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Old 12-13-2013, 12:40 PM   #18841
BigStick
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Joined: Apr 2010
Location: Golden, Colorado
Oddometer: 48
Cold Starting

For cold starting try this old 'trapper' trick:

- Turn fuel valve to reserve
- Lean the bike over to the fuel valve side
- Let fuel trickle out the overflow tubes for about 5 seconds (keep the propane torch away!)
- Might want to twist the idle screw up a half turn
- Choke and kick start as usual (TDC drill, etc.)

I've removed the little spring loaded flapper from my choke's butterfly valve and this technique helps get the pig fired up quickly.

Hope this helps!

-'Stick!
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Old 12-14-2013, 06:04 AM   #18842
RideFreak
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Quote:
Originally Posted by PeteN95 View Post
They do prime easier, but I just pull the compression release and twist the throttle while I kick it through 6-8 times. This will pull enough fuel into the cylinder to fire it with the stock carb.
I used that trick all the time, with the XRs only choke plate it'd take 3 easy kicks (comp rel in) throttle open, then it'd start first kick 99% of the time.

W/O an accel pump, ya got to get some fuel into the motor first.
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Old 12-14-2013, 10:46 AM   #18843
jules083
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Ok, I turned the idle screw out a bit more, about 1/2 turn. Compression release in then 4 kick throughs. Compression release out, normal procedure, gave it about 20-30 hard kicks. Nothing. Hmm....



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Old 12-14-2013, 10:47 AM   #18844
cognugget
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Location: Washington State
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Quote:
Originally Posted by jules083 View Post
Ok, I turned the idle screw out a bit more, about 1/2 turn. Compression release in then 4 kick throughs. Compression release out, normal procedure, gave it about 20-30 hard kicks. Nothing.

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Something is off. Valve spec? Jetting? Compression? Bad fuel? Fuel screw?

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Old 12-14-2013, 10:51 AM   #18845
jules083
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Originally Posted by cognugget View Post
Something is off. Valve spec? Jetting? Compression? Bad fuel? Fuel screw?

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Valves are right.

Jetting should be right, or at least close. 68s pilot, 175 main, 100' elevation. Main is likely a bit lean for the temperature but shouldn't affect starting, right?

Fuel should be good. I'm at about 1/3 of a tank, ran perfect so far.

Fuel screw might be the culprit. I'm searching for a suitable screwdriver now. Where about should it be? I can't remember where mine is, ill know soon I hope.

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Old 12-14-2013, 11:13 AM   #18846
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Ok, fuel screw was 1 3/4 turns out. Just went in 1/4 turn increments out to 3 1\4 out, 5-6 healthy kicks each time, nothing.

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Old 12-14-2013, 11:15 AM   #18847
cognugget
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Check the plug. Are you getting fuel?

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Old 12-14-2013, 11:28 AM   #18848
jules083
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Quote:
Originally Posted by cognugget View Post
Check the plug. Are you getting fuel?

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I'm going to go get fresh gas, as soon as I get back I'll pull the tank and check the plug. I doubt it's either, but worth a shot. Gas is starting to smell a bit funny I guess, but it does this every winter so I'm not thinking it's gas or spark plug related.




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Old 12-14-2013, 11:30 AM   #18849
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Check for clogged pilot jet

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Old 12-14-2013, 11:37 AM   #18850
mdlak
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Is this a normal casting mark on my XRR engine case or some kind of repair? Located on right side near rear brake arm. Anyone have similar markings in the same area?

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Old 12-14-2013, 11:41 AM   #18851
jules083
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Game off for now. See the green stuff? I don't think that's supposed to be there. Looks like a good time to change coolant. Lol.

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Old 12-14-2013, 11:46 AM   #18852
OR Trail
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Interesting - mine is identical. I took the cover off and it looked a bit stressed on the inside so I gave it a coat of JB Weld on the outside and called it good. I thought it was from something hitting it but I'm interested to hear if this is common.

Quote:
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Is this a normal casting mark on my XRR engine case or some kind of repair? Located on right side near rear brake arm. Anyone have similar markings in the same area?

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Old 12-14-2013, 12:05 PM   #18853
RideFreak
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Quote:
Originally Posted by mdlak View Post
Is this a normal casting mark on my XRR engine case or some kind of repair? Located on right side near rear brake arm. Anyone have similar markings in the same area?

It looks like a casting mark to me, it appears a thin layer flaked off, probably when it was removed from the mold. I doubt a welder could perform a repair that looked that good and usually when a case is repaired there will be a bead and heat marks or evidence that the weld was ground down.
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Old 12-14-2013, 12:29 PM   #18854
slogger
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I've seen this on my last 3 XR's. Normal.

Quote:
Originally Posted by mdlak View Post
Is this a normal casting mark on my XRR engine case or some kind of repair? Located on right side near rear brake arm. Anyone have similar markings in the same area?

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Old 12-14-2013, 01:47 PM   #18855
mdlak
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Casting marks/lines seem to be normal. Went to see a friend with a 2002 XR650R and his bike has the same marks. Thank you!
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