ranchomice

Special ordered honda fuel line. Stacks in place and proper, O-rings in place and proper, Carbs were having no issue when fuel line broke. TPS set by Mike (8541hawk) prior to any problems. The bike was running better than it ever had! I am just lost. I've gone through it all in my head over and over. I didn't change anything but the fuel line. I guess I will be taking it apart yet again tomorrow. I didn't check the new line to see if it flowed but it was sealed in a bag from the factory....

residentg

Those filters are for the slides, which you said one was not moving as freely. Have you done a complete clean of the carbs, including the top part? Some of those old degraded triangular filters may be interfering with your slide movement. Take the slides out and clean everything up.

JB

ranchomice

Carbs were done about 2 months ago by Mike8541hawk. Then about 2 weeks ago he put new #48 pilots in them as I got new exhaust. The bike ran better than ever until the fuel line broke. The slides move freely, in fact, the rear slide may be moving (closing) TOO freely. That may be the next thing I check. B4 I take it apart, I'll try the wd-40 spray to check for leaks. I'm wondering if riding the bike about 1/4 mi. with a broken fuel line caused debris to be introduced?

8541Hawk

The only other thing I can think of is maybe you have developed a pin hole or crack in the diaphragm. It is kind of rare for it to happen but there is or was a lot of dry rot on the rest of the rubber lines.

Sorry I don't have a easy answer for you but you have eliminated just about all the other possible causes for your problem.

residentg

dumb questions - which fuel line broke, and can you describe "broke" a bit more? As 8541 said, yoiu have eliminated most all things, I am now streaching a bit.

RK1

I don't have any special knowledge or insights here, but common sense says either the new fuel line is faulty (unlikely) or one of the hoses or tubes you disconnected didn't get reconnected properly or might be damaged.

I'd check the tube from the rear vacuum nipple to the petcock- make sure it isn't kinked, torn etc.

I'd check the fuel tank breather hose for same.

I'd check those fat stubby air hoses that run from the carb joints into the air box, especially the front/left one inboard of the front crankcase breather hose.

Just can't imagine what it might be other than a hose missed when you put it back together.

ranchomice

Front carb fuel line broke. When we put the pilot jets in, it broke upon dissassembly making it a bit short. It had dry rot but we made it work to get me home etc. My guess is, it was too short, vibrated for a week and split where it met the petcock while I was riding it. RK1, i checked and rechecked everything. Next step is to spray some WD-40 around while it's running to see if I can find a vacuum leak. Aside from that, I'll be checking the slide diaphram.

RK1

I think the chance that something unrelated to you pulling the tank and air box just happened to go south at the exact time that you pulled the tank and air box is pretty remote, but I guess it is possible.

Best of luck. I hope you can sort it out.

residentg

Maybe a chunk of rubber hose is clogging your float needle valve?

jbaxx

I would check the slide diaphragms for pinholes or other leaks.

ranchomice

So I took the bike out for a ride yesterday just to keep the battery charged and such. I haven't taken it apart or even looked for vacuum leaks yet again. I've been really depressed about the bike, to be honest. Anyway, I took it out on the freeway for about 20 miles and when I got off the freeway I decided to crack the throttle and see how she acted from a stop. The bike launched like it should and came up nice and normal. WTF?? It rode great until I got to my destination, as if nothing was wrong. Got back on it after an hour or so, rode back up the freeway and again, things seemed pretty normal. I got almost home and decided to crack the throttle at about 40mph in 4th or 5th and it did the hesitation thing again. It seemed at that point that it only did it under heavy throttle under heavy load at low rpm. I don't know if this changes anyone's thoughts but thought I'd share.
Anybody ever had a problem with a choke? I'm not talking about the usual break at the plastic thread entering the carb, I'm talking about what seems a loose cable at the elbow. The choke being pulled sends the needle in, or out?

residentg

The engine is not getting enough gas, there must be soemthing floating around in your carbs. Cleaning with air and carb cleaner is the way to go. I still think you have a blocked needle valve.

nath981

did you ever figure out what was causing the closing differentiation between the two carbs? pull it apart again to check gasket and inspect diaphram?

other than this, maybe a dyno run could be enlightening. Sometimes things seem to occur consequentially, as with your gas line change, but maybe you just hadn't got on the throttle in the exactly the same way that highlighted the issue.

Steve29 had the kind of hestiation you describe and we screwed around with needle position, air mix, tps, syncing, etc. Oh and that reminds me, the rubber o-ring in his carb slide was cracked/deterioated. maybe you could pull yours off and inspect it?

residentg

^^^ too much air

Rancho - in any case, pull the carbs off, inspect, clean, replace where needed. It all points to those two huge devices.

ranchomice

So I still haven't taken the bike apart and I ride it very short distances maybe every other day just to keeo it charged. I noticed today that once it's started, with the choke out, it will actually drop in rpm and eventually die. It want's to run better and keep an idle, even cold, with the choke in. What the heck is that? Will the bike have the previously mentioned symptoms, as well as these, if a choke was stuck in, or if it was running super rich?

striker3034

I think I'm having a similar problem. However, my problem didn't start after taking the tank off or replacing anything on the bike. I let my dumb friend put his hands on my bike, and while she was a little cold and on choke he decided to give it a few good revs, and then I turned it off and went back inside for a few hours. When I go to leave I get the hesitation seemingly like the bike is getting flooded. I make it to my next destination and then a couple hours later I leave and the bike runs fine. That was a week ago and since then my bike has developed mood swings and will randomly bog down while I'm cruising, bad enough to where I have to pull over and the bike will shut off. Whilst I am on the side of the road I'm able to play with the choke and idle and she will magically spring back to life... it's very confusing.