01-23-2019, 08:42 AM | #46 |
Join Date: Jan 2019
Posts: 10
|
No but I did by a new mikuni carb and jets they are in the mail. I will try that and see what it does. What jet size should I use I live at about 3k elevation
|
|
01-23-2019, 09:24 AM | #47 |
Join Date: Jun 2016
Location: Hell
Posts: 2,408
|
I’m looking into a kit to tidy up these locked out USA version carbs
Sub $20 fix and all you’ll need parts n tool wise Stay tuned as Chinese New Years has arrived n no one is shipping etc Got pretty much the main stuff coming by the end of week n I’ll see if I have it right or egg on my face |
|
01-23-2019, 10:19 AM | #48 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
|
Quote:
|
|
|
01-23-2019, 10:32 AM | #49 |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
|
I believe these carbs come with a 95 main jet. That should work, but if it is still too lean, try a 100. I hope you bought genuine Mikuni jets. They are the only ones that I know of that are actually flow tested to make sure they are the size they say they are...ARH
|
|
01-23-2019, 03:19 PM | #50 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
|
So, the No is to the valve adjustment question he asked? If not, then I would recommend adjusting the valves before doing anything else.
__________________
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 |
|
02-08-2019, 06:42 PM | #51 | |
Join Date: Jan 2019
Posts: 10
|
Valve adjustment.
Quote:
I tried adjusting the valves and I am not sure I am at tdc. I see two lines then an f and line then like a oval and small line and long line. When I adjusted the values they were very very tight and I had to move them up a lot to get them to free up enough to realine the set but. I assume this was way wrong. I used the oval and assumed it was the t and a manufacturer defect. Used .007 on both. When I was done the bike starts and has a very loud clicking sound of the values. I opened and again and tried the same way at .003 on both. Still loud clicking.. |
|
|
02-08-2019, 07:10 PM | #52 | |
Join Date: Dec 2018
Location: Illinois
Posts: 44
|
Quote:
__________________
Toys: 2017 Hawk 250 (new in 2019) 1999 Softail, Ultima frame, s&s 113” @ 129rwhp 2005 Honda trx450r full mx build 1986 Honda trx250r xc build on race gas 1998 Kawasaki kx250 1995 Polaris xplorer 400 4x4 1997 Jeep Wrangler 3.5” on 33s |
|
|
02-08-2019, 07:15 PM | #53 | |
Join Date: Jan 2019
Posts: 10
|
Quote:
Can you explain that a bit more? How do I know if it's at the top? What's the pencil for? |
|
|
02-08-2019, 09:23 PM | #54 | |
Join Date: Jan 2019
Location: Silver City New Mexico
Posts: 290
|
Quote:
Next : with these being 4 stroke engines the crankshaft and piston assembly makes 2 full revolutions and the camshaft ( controlling the valves ) makes one revolution, so the camshaft is geared to turn at half the revs per minute (rpm ). It therefore takes 2 revolutions to make the complete the 4 strokes needed for a complete cycle. With this being said the piston gets to TDC twice to complete this cycle At the TDC of one of the cycles both valves are closed briefly so that the piston does not hit them , the exhast valve is closing and the intake valve is about to open. If you set the valves at this TDC then the valves will usually be very loose. The next TDC is when both valves have been closed for a longer period of time so that the air in the cylinder can be compressed and ignited by the spark plug . It is at this TDC that you should set the valves. If you watch the valve action while turning the engine you will see a time when the exhast valve is closing and almost immediately the intake valve starts to open ( don't set the valves here ) When the intake valve finishes closing then the piston is about to head back up to TDC, When it reaches TDC this is the time to set the valves. As a confirmation you can put your thumb or finger over the spark plug hole and actually feel the air in the cylinder getting compressed. I hope this helps. |
|
|
02-08-2019, 09:34 PM | #55 | |
Join Date: Jan 2019
Posts: 10
|
Quote:
|
|
|
02-09-2019, 12:00 AM | #56 |
Join Date: Jan 2019
Location: Silver City New Mexico
Posts: 290
|
It is my pleasure. Although setting the valves is a very good thing to do and check occasionally i do believe from your description of the way the bike runs plus the many posts on this forum your bike sounds like a textbook case of running too lean. Try to get a bigger jet in your stock carb and put a spacer under the needle to lift it up relative to the jet and emulsion tube it is sitting in (this makes the 1/3 ro 3/4 throttle position a little richer or fit the aftermarket one and start with a 105 jet and the needle clip in the center position adjust to suit.
|
|
02-11-2019, 04:23 AM | #58 |
Join Date: Jun 2016
Location: Hell
Posts: 2,408
|
I sell a tool set with gaskets for the job and I believe it’s a worthy product to have in your tool set
Self plug yeah ok but take a look n decide your self https://rover.ebay.com/rover/0/0/0?m...2F303052643011 |
|
02-11-2019, 05:58 AM | #59 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
|
Quote:
This is why I keep it even simpler and just say to watch for the intake valve to open, and then the next TDC mark on the flywheel will be TDC on the compression stroke.
__________________
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 |
|
|
02-11-2019, 02:08 PM | #60 | |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
|
Quote:
|
|
|
|
|
|
|