring/summer. Would I be better off taking it to an actual motorcycle mechanic?

Nice troubleshooting it has been a while since I watched one of your videos, and I'm glad to see you are still learning as you go.

Id recommend K&N filter oil on that Scotchbrite -- and watch the rain! Lol I did this too on my Ironhead. Love the sound ! Ride safe in the LORD'S grace bro.

You do know it is an ABRASIVE right? And chunks of abrasive material can get sucked into your engine? 😬

Great video man. Glad you're back.

I run the same style cleaner on my 79. I went to the hardware store and got the high class Scotch-brite filter, been like that for years. CV carb are great they just need a proper rebuild. You need Carburetor Bob! JUST the SCOTCH-BRITE

Good you got it going better! Good video!

have you checked to see if it is vapor locking when you give it full throttle? loosen the gas cap a bit

If you have some CV parts carbs in your boneyard, you could try to clip off an inch or two of your vacuum slide spring to open the slide faster under load. They sell weaker springs, or shorter springs to accomplish the same thing. With the more restrictive air cleaners, there may be a vacuum imbalance and the slide is not opening quick enough. Or you might have a pinhole in the slide vacuum diaphram. I thought that thought when you mentioned gas splashing out of the throat of the carb, which might have the accelerator pumpshot hitting the slide when it's down. Also, maybe look in the carb with the air cleaner off and see where the pumpshot goes when you twist the throttle. You can tweek the squirter to have it shoot at the bevel on the bottom of the slide.it could have loosened up and pointing in a bad direction. That's a quick, free test. It's good that you got it going better, but if it ran with the air cleaner before, then something happened to affect the mixture. But you know that. Just throwing some crap out there against the wall and seeing what sticks! Take care, Corey.

I used to race an old CZ motocross bike. It ran fantastic when it was in the workshop but when I came to race it it would do just what your bike did. They had crap Russian carbs that leaked so I replaced it with a Bing carb. Was that the problem no. It has points and at higher RPM the condenser was not pulling out power. A part that cost nothing and you never think about.

I’ve used pantyhose and a sock in a pinch.

This is great content, you guys posting on your channels is a good resource with some real golden nuggets that might otherwise remain a mystery. I watched one from Scotty a little while back covering intake manifold air leaks and how initially, the symptoms aren't obvious, but ultimately how important the cause is to deal with.. ..and of course, once you know.. Another was a recent Shadetree FXR double, which featured a gentleman named Joe, who was certainly, all round someone we'd be blessed to know, but maybe especially, he came across as a carb magician.

Yeah nah

That’s fantastic that it worked Tramp

🖐😎

Glad you figured out something that will work for you. Take care ...Ride Safe!

I've got a tank like that but orange in color!

Would love to see the set up of the CV carb to the iron head . Love Keihin carb but butter fly parts are hard to come by . Just a thought for a video and no cost of parts .

check yourdiafram in your carb

I use a thick wool sock and zip ties

If its CV Carb it's accelerator pump. Clean holes and replace

My suggestion would be to just put that Bendix carburetor back on there