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Since you say clean the carbs, I am hoping you set the idle screws and also balanced the carbs after the cleaning. If not I would do that also. Yes it could be a float level off but if that was the case I wouldnt think the cylinder would fire with the enrichment activated as I believe it gets the fuel from the float bowl. When you rev up the engine, does it seem to be firing then on all 4 cylinders? You could also pull off the air cleaner lid and observe the 4 plungers and see if they are all moving at idle or at a slight rev up. The bike wont run proper above 3K rpm with the lid off so it wont work to leave it off to ride it. Good luck and lets us know how it goes.. Rick F.

The reason putting the air filter lid back on makes a difference is that they are constant velocity carbs and need the vacuum created by the air filter box to make the diaphragms work properly. They will idle a bit but wont rev up must past 3K without having issues with the lid off. Also there isnt a gasket for the carb boot for its seating surface for the head. It uses an O-ring for that. What you can look for is as mentioned before, make sure the carbs are seated properly in the boots and the clamps are in the correct position and tight. Also check and make sure that the vacuum caps on the vacuum ports for carbs 1, 3 & 4 are tight and not cracked and leaking air. Carb #2 has a hose connected to it that run up the the ignition box for vacuum advance. If the bike is idling at 3K, there is a knob on the left side of the bike, under the left side carb rack that adjust the idle speed. Also check the 1st Gen Forum Library and under manuals, you can download a copy of the service manual for your bike. Hope this helps. Rick F.

The sending unit is located in the tank under the seat. It has a wire running to a spade connection I believe. If you have the service manual, check page 8-29 in the APPX section. This diagram shows cable and wire routing and you can see the fuel level sending unit connection between the frame rail just above the cross member. Also check page 7-67 as they talk about testing the sending unit on that page and show its location. Good luck. Rick F.

I would be concerned that the air cleaner box is off the carbs and who know for how long. This brings into question as to what condition the motor is in. So NO I wouldnt give them $500 for it. Maybe $100 but dont expect it to run and you might be able to get your money back out of it if you parted it out.. I personally would look for one in running condition and pay a little more for it. Rick F.

I scanned some of the instruction sheets I have for different Venture Line accessories for the 1st Gen bike so incase other need the information it might help them out.

Earl, aka Skydoc_17 has a replacement fuse box he sells or at least did. Check out this link. https://www.venturerider.org/forum/topic/63155-first-gen-vr-1983-to-1993-fuse-box-upgrade-kit/#comment-800670 Hope this helps you out. Rick F

I am not sure what the number would be but Yamaha list this as this.. Bulb (12V-3W) with part number 1NL-83517-00-00 and not available anymore. I would take one out and take it to somewhere to compare it and see if you can find one that works. I have never had to replace one yet so havent taken the time to see if I can find one. The service manual doesnt break it down any better either so just take one and compare to find the correct bulb is your best bet. Good luck. Rick F.

The only other place I can think of is ebay but that isnt going to be any quicker than going to Sport Wheel and getting one. I am not sure if there is any radiator repair shops around anymore that would work on it for you but that might be your best bet if you can find one.. Rick F.

I would suggest you download the service manual for your 1983 Venture from here.. https://www.venturerider.org/manuals/1983-1985 Yamaha Venture Service Manual.pdf This will give you the information you need on bleeding the brakes or any other service you might need to do to your bike. Under the rubber flap is a bleed valve for the hydraulic clutch. There are a few grease points on your 83 Venture but that isnt one of them. Rick F.

that is the wire from the stator to the voltage regulator. Possible there was some corrosion on the connectors that increased the resistance and that caused the current to get too night and melt the wire. Most likely you will need to replace the wire and connectors. Rick F.

When you say the smaller of the two holes, are you aware there are 3 holes between the engine and the throttle blade. The smallest of the holes is the idle Pilot outlet hole for the idle circuit. This hole is passing a fuel/air mixture and if the black stuff is coming out of there, it could be a bad o-ring that is used in the pilot screw set. The other 2 holes appear to be air holes for vacuum the coasting enrichment valve assemble and piston valve/diaphragms. You might have to remove the pilot screw and see what shape the o-rings are in. Be aware there is a spring, washer and o-ring in there and they can be hard to remove. You might need to stick a small stiff wire in there to work them all out and there are replacements available for a number of sources. Hope this helps. Rick F.

If you notice the parts diagram only show 2 carb holder and 2 air box connectors. I can see the confusion as they show the carb holder like it is under carb #1 but if you look the vacuum port is facing the wrong way for #1 but the correct way for #2. I can even see a bit of a line that they use to show where the part connects. Does it make a difference, most likely not as when you sync the carbs the hose isnt connected to anything at that point. You still will need to sync carb 1 to 2 then sync 3 to 4 and then sync 4 to 2 to get them balanced. Engine should be pulling vacuum equally from all the ports once that is completed. They key is to make sure you have part #11, nozzle, in the vacuum line. This helps to smooth out the pulses that are being sent to the pressure sensor to determine the advance that the ignition is using at any given time. Hope this helps. Rick F.

I would go with the Chevron Techron + as I have used that in the past with good results. Rick F

I have a Nolan N104 modular helmet. I prefer a modular as I wear glasses and I find it easier to get the helmet on and off and adjust the glasses as needed. I usually wear it without the face shield but carry it with me in case I run into rain and need to put it on. Rick F.

If you refer to the factory XVZ13 service manual on Page 2-13 in the top picture it points out that the vacuum hose is connected to carb vacuum port on the boot for carb #2, the left front. And the left rear, #1 carb is showing a plug on its vacuum port. And if you read the sync process in the manual on the bottom of the page, it shows that carb 2 is what you sync the others to. Rick F.

Actually the vacuum hose goes from #2 carb boot to the pressure sensor. Also the #2 carb has no adjustment for it as it is the base line and the other carbs are adjusted to it when syncing the carbs. If you reference the service manual for syncing the carbs it even shows the hose going from carb #2 to the pressure sensor. Rick F.

Progressive did make a rear spring to replace the stock Yamaha one but retained the factory shock. I dont know of any one that made a rear replacement shock and getting one for a bike that is almost 30 years old would be tough. You can find used Yamaha shocks on ebay and that might be the way to go if your shock is bad. Rick F.

I checked the service manual for the 86-93 Ventures and it outlines how and where to do it starting on page 2-14 under Periodic Inspections and Adjustments, chapter 2. The different throttle cables have different places to adjust them at depending on which one is loose. Since you just replaced the grips on the bike, I would double check the cables at the grip and make sure they are seated correctly in the housing and that there is a bit of free play in the throttle. It is possible that a cable slipped and isnt fully seated in the attachment to the carbs, throttle grip, or cruise control actuator and is pulling the throttle blades open in the carbs. Does the grip seems harder to rotate then before the new grips installed? Wish I could be more help on this but this one is hard to say without seeing it. Good luck Rick F.

Here is the factory Yamaha part with a new slider and diaphragm. It is #9 on the parts diagram.https://www.partshark.com/oemparts/a/yam/5107f835f870022108d6576a/carburetor-non-california-model Rick F.

I check my oil cold since I usually do it before I ride. I also check it while the bike is on the center stand as that keeps it up right. Also another way to drain off some of the oil is to remove the oil filter housing on the front of the engine. It will drain some of the oil and if it drains too much you can just add some back in. I am not sure how much you will get out with a turkey baster as the oil fill is by the clutch and transmission and then run down to the sump. Good luck. Rick F.

They are only used when you open the float bowl drains and direct the fuel to the right and left side of the bike so you can catch the drain fuel into a container instead of having it go all over the engine. Your call if you want to replace them but they can be a pain to get to with the carbs on the bike as they are in the middle of the carb bank. Good catch, I hadnt thought about the intake boot being loose and causing the leak. Replacement are available if you think you need to replace them. Check out https://www.siriusconinc.com/pro-detail.php?pid=&product_id=122177 but they are showing out of stock.. imagine that.. Rick F.

Are you talking about the vacuum ports on the intake runners here? The only connection I am aware, hooks up to the vacuum port on the #2 intake runner for the front carb on the left side of the bike as you sit on it. The other 3 ports should have vacuum caps and clamps on them and really are only used with balancing the carbs. The vacuum line goes from that port up to the pressure sensor that is used for the ignition advance on the bike. It could be possible that hose has a leak in it and might be causing the poor performance and MPG. Rick F.

Seafoam is my go to for all my small engines. I even mix it with the gas when I fill up my gas cans, and I always store my engines with Seafoam in the tanks and have no issues with startup at the beginning of the seasons. And yes I use it in my Venture all the time and store it with Seafoam and none ethanol gas in the tank. Seafoam is great for keeping the gas fresh also. Not sure how much you but in the tank but on your next fill up I would dump half the can in and go drive it like you stole it. It does help to clean up the carbs when it can get thru the passages to begin with. Rick F.

You best bet is just to keep monitoring Ebay and see if one shows up as they do from time to time. Pinwall Cycle out of Ohio seems to have some from time to time and they sell on ebay. Good luck Rick F.

First place I would check is the carbs, starting with the diaphragms and checking for holes in them. They will wear and developed pin holes in them that effect the performance of the bike. There are replacement available for a number of source, but dont buy this ones from China that are on ebay cheap. Here one source that has them available. https://www.siriusconinc.com/pro-detail.php?pid=&product_id=1794 Another thing to try on the carbs is called shotgunning them with carb cleaner. Check the tech library or do a search on it in the internet and you will find a procedure on how to do that. The Vmax guys come up with it I believe and it does seem to help out with carbs that have some dirt in them. Also if they are okay or need replacing, you need to also sync the carbs and see if that helps. Most likely it is off some but shouldnt effect the bike like you are describing. I would check plug wires and spark plug cabs and replace or upgrade them if needed, and yes the spark plugs also. Becareful as there is a small o-ring that holds the sparkplug wire in the coil when you remove the wire, as you dont want to loose that. You may also need to get the valves clearances set properly if that hasnt been done or if you are not sure when the were last done. There is a kit available from one of the members here and all he request is that you buy new valve cover gaskets from him. I have an 89 and I usually average between 35 to 43 mpg depending on my wrist action and have no problem going up to redline quickly. Hope this helps. Rick F.