|
06-20-2019, 03:30 PM | #1 |
Join Date: Jun 2019
Posts: 1
|
Hawk 250 won’t rev
Bought a hawk change to a vm26 carb put in a 115 main jet was running good. Got the aftermarket exhaust and pod air filter today installed both. And now can’t get engine to rev up. Low rpms seem fine. Adjusted the valves and moved up to the 125 main jet and add 2 washers to the needle didn’t seem to change anything. Would getting bigger pilot jets help?
|
|
06-20-2019, 03:31 PM | #2 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
|
Check that the choke is not on half way.
__________________
2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel |
|
06-20-2019, 04:06 PM | #3 |
Join Date: Dec 2015
Location: CO
Posts: 1,525
|
Good time to check the o-rings/seals on the carb and intake/engine flange (cheap Chinese o-rings like to shrink over time), air leaks between the engine and carb can cause some funny things to happen also
__________________
"Think as you like... but this self proclaimed Professor is always right" - Buckshot "You never know what someone is hiding beneath their smile..." - NinjaTom - R.I.P. |
|
07-01-2019, 11:08 AM | #4 |
Join Date: Nov 2016
Location: robertsdale alabama usa
Posts: 1,007
|
your new carb choke may be opposite of the oem
__________________
1991 harley heritage softail classic 2016 hawk kaw h1 400 tripple 13' long chopper in progress 2009 johnny pag bar hog 2004 hd electra glide ultra classic shriner edition 1997 harley davidson 1200 sportster 1972 harley davidson amf sx250 |
|
07-01-2019, 11:43 PM | #5 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
|
This. Very common mistake people make when installing the mikuni clones. Their chokes operate the.opposite of the stock carb.
Also, as Jerry said, if the choke is on half ir will be fine at low rpm/ throttle, but will be too restricted beyond that and... choke out.
__________________
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 |
|
07-01-2019, 09:52 PM | #6 |
Join Date: Jun 2016
Location: Hell
Posts: 2,408
|
Remove pod filter as some block air flow!!
|
|
07-01-2019, 10:36 PM | #7 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
|
Quote:
|
|
|
07-01-2019, 11:05 PM | #8 |
Join Date: Jun 2016
Location: Hell
Posts: 2,408
|
Tuning the stock carb or mikuni or any other won’t work unless you understand things better
Kinda what I’ve said in the past n learning on the stock carb is a good starting point etc |
|
|
|
|
|