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Discussion Starter #1
Okay I am going to start off by admitting that I am brand new to this and am not afraid to admit it or ask for help. This is the first bike I have owned since owning a brand new crotch rocket back in '96. My 750 is a 1995.

I bought this bike very cheap and knew that it wasn't running when I bought it. The previous owner had bought it but never really done anything with it though he said it was running when he had bought it 2 years prior. The tank was rusted almost completely out and beyond repair. I salvaged the petcock and cleaned that up to seemingly perfect order. I just bought a used tank with a tiny bit of surface rust but mainly just a dust cover then actual rust. I replaced the plugs, changed the oil, and then installed the tank.

I do not have an owners manual so this is the part where I am stuck. I am not sure if there is a choke or something like that to assist in getting the fuel into the engine. I am not entirely sure which was is fuel, reserve, and off on the petcock. The engine attempts to start but will not actually catch and I am not sure if fuel is even getting to the engine or not. Any help would be greatly appreciated. I would like to know if there is a choke or primer for the engine and if there is anything that I obviously overlooked. When attempting to start it I have it in neutral and am holding the the clutch in. It has been a long time so maybe that is something that I am doing wrong or overlooking.

Also, does anyone possibly know somewhere I can maybe download the owner manual by chance? I already have the service manual but that doesn't go over the little obvious points like the different setting on the petcock and how to properly start the bike. I hope I am not coming off too unknowing. Thanks!!
 

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Discussion Starter #3 (Edited)
http://tocmanufacturing.com/Files ...nd Parts.pdf

thats link to manual. maybe you connected wrong lines on tank. you want the arrow pointing to on on the petcock. choke is on left hand grip. pull it towards you to set choke.

I will check the choke out. I will also double check the lines to make sure they are properly connected. I already have the service manual, I was hoping that maybe the owners manual might be online somewhere as well. Is there a way to tell if gas is getting into the engine or not? I really appreciate the help.
 

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guess 1st you need to check that its getting to the carbs.
 

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The positions on the petcock is as follows:

Lever down : On
Lever forward: Reserve
Lever back: Off

It should be printed on the petcock. Might be hard to see if it was in bad shape.
 

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The choke is on the Left grip next to the turn signal switch.
 

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I will check the choke out. I will also double check the lines to make sure they are properly connected. I already have the service manual, I was hoping that maybe the owners manual might be online somewhere as well. Is there a way to tell if gas is getting into the engine or not? I really appreciate the help.
Kirk, you can try draining the float bowls on your carbs - that'll let you know if any fuel made it outta the tank or not (if you turn the screw and nothing comes out, then answer is "no"). Just an FYI on the petcock hookup - the center lead out of the petcock is your vacuum lead, and should go to your front cyl vacuum port. The two side leads are for your fuel, and they can go to either carb. Make sure those are on good and snug, esp the vacuum line.
 

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Discussion Starter #8
Okay I am stuck now, seems maybe flooded or not getting enough gas or maybe just because the bike has been sitting for so long. I got it to turn over and finally catch and it idled but struggled like it was was getting enough gas or maybe oxygen. It rand for about 10 seconds and died. It wouldn't catch so I let it sit for about 2 minutes and it started but died almost immediately. Any suggestions? I am too excited to be down...I have finally heard what it sounds like. I am sure that it can't be too much more to get it going sem-decent enough to play with the idle and what not.
 

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You need to rebuild those carbs. I bet they are loaded with crap. You could try the easy way first. Get yourself a can of Sea Foam, and dump half of it in the tank. Drain the carb bowls until your sure your getting the gas/seafoam mix. Let it sit for a day then try to start it. Thats the cheapest thing that you can do first. Did you replace the spark plugs yet?
 

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Discussion Starter #10
Ok this is weird and frustrating. I let it sit for about 10 minutes and then went back out to try it again. It wouldn't start and I noticed a puddle of gas dripping on the left side of the bike (if you are sitting on the bike it would be your left side) by the center stand. I am guessing a bad hose or something but the new issues is that I just had my battery recharged and now it is dead again. How can I trouble shoot a problem with the battery losing its charge? Any ideas on a hose that would be near the center stand? I didn't see anything obvious and now that the battery is dead I cannot try again to see where the gas is leaking from.
 

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Discussion Starter #11 (Edited)
You need to rebuild those carbs. I bet they are loaded with crap. You could try the easy way first. Get yourself a can of Sea Foam, and dump half of it in the tank. Drain the carb bowls until your sure your getting the gas/seafoam mix. Let it sit for a day then try to start it. Thats the cheapest thing that you can do first. Did you replace the spark plugs yet?

Yes I changed the plugs and oil already but I think I have a bad fuel line somewhere but I cannot keep my battery charged to find where and it isn't anything visible to me so far. Could it be leaking from the carbs or am I on the right track with a fuel line?

Edit: Okay I don't know if this is where the leak is coming from or just one maybe more but the hose that comes from the vacumn line? of the petcock (the one that is in the middle and goes down into the carb) was wet, whenh I pulled that line off I had gas coming out in a fairly decent amount. Is that supposed to happen? How tough is it to rebuild the carbs?
 

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PIA if it still has the ears. Worst is getting them back in. Rebuilding the carbs is not too bad. Actual you just clean them as there is no rebuild kits, you have to buy individual parts that you need. Sounds like your petcock is bad. Plug the port on the petcock and the carb vacuum line and start her up. Should run till carbs run dry. Gas in the vacuum line is flooding engine. eBay has petcock kits-look for vn700 they are the same, about $20.00 plus shipping. You could buy an adapter plate and an after market petcock from Pingle. You could do as I have done and pull the guts out of your petcock and plug the vacuum port and the vacuum line from the carbs.

I'm in Daytona maybe this weekend I could take a ride your way and help out?
bumpy
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Discussion Starter #13
PIA if it still has the ears. Worst is getting them back in. Rebuilding the carbs is not too bad. Actual you just clean them as there is no rebuild kits, you have to buy individual parts that you need. Sounds like your petcock is bad. Plug the port on the petcock and the carb vacuum line and start her up. Should run till carbs run dry. Gas in the vacuum line is flooding engine. eBay has petcock kits-look for vn700 they are the same, about $20.00 plus shipping. You could buy an adapter plate and an after market petcock from Pingle. You could do as I have done and pull the guts out of your petcock and plug the vacuum port and the vacuum line from the carbs.

I'm in Daytona maybe this weekend I could take a ride your way and help out?
bumpy
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I work this weekend but I am off the following weekend and if you are still up for the ride I would love the assistance. I am a little over an hour from Atlantic Ave Daytona Shores. I live off of US HWY 441 so its a nice easy ride. I have a nice grill and am sure I can talk the wife into a little cook-out bike work Saturday or Sunday.

What is the best way to plug the ports to run the carbs dry?
 

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I believe that your petcock is like mine. Towards the back is the prime position. Straight down is run and froward is reserve. If you leave it in the back or prime position the fuel will flow into the carbs constantly even when the bike is not running. If your floats are stuck then the fuel can run into the engine and out the breather on the front cylinder. If this is the problem your fuel will be diluted with fuel and it needs to be changed. Just a guess.
 

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If this is the problem your fuel will be diluted with fuel and it needs to be changed. Just a guess.
I do think you mean that your oil will be deluted with fuel and need to be changed.
 

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I'm going to make a guess that the fuel is not getting into your cards properly. When the engine runs for 10 seconds it uses up what is in the carbs or the fuel lines and then stops. If you leave it a while and it will restart this si because the carbs have had time to refill, but not at a fast enough rate to sustain a running engine. When a bike stand the fuel lines can dry out and leave a residue which blocks them. Clean the carbs and the fuel lines. Starting the bike is quite heavy on the battery which is not being re-charged, so I also guess that you have simply drained it and you should re-charge it. If it is an old battery you may find it doen't hold a charge very well and it might be worth investing in a trickle charger to keep it topped up. The charging system is vulnerable to failure on these bikes, but I would get the engine running reliably first and sort the charging system out next. Good luck
Simon
 

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http://www.vn750.com/photopost/showphoto.php?photo=677&cat=548

Here's your carbs. With labels. Unfortunately in real life there's an engine mucking things up, but that's okay for draining the float bowls. Look at the pic and towards the lower center of the image you'll see a label "float bowl drain screw and drain." Something like that - the drain screw is a hex bolt (3mm, I think) and the drain is kind of a nipple behind the screw. Put a piece of clear plastic tubing on the nipple, and place the other end in a clear container (just so you can see what kinda junk may be hanging out in your float bowls). Get your hex wrench and turn the drain screw CCW until gas starts to flow out of the bowl through your tubing. It won't be a lot - seems like it at first, but it will stop. Tighten the drain screw back down, remove the tubing and head to the other side of your engine to do the other float bowl. Looks exactly the same and the procedure is the same. Again, don't forget to tighten down the hex bolt!!

Hope that helps - if you need pics of the near-actual proc, holler. My carbs are still floating around the garage and I can rig up a authentic reproduction of the draining process and take pictures. :beerchug:
 

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Thanks for the guidance.. I think I have located the drain screw and the nipple on either side. Whith everything mounted when looking from the sides the screw stares at you and the nipples are pointed down. It was easier to locate on the left, and then I just went to the right side looking for the same setup.

I will try to drain them out today evening and see what comes out. Now to tighten them, is there a set number of turn ins or should I just turn untill it is fully shut.
 
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