Husaberg
Go Back   Husaberg Forum > Mechanical and Technical > Mechanical

Mechanical Mechanical Forum - spinning bits and gyrating bobs


Reply
 
LinkBack Thread Tools Display Modes
February 26th, 2009, 10:05 AM   #1
Senior Member
 
Joined: Oct 2004
From: Boonies north of Reno, Nevada

Posts: 187
Thanks: 0

I Ride:
04 550 runs rough for first mile

Ever since I got my motor rebuilt, I have a problem with it popping and complaining for the first mile or so. It gets to the point where it just won't go unless I let it idle and clear out. Then it runs fine 98% with a few pops here and there. I was told that it was because I was riding harder and the case vent was putting oil into the carb from sitting after the previous ride. Does this sound correct? If so, can someone point me to the pictures/parts list to cap off the frame and re-route the vents?
It never did this before the rebuild. Maybe I should get a new 570 (if $$ would allow)Thanks, John
jmumme is offline  
 
February 26th, 2009, 10:12 AM   #2
Moderator
 
berger's Avatar
 
Joined: Apr 2002
From: Phoenix Arizona

Posts: 3,150
Thanks: 9

I Ride: 2010 FX450
Re: 04 550 runs rough for first mile

Originally Posted by jmumme
Ever since I got my motor rebuilt, I have a problem with it popping and complaining for the first mile or so. It gets to the point where it just won't go unless I let it idle and clear out. Then it runs fine 98% with a few pops here and there. I was told that it was because I was riding harder and the case vent was putting oil into the carb from sitting after the previous ride. Does this sound correct? If so, can someone point me to the pictures/parts list to cap off the frame and re-route the vents?
It never did this before the rebuild. Maybe I should get a new 570 (if $$ would allow)Thanks, John
This shouldnt happen. What you want to look for is oil pooling in the carb intake boot. Next time before you ride, remove the air filter and have a look down into the boot leading to the carb. See if there is oil pooling there.
berger is offline  
February 26th, 2009, 10:16 AM   #3
Senior Member
 
Joined: Oct 2004
From: Boonies north of Reno, Nevada

Posts: 187
Thanks: 0

I Ride:
RE: Re: 04 550 runs rough for first mile

I did that before yesterdays ride and it still did it. After yesterdays ride, I cleaned it up again and wiped out the entire airbox. I'll have to pull it again today and see if anything pooled up. It should be dry.
jmumme is offline  
February 26th, 2009, 11:17 AM   #4
Senior Member
 
Joined: Nov 2001
From: Ely, England

Posts: 15,666
Thanks: 449

I Ride: Husaberg FE501e 2003
RE: Re: 04 550 runs rough for first mile

i'd say your carb is starving at low revs and it's particularly noticeable when cold. blow out the choke jet and just do the whole carb while you're there.

regards

Taffy
Taffy is online now  
February 26th, 2009, 11:22 AM   #5
Senior Member
 
Joined: Oct 2004
From: Boonies north of Reno, Nevada

Posts: 187
Thanks: 0

I Ride:
RE: Re: 04 550 runs rough for first mile

It starts fine and the choke circuit works normally. And it idles fine all the time, warm, cold (after choking the start) and when its having its tantrum. It acts like its the main that's the problem. Like it is sucking something like oil into the main. Once it's gone comes back to life.
jmumme is offline  
February 26th, 2009, 11:24 AM   #6
Moderator
 
Joined: Oct 2002
From: Sunland, CA

Posts: 3,117
Thanks: 19

I Ride:
Classic symptom of a clogged pilot jet.................

As Taffy recommends, pull the carb off and clean the whole thing out well. Be careful not to get any carb cleaner on the vacuum release plate on the front of the slide, it has a very delicate O ring. You really don't want to get carb cleaner on any of the rubber pieces on the carb.

I highly recommend Berryman's carb cleaner. Wear good solvent gloves, this stuff is the last of the gnarly stuff.

Dale
DaleEO is offline  
February 26th, 2009, 11:28 AM   #7
Senior Member
 
Joined: Oct 2004
From: Boonies north of Reno, Nevada

Posts: 187
Thanks: 0

I Ride:
It did sit for a while when the motor was being done. So I'll give it a try. Thanks Guys!
jmumme is offline  
March 12th, 2009, 05:49 PM   #8
Senior Member
 
Joined: Oct 2004
From: Boonies north of Reno, Nevada

Posts: 187
Thanks: 0

I Ride:
I finally went thru the carb, twice, and it did the same thing. Then I noticed a rip in my TPS wiring boot . As I looked at it a bit more, the TPS black wire was badly broken. A slight pull and it broke completely. Its broken right against the the TPS. I called the shop who quoted me about $250 for the TPS itself. I guess I try and fix it with solder and epoxy.
jmumme is offline  
March 12th, 2009, 11:38 PM   #9
Senior Member
 
Joined: Sep 2006
From: Hayle Cornwall

Posts: 987
Thanks: 22

I Ride:
Originally Posted by jmumme
I finally went thru the carb, twice, and it did the same thing. Then I noticed a rip in my TPS wiring boot . As I looked at it a bit more, the TPS black wire was badly broken. A slight pull and it broke completely. Its broken right against the the TPS. I called the shop who quoted me about $250 for the TPS itself. I guess I try and fix it with solder and epoxy.
Hi Jmumme,

If you warm the face of the TPS where the wires come out with a heat gun you can remove the original epoxy and unsolder the broken wire.

Regards

Sparks.
sparks is offline  
March 12th, 2009, 11:39 PM   #10
Senior Member
 
Joined: Sep 2006
From: Hayle Cornwall

Posts: 987
Thanks: 22

I Ride:
Originally Posted by jmumme
I finally went thru the carb, twice, and it did the same thing. Then I noticed a rip in my TPS wiring boot . As I looked at it a bit more, the TPS black wire was badly broken. A slight pull and it broke completely. Its broken right against the the TPS. I called the shop who quoted me about $250 for the TPS itself. I guess I try and fix it with solder and epoxy.
Hi Jmumme,

If you warm the face of the TPS where the wires come out with a heat gun you can remove the original epoxy and unsolder the broken wire.

Regards

Sparks.
sparks is offline  
Reply

  Husaberg Forum > Mechanical and Technical > Mechanical

Tags
550, mile, rough, runs



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rough Idle and bottom end... Johnniep Fuel 0 December 1st, 2012 08:32 AM
Husaberg has rough weekend in Poland WEC tm-enduro Ride Reports 1 June 15th, 2008 09:40 PM
06Fe550e mid ride rough running bigbob Fuel 19 May 2nd, 2008 11:17 AM
First Mile Win 1996 LINEAWEAVER Husaberg 3 February 11th, 2007 10:03 AM
Rough running pulling my hair out SteveT Fuel 14 July 3rd, 2006 11:32 AM


Facebook Twitter Google+ RSS Feed