11-16-2018, 10:01 PM | #1 |
Join Date: Jun 2018
Posts: 54
|
Hawk stalls when cold
Recently I've been having this problem, when I first start my Hawk it idles fine then suddenly it stalls and makes a strange noise.
Please listen to it stall and tell me what you think. I tired regapping plug. |
|
11-16-2018, 11:42 PM | #2 |
Join Date: Jul 2017
Location: Montucky
Posts: 209
|
Have you ever adjusted the valves?
__________________
1983 Honda Xl600R 2016 Ducati Multistrada 1200S DVT |
|
11-17-2018, 02:41 AM | #3 |
Join Date: Jan 2012
Location: ChCh , NZ
Posts: 2,265
|
the noise sounds like the starter clutch..
dose it stall when it is hot also... is it not comeing into winter over there... Has the temps got much colder lately where you live.. .
__________________
09 XT660R ... 06 TTR250 ... 80 Montesa H6 125 Enduro... 77 Montesa Cota 348 MRR "Malcom Rathnell Replica"... Current resto projects.. 81 Honda CT110... 80 Kawasaki KL250A1... 11 Husaburg TE125 enduro... "sold" along with another 31... Lifan 125 Pitbike.. "stolen" ... KIWI BIKER FORUM...... http://www.kiwibiker.co.nz/forums/content.php All the best offroad rides in NZ... http://www.remotemoto.com/ E-mail... xtpete1@gmail.com |
|
11-17-2018, 10:28 AM | #4 |
Join Date: Sep 2017
Location: N Texas
Posts: 706
|
Mine will do that when it is cold sometimes. I just idle it up a wee bit until it warms up. My prob is in the tuning as I still have the stock carb and have not adjusted it to cold weather.
|
|
11-17-2018, 11:14 AM | #6 |
Join Date: Jun 2018
Posts: 54
|
It's been doing this when weather was hot also, and when the engine is warmed up it will not stall.
I've adjusted the valves a few times to spec. As far as rejet, I need to change out the piolt? I'm out about 2.5 turns on the mix screw. I have some very small drill bits I'm going to try to drill out the piolt jet. I've already changed out main jet to 110. |
|
11-17-2018, 12:19 PM | #7 |
Join Date: Jul 2018
Location: NEPA
Posts: 273
|
Ya, what he said.
The pilot jet is too small. Your not on the main till the throttle is open.
__________________
2018 Hawk P&P Decked .040 off the head. 17/43 D.I.D. 428, NGK Iridium plug, DeCat, Wrapped pipe, Custom S.S. Muffler core, Nibbi PE30 115/35, L.E.D. Lights, Digital Cluster, USB port, Cutting Bord skid plate, Oil cooler w/ custom CRF oil filter inline, 5Wt fork oil, Rear Shock, CNC Back Rack, 30mm FAT bars, Bark Busters, ProGrips, Adjustable levers, Shinko 700’s lots of Loctite! |
|
11-17-2018, 12:44 PM | #8 |
Join Date: Jul 2018
Posts: 64
|
Yes, on the lean side, have you tried leaving the choke 1/2 on until it is warm?. I'm considering drilling the pilot jet as well. I measured the stock size orfice to be .016 thinking of .018.
|
|
11-17-2018, 01:16 PM | #9 |
Join Date: Jun 2018
Posts: 54
|
Oh nvm I don't think I have a bit that small. What makuni jet is comparable?
I have same issue with choke on. What material is the jet made out of? Maybe I can stick a wire through it and slowly enlarge it? |
|
11-17-2018, 03:04 PM | #10 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
|
All jetting considerations should be done only on a hot engine. If your are showing signs of lean or rich once warmed up, then consider the jetting. Being 2.5 turns out is a better indicator of maybe needing to go up half a step or a full step.
All of that said, Digger brought up a better point. The half choke position exists for a reason. In sub 50 degree temps I will idle the bike up to a full minute at full choke before going to half choke, where it stays until the engine is up to temp enough where it will idle and run fine without it. The choke is there for more than just starting the bike.
__________________
Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
|
11-18-2018, 10:03 AM | #13 | |
Join Date: Jun 2011
Posts: 1,335
|
Quote:
Yes. |
|
|
11-18-2018, 06:42 PM | #14 |
Join Date: Jun 2018
Posts: 54
|
With chock 1/2 way or full it won't start, choke off is the only way it will somewhat idle.
|
|
11-19-2018, 04:36 PM | #15 |
Join Date: Sep 2018
Posts: 173
|
Same here, and that's with the mix screw 1.5 turns out, 0.00285 valves, and a 110 needle jet. You basically have to swap for a VM26 clone to get a proper pilot jet.. I'm just using starting fluid for now..
|
|
|
|
|
|