Why did I get this bike? '94 VN500 build - Page 3

nemisis714 · 07-10-2012, 09:57 PM

Originally Posted by RedKat600

Carb bowls are full of crap and/or still dirty. It's running lean. Did you vacuum sync them? I see you didn't uncover the A/F mixture screws. If you didn't pull those and clean the carbs, the carbs ain't clean.

Just uncovered the A/F screws to clean those out (I was an idiot the first time and didn't bother drilling the plug out) only to find out that the left side was all the way screwed in... while the right side was about 2 turns out... whoever last screwed with the A/F screws really screwed up

. once I double check the bowls, I will re-install them on the bike and see if it will actually run.

Thanks RedKat600!

nsrg500 · 07-10-2012, 10:33 PM

Good call RedKat600.

nemisis714 · 07-10-2012, 10:36 PM

Originally Posted by nsrg500

Good call RedKat600.

It's a good thing people like him are on here to give beginners (like me in this case) advice like that. I probably wouldn't have caught that without him mentioning the A/F screw.

nsrg500 · 07-11-2012, 05:06 AM

I would have thought those caps had been removed a long time ago. I've never put them back once out. Having them at completely different setting is of course really mess things up.
In my old FZR. I found one air/fuel screw had it's needle broke off. It was stepped down to a tinny little small itty bitty needle and the tip was gone.

It idled so bad I thought the motor was done. The cam chain was slapping the cases inside. Horrible sound. Typical for that bike.
New needle, carb sync and all was good with the world.........well maybe that's a stretch, but at least it run good and was quiet.

With all the crap in that tank and what not. You may still have to clean the carbs one or two more times. But it should only be a light cleaning. Sometime crud can still up to those little pilot jets.

In the past I'd get about two tanks of fuel run through and they start to run kind a crappy again.
That's about enough fuel to flush things out/into the carbs again. I'd go over it one more time. After that it's normally solid.

I've done my fair share of working on old crappies or someone else's old crappy bike.
Always good fun and a chance to learn something new or use what you know to bring them back from the junk pile death row.

hartattack · 07-23-2012, 06:41 AM

Update?

nemisis714 · 07-23-2012, 06:53 AM

Still fiddling with the carbs.... going to take them off again and double check the nothing is clogged

hartattack · 07-23-2012, 06:58 AM

Ok. I'll be waiting

nemisis714 · 10-09-2012, 08:05 PM

My god I am a lazy bum!
I let the bike sit this whole time without touching it because I never had the time.... well, when I did have the time, I just didn't want to do it. So now, I got back to it tonight by pulling the carbs off and taking them apart... again. Not surprisingly, because of the bad job with the tank cleaning, the carbs had really sticky gunk in them so I pulled EVERYTHING off the carbs and they are now sitting in Berrymans chem dip for a while to get everything off again. I also noted as I took everything off that one of the jets broke as it came out and the right carb was missing an O-ring that goes with the pilot jet.

Lesson learned: Don't be a stupid lazy bum that wants to take a shortcut in cleaning parts on a bike.

So now I have the carbs taken apart on the desk in my room with parts going in and out of the ultrasonic cleaner with simple green in it. Hopefully I am doing it right this time.

nemisis714 · 10-19-2012, 10:18 PM

Ok, carbs are all back together and on the bike. Good mews is they are clean for real this time. Ok, now for the root of the problem... the gas tank. I have taken MEK substitute to the tank to get the inside clean and it seemsti have gotten everything out, the only problem is that it kills paint without prejudice. Now there are a few small spots on the outside that got splashed a little bit with MEK.

Here is the container that had the contents of the tank in it.

as you can see, this is the reason the carbs got gummed up. By hitting the tank with MEK, I hope that all that will come out already has. Next step is to see about putting the tank back on and flushing the coolant.

Tomorrow will also see another test of whether or not it runs properly.

ZXWUT? · 10-19-2012, 10:32 PM

Woohoo!
Posted via PNW Riders Mobile

nemisis714 · 10-20-2012, 12:09 PM

Ok, battery is back in, tank is back on with new fuel in it... the only problem is that it isn't firing up... all it does is turn over. I can tell some fuel is in there because when I give it a little throttle, it acts like it is harder to turn over and give a heartier thump as it turns over.

Do you guys have any ideas?

NoMornings · 10-20-2012, 12:34 PM

Idle screws set correctly? Spark plug wires back on the correct plug? Kill switch?

And - if the carb float bowls have drain screws - open them and make sure there's fuel in the bowl.

Pvster · 10-20-2012, 12:45 PM

Originally Posted by NoMornings

And - if the carb float bowls have drain screws - open them and make sure there's fuel in the bowl.

This. You gotta get the carbs full of fuel first. Does it have a fuel pump? If so, check to see if the fuel pump only runs when the engine's running or if it runs when the engine's turning over. If it runs only when engine's running, make a jumper wire and jump the fuel pump to make it run and fill up the carb float bowls.

Also, holy crap the fuel you got out of the tank!

Any idea how old that fuel was?


07-10-2012, 10:33 PM	#42
nsrg500 Shredder Joined: May 2011 From: Everett. WA I Ride: GS1150 Rat bike, NSR(G)500cc two stroke,CBR 900rr	Good call RedKat600. __________________ Follow PNW Riders on Facebook and Twitter


07-11-2012, 05:06 AM	#44
nsrg500 Shredder Joined: May 2011 From: Everett. WA I Ride: GS1150 Rat bike, NSR(G)500cc two stroke,CBR 900rr	I would have thought those caps had been removed a long time ago. I've never put them back once out. Having them at completely different setting is of course really mess things up. In my old FZR. I found one air/fuel screw had it's needle broke off. It was stepped down to a tinny little small itty bitty needle and the tip was gone. It idled so bad I thought the motor was done. The cam chain was slapping the cases inside. Horrible sound. Typical for that bike. New needle, carb sync and all was good with the world.........well maybe that's a stretch, but at least it run good and was quiet. With all the crap in that tank and what not. You may still have to clean the carbs one or two more times. But it should only be a light cleaning. Sometime crud can still up to those little pilot jets. In the past I'd get about two tanks of fuel run through and they start to run kind a crappy again. That's about enough fuel to flush things out/into the carbs again. I'd go over it one more time. After that it's normally solid. I've done my fair share of working on old crappies or someone else's old crappy bike. Always good fun and a chance to learn something new or use what you know to bring them back from the junk pile death row. __________________ Follow PNW Riders on Facebook and Twitter


07-23-2012, 06:41 AM	#45
hartattack Permit Joined: Sep 2011 From: Issaquah, WA I Ride: 2004 KTM 525 EXC, 2003 CRF 150F, 1995 Suzuki DR 350, WWII Paratrooper Minibike, PROJECT: Old Di Blasi Folding Minibike	Update? __________________ Follow PNW Riders on Facebook and Twitter


07-23-2012, 06:53 AM	#46
nemisis714 Shredder Joined: Jul 2010 From: Kent, WA I Ride: 2011 Kawi Versys and a 1999 Yamaha WR400F	Still fiddling with the carbs.... going to take them off again and double check the nothing is clogged __________________ Follow PNW Riders on Facebook and Twitter


07-23-2012, 06:58 AM	#47
hartattack Permit Joined: Sep 2011 From: Issaquah, WA I Ride: 2004 KTM 525 EXC, 2003 CRF 150F, 1995 Suzuki DR 350, WWII Paratrooper Minibike, PROJECT: Old Di Blasi Folding Minibike	Ok. I'll be waiting __________________ Follow PNW Riders on Facebook and Twitter


10-09-2012, 08:05 PM	#48
nemisis714 Shredder Joined: Jul 2010 From: Kent, WA I Ride: 2011 Kawi Versys and a 1999 Yamaha WR400F	My god I am a lazy bum! I let the bike sit this whole time without touching it because I never had the time.... well, when I did have the time, I just didn't want to do it. So now, I got back to it tonight by pulling the carbs off and taking them apart... again. Not surprisingly, because of the bad job with the tank cleaning, the carbs had really sticky gunk in them so I pulled EVERYTHING off the carbs and they are now sitting in Berrymans chem dip for a while to get everything off again. I also noted as I took everything off that one of the jets broke as it came out and the right carb was missing an O-ring that goes with the pilot jet. Lesson learned: Don't be a stupid lazy bum that wants to take a shortcut in cleaning parts on a bike. So now I have the carbs taken apart on the desk in my room with parts going in and out of the ultrasonic cleaner with simple green in it. Hopefully I am doing it right this time. __________________ Follow PNW Riders on Facebook and Twitter


10-19-2012, 10:18 PM	#49
nemisis714 Shredder Joined: Jul 2010 From: Kent, WA I Ride: 2011 Kawi Versys and a 1999 Yamaha WR400F	Ok, carbs are all back together and on the bike. Good mews is they are clean for real this time. Ok, now for the root of the problem... the gas tank. I have taken MEK substitute to the tank to get the inside clean and it seemsti have gotten everything out, the only problem is that it kills paint without prejudice. Now there are a few small spots on the outside that got splashed a little bit with MEK. Here is the container that had the contents of the tank in it. as you can see, this is the reason the carbs got gummed up. By hitting the tank with MEK, I hope that all that will come out already has. Next step is to see about putting the tank back on and flushing the coolant. Tomorrow will also see another test of whether or not it runs properly. __________________ Follow PNW Riders on Facebook and Twitter


10-19-2012, 10:32 PM	#50
ZXWUT? Novice Racer Joined: Sep 2007 From: Bremerton, WA I Ride: 05 625 SMC	Woohoo! Posted via PNW Riders Mobile __________________ Follow PNW Riders on Facebook and Twitter


10-20-2012, 12:09 PM	#51
nemisis714 Shredder Joined: Jul 2010 From: Kent, WA I Ride: 2011 Kawi Versys and a 1999 Yamaha WR400F	Ok, battery is back in, tank is back on with new fuel in it... the only problem is that it isn't firing up... all it does is turn over. I can tell some fuel is in there because when I give it a little throttle, it acts like it is harder to turn over and give a heartier thump as it turns over. Do you guys have any ideas? __________________ Follow PNW Riders on Facebook and Twitter


10-20-2012, 12:34 PM	#52
NoMornings Pit Crew Joined: Jan 2010 From: Walla Walla, Wa I Ride: 1989 Honda VTR250 (x 4), 1984 Honda VF500F (x2)	Idle screws set correctly? Spark plug wires back on the correct plug? Kill switch? And - if the carb float bowls have drain screws - open them and make sure there's fuel in the bowl. __________________ Follow PNW Riders on Facebook and Twitter

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode