Posts
11
Joined
5/2/2017
Location
bathurst ,New-Brunswick
CA
Edited Date/Time
5/4/2017 9:23pm
Hi this is my first post so sorry for any mistakes...
So my yz 250 was pulling strong the last time a road it. we went for a little pit ride so I would ride for 30-45 min then rest then go again and so on.. one of the time the bike started then stalled, after that I was only able to start it with choke pulled out and when I would of put it in the bike would stall. did that 4-5 times, then gave like 5-10 good throttle twist, disengage the choke and the bike was good for the day.
now my real problem
one week after that(yesterday) I tried to start the bike and, nothing it was late so I just let the bike there. this morning I check the spark plug it sparked red orangeish (is it supposed to be blue??) I put some gas directly to the cylinder and it started. I took the air filter out to see if the filter was the problem, tried a few kicks and nothing. so I know my problem is gas not getting to the engine. I pulled the carb out of the bike and there was gas in the air intake dont know if thats normal??
I only had that bike for 8 hrs and its a used bike, carb float bows screws were all striped so ill try to get those out tomorrow.
basically does anyone knows what could be causing this? any tips is appreciated thanks
Im french and I know I made a lot of mistakes sorry .:p
So my yz 250 was pulling strong the last time a road it. we went for a little pit ride so I would ride for 30-45 min then rest then go again and so on.. one of the time the bike started then stalled, after that I was only able to start it with choke pulled out and when I would of put it in the bike would stall. did that 4-5 times, then gave like 5-10 good throttle twist, disengage the choke and the bike was good for the day.
now my real problem
one week after that(yesterday) I tried to start the bike and, nothing it was late so I just let the bike there. this morning I check the spark plug it sparked red orangeish (is it supposed to be blue??) I put some gas directly to the cylinder and it started. I took the air filter out to see if the filter was the problem, tried a few kicks and nothing. so I know my problem is gas not getting to the engine. I pulled the carb out of the bike and there was gas in the air intake dont know if thats normal??
I only had that bike for 8 hrs and its a used bike, carb float bows screws were all striped so ill try to get those out tomorrow.
basically does anyone knows what could be causing this? any tips is appreciated thanks
Im french and I know I made a lot of mistakes sorry .:p
1. Sounds like old gas left in the carb. This has allowed the pilot jet to clog and may have also created some trash in the main jet as well. Remove and clean the carb in a good carb soak cleaner and then clean each jet. Reset the float height. Make sure the float needle is clean.
2. The spark not good. I would suggest cleaning the coil connections and mounts as there most likely will be rust and dried dirt there. Also remove the plug cap, cut the wire 1/4" and reinstall. Now check you r spark color. If still not Bright Blue you will need to do an ohms test on the coil and the stator.
3. Get rid of that old gas mix and start fresh. Never leave fuel in the carb for more than a couple of days.
Paw Paw
The Shop
matty hamz- will chek that filter thx.
captmoto - I have good flow from the fuel line, you are reffering to the pipe from the petcock to the carb right?
so I opened the carb, and cleand every jet, I couldnt get the air screw out wich was weird but I didnt bother with it too much. every thing was clean the float was a little too low so I raised it. only thing looking weird is the brown ish color on every thing thats brass, is that normal? next cheking the petcock filter and after that Ill do something about the fire sparking red.
I cut the spark plug wire about 1/4, I think that this has been done before because im almost out of cable now... Ill probably get another coil so I wont mind cleaning it. checked the petcock filter and it was really clean.
xnationalwrench- ok ill get one of those brake cleaner baskets, the pic of the pilot jet was there to let you see the brown ish color.
The tip of the solenoid is literally a piece of rubber the size of a match head but it cannot be purchased separately. You have to buy the whole solenoid which is not cheap.
The pressed in needle seat is not sold. There are some out there that are "close" but info is sketchy as to whether they work correct on this carb.
The D-shaped o-ring under the jet-block is impossible to find. It is not the same as the ones on the aftermarket PWK's sold by Sudco, JD Jetting, etc. and I have not been able to find it anywhere. If you wreck that o-ring the carb is basically a very expensive paperweight.
tanks every one really apreciate this community!!!
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