|
My motor not running well
- Too rich on mag side...
started by mxz380@nu
|
|
|
|
April 1st 2008 at 1:43 PM
|
|
| |
mxz380@nu
Junior Member
|
177 Posts 
Group: Members
Member Since: January 15th 2007
Location: Arviat, Nunavut, Canada
|
|
|
|
| |
I've changed the crank seals... is it the bearings I need to change? It was running ok until I noticed one plug kept fouling without running... so tried to remove float/jets.. managed to break carb. Anyways, replaced seals, and put in different carb, kept running lean/plug white... thanks for any pointers/help.
|
|
 |
|
|
|
|
|
|
| |
Site Supporter
Group: Site Supporters
|
|
| |
|
|
|
|
|
|
|
April 1st 2008 at 1:51 PM
|
|
| |
mrholmquist
Junior Member
|
190 Posts
Group: Members
Member Since: December 15th 2003
Location: cobourg, on, Canada
|
|
|
|
| |
I am not sure what type of sled or any of the conditions. But it sounds like you have one plug going black and one plug going white? You've gone through the carbs and have looked for air leaks well don't forget if the diaphragm for the fuel pump is broken and if the fuel pump pulse line is on the mag side it can cause extra fuel to enter the crankcase through the pulse hose and foul the mag plug
Quote originally posted by mxz380@nu
I've changed the crank seals... is it the bearings I need to change? It was running ok until I noticed one plug kept fouling without running... so tried to remove float/jets.. managed to break carb. Anyways, replaced seals, and put in different carb, kept running lean/plug white... thanks for any pointers/help.
|
|
|
|
|
|
|
April 1st 2008 at 1:58 PM
|
|
| |
mxz380@nu
Junior Member
|
177 Posts
Group: Members
Member Since: January 15th 2007
Location: Arviat, Nunavut, Canada
|
|
|
|
| |
Sled is a 04' mxz 380. I checked the crank bearings. Not sure what is good or bad. Brearings seem to be moving on outer ring a little sideways but not vertically? What's the best way to check if bearings need replacing? It has approx. 5000-7000 kms. Fuel pump pulse line is on PTO side. The jet plunger? (not sure the right name) kept getting stuck, which caused gas running down drain line?....
|
|
|
|
|
|
|
April 2nd 2008 at 10:47 PM
|
|
| |
mxz380@nu
Junior Member
|
177 Posts
Group: Members
Member Since: January 15th 2007
Location: Arviat, Nunavut, Canada
|
|
|
|
| |
Any ideas? Replace carbs?
|
|
|
|
|
|
|
April 3rd 2008 at 10:41 AM
|
|
| |
stormrider62033
wally
|
3684 Posts 
Group: Members
Member Since: December 25th 2004
Location: Gillespie, IL, USA
Current Sled: 99xcr 800
Miles Last Season: 500
Miles This Season: 500
|
|
|
|
| |
needle and seats?? maybe the carb boot ,I would attack this engine with some ether to see if its sucking air ,(base gaskets) (crankcase mating surface) etc if not has to be carb
mid Il alway's waiting for snow,moving north(way north)99xcr 800 97SPX ULTRA 96 zrt 600&800,92 doo plusX 92 v max 4
|
|
|
|
|
|
|
April 3rd 2008 at 9:28 PM
|
|
| |
|
STEVE650
Poor golfer
|
1824 Posts 
Group: Members
Member Since: December 6th 2005
Location: magog, québec, Canada
|
|
|
|
| |
yup, let the engine running idle and spray som brake cleaner or ether near the carb boots or crank seals, and the base. If rpm goes up, the engine is sucking air where it sould not. If the rpm stay at idle, you will have to rejet!
|
|
|
|
|
|
|
April 3rd 2008 at 10:14 PM
|
|
| |
mxz380@nu
Junior Member
|
177 Posts
Group: Members
Member Since: January 15th 2007
Location: Arviat, Nunavut, Canada
|
|
|
|
| |
Thanks for the suggestions... still got at least a month and half riding season, but no running snowmobile sucks!! I'll buy the spray stuff... will starting fluid also work?
|
|
|
|
|
|
|
April 6th 2008 at 10:44 PM
|
|
| |
HippieOfDeath
Starting Member
|
4 Posts
Group: Members
Member Since: March 1st 2008
Location:
|
|
|
|
| |
|
|
|
|
|
|
|
April 12th 2008 at 8:41 PM
|
|
| |
|