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Started By
Message
OT Motorcycle Mechanic help needed
Posted on 6/5/19 at 11:50 am
Posted on 6/5/19 at 11:50 am
So got a 2005 Honda Sabre 1100 for my Uncle yesterday for his birthday coming up on Thursday. He had to sell his a few years back to pay for my Aunt's treatment so wanted to get him the same bike he had. But having issues with keeping it running. It sat in a shed for around 8 months so I'm assuming a lot of gunk build up in the carb and fuel systems.
It looks really clean overall so I don't feel there is rust in the tank. It's a dual carb.
Issue(s) - When choke fully engaged it starts but struggles a bit to start. It runs decently well on it but hiccups every couple of seconds like it is trying to find gas. Once it's warm and I turn the choke down it has major issues. It struggles to stay idle, has frequent small backfires, and needs throttle to be hit a little to stay on. The throttle also takes a little time to get back to idle RPM's.
I drove it from the guys house but it died and I had to run start it back to life and got it home. It runs a lot better at high RPMS.
I've toyed with the fuel/air screw on the carbs and got them to 3 turns so the ratio seems correct. I got spark plugs and am taking it apart tomorrow before I go to clean the carbs and install a gravity pull from the tank since they seem to work better. ::Also ran new gas with Seafoam mix in already::
What else do I need to do, or parts do I need to buy tonight to make sure I get this thing running smooth enough to get it to his house and have it able to ride for him tomorrow?
It looks really clean overall so I don't feel there is rust in the tank. It's a dual carb.
Issue(s) - When choke fully engaged it starts but struggles a bit to start. It runs decently well on it but hiccups every couple of seconds like it is trying to find gas. Once it's warm and I turn the choke down it has major issues. It struggles to stay idle, has frequent small backfires, and needs throttle to be hit a little to stay on. The throttle also takes a little time to get back to idle RPM's.
I drove it from the guys house but it died and I had to run start it back to life and got it home. It runs a lot better at high RPMS.
I've toyed with the fuel/air screw on the carbs and got them to 3 turns so the ratio seems correct. I got spark plugs and am taking it apart tomorrow before I go to clean the carbs and install a gravity pull from the tank since they seem to work better. ::Also ran new gas with Seafoam mix in already::
What else do I need to do, or parts do I need to buy tonight to make sure I get this thing running smooth enough to get it to his house and have it able to ride for him tomorrow?
This post was edited on 6/5/19 at 12:04 pm
5
Posted on 6/5/19 at 11:56 am to Gatorbait2008
Drain the gas, fill it again with some Seafoam and gas, Ride it for a few hours. It has a varnish build up in the carbs. The low speed jets are clogged more than the high speed ones but the Seafoam and fresh gas will clean it all out.
Posted on 6/5/19 at 12:01 pm to Hangit
I drained and did seafoam already. Issue is it won't stay on when riding if I hit any stop lights. I left it running for an hour last night with seafoam. Got the white smoke to show it went through. It def sounded better after the seafoam. I forgot to put that I had done that already, and this is the issue post Seafoam. It was a lot worse before I did this.
This post was edited on 6/5/19 at 12:02 pm
Posted on 6/5/19 at 12:24 pm to Gatorbait2008
Three turns out is a good starting point. After market exhaust, jet kits, etc. can change that but 3 is close. it may be 3.50.
Also, did you hook up a carb-sync kit and get the vacuum sync'ed up for both carbs? They usually come with 4 mercury gauges but you only need two.
New plugs and air filter should be helpful too.
Also, did you hook up a carb-sync kit and get the vacuum sync'ed up for both carbs? They usually come with 4 mercury gauges but you only need two.
New plugs and air filter should be helpful too.
Posted on 6/5/19 at 12:35 pm to Hangit
The air filter actually looked good. I tried 3.5 but it seemed to get worse the further from 3 I got so kept it there. Haven't pulled carbs out yet but I checked for leaks with a propane torch.
Don't have a sync kit. My motorcycles are FI so I don't have the advanced tools for carb work.
Don't have a sync kit. My motorcycles are FI so I don't have the advanced tools for carb work.
Posted on 6/5/19 at 12:38 pm to Gatorbait2008
He may have one. They are cheaper than an hour of shop time and part of a tune-up. He can sync at his leisure.
Posted on 6/5/19 at 12:39 pm to Hangit
quote:
The low speed jets are clogged more than the high speed ones but the Seafoam and fresh gas will clean it all out.
Pull off the float bowls and take the jets out. Spray carb cleaner through them and reinstall. Clean the bowls of any gunk or debris. Also check for any airleaks from the intake boots and/or airbox. If you put REAL gas in the bike with no ethanol, it should help as well. Plenty of good videos on youtube to help clean the carbs properly. Good luck and good on you for helping out your family member.
Posted on 6/5/19 at 12:40 pm to Gatorbait2008
Good start with what you’ve done. Change or clean the plugs - pull the throttle position sensor and clean it.
Posted on 6/5/19 at 12:45 pm to randybobandy
Sweet. Appreciate it 
Posted on 6/5/19 at 12:47 pm to Pvt Hudson
Yea I got new spark plugs. Wondering if the hiccup may just be it misfiring. I thought it was running lean but really can't tell. The throttle position sensor is a good idea. I wish I had more time to get it all apart and really go at it. Just haven't dealt with carbs in a long time and forgot how fragile they are.
Posted on 6/5/19 at 1:05 pm to randybobandy
quote:
Pull off the float bowls and take the jets out. Spray carb cleaner through them and reinstall.
I did this on a friend's V-Star 650 that had sat for almost a year with gas in it and would not start. It is easy and works like a champ. If you are gentle with the gaskets you can reuse them.
Posted on 6/5/19 at 1:19 pm to Hangit
True. I got two cans of carb cleaner. I may go buy gaskets if they have them just to put new ones on so he doesn't have to worry about it. Don't think any leak based on the propane test I did around the carb.
Posted on 6/5/19 at 1:25 pm to Gatorbait2008
Pilot (or low speed) jets are clogged. Pull the carbs and clean, or replace the jets.
If you want to try a full carb soak Yamaha makes a carb dip you mix with distilled water. It works well. Even better if put into an ultrasonic cleaner.
If you want to try a full carb soak Yamaha makes a carb dip you mix with distilled water. It works well. Even better if put into an ultrasonic cleaner.
This post was edited on 6/5/19 at 1:26 pm
Posted on 6/5/19 at 1:27 pm to dragginass
Yea I wanted to take it to a shop to have it cleaned with the ultrasonic but no one had the time to get it done quickly. I may set it up for him to go get it done later this month and to have the rest of the bike checked just to make sure it's all good. It only has 10k miles luckily. I'll look up jets see if I can get them today.
Posted on 6/5/19 at 1:34 pm to Gatorbait2008
Pull the carbs off disassemble them clean them you will be good to go YouTube it it’s not difficult you may pull the bowls blast it with carb cleaner but it’s not hard to pull them apart and clean them
Posted on 6/5/19 at 1:45 pm to Gatorbait2008
pull carbs and completely disassemble, let soak in berrysmens chem dip overnight then clear all passages with carb cleaner spray and hand clean any remaining crud.
now get a rebuild kit and reassemble the carbs
when you ran it you clogged up all the jets and passages with that old funky gas sludge in the tank so now you have to clear and clean them by hand
also you need to flush out the old brake fluid before it starts causing rust and ruin the master cylinder and calipers
if it were me i would still pull the petcock and make sure the tank is clear of and debris and that the screen mesh is fully intact and clear. you would be surprised the amount of crap you can get from pump gas at some stations
now get a rebuild kit and reassemble the carbs
when you ran it you clogged up all the jets and passages with that old funky gas sludge in the tank so now you have to clear and clean them by hand
also you need to flush out the old brake fluid before it starts causing rust and ruin the master cylinder and calipers
if it were me i would still pull the petcock and make sure the tank is clear of and debris and that the screen mesh is fully intact and clear. you would be surprised the amount of crap you can get from pump gas at some stations
This post was edited on 6/5/19 at 1:59 pm
Posted on 6/6/19 at 5:23 pm to keakar
I got it running pretty well. Still some small hiccups and idle needs a rev occasionally when at a light(people seem annoyed by it). Seemed to do well though. About to take it over thanks for the help guys
Posted on 6/6/19 at 5:28 pm to Gatorbait2008
Well it was caused by ethanol and sitting up I’m sure. If you can get it running with 100 % gas after what you have done you might just be able to run it until it works it’s way out
Posted on 6/6/19 at 10:38 pm to Martini
Yea. I feel like it may have an exhaust leak. I talked to him after he rode it. Still some backfire in deceleration but it stayed on well at idle. I'll let him get into that mess. I got it to him and that was the goal.
Posted on 6/6/19 at 10:47 pm to Martini
quote:
If you can get it running with 100 % gas after what you have done you might just be able to run it until it works it’s way out
Good gas and time resolve quite a few "carb issues"
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