honda305 Home honda305 Auctions honda305 Gallery honda305 Forum


honda305.com Forum

Login
□ Search
□ FAQ 
□ 
Vintage Honda Owners,
Restorers, Riders and
Admirers

FUEL FLOW PROBLEM WITH CL160

CB160, CB350, CB360, CB450
Post Reply
FAST FRED
honda305.com Member
Posts: 166
Joined: Tue Oct 14, 2008 10:30 pm
Location: SACRAMENTO, CA

FUEL FLOW PROBLEM WITH CL160

Post by FAST FRED » Sun Mar 18, 2012 9:21 pm

Does anyone know the majic word to chant while trying to get fuel to flow on my friends CL160D. Carbs and petcock were ultra-sonicly cleaned and fresh rebuild with Keyster kits ( I used the original Honda brass jets). Fuel flows from the petcock to the csrbs OK and with the float bowls off but with the float bowls on nothing. I trimed the gaskets and the float seems free. Could it be a bubble in the lines or something simple I have overlooked. Float level is set at about 20mm.

Fast Fred
65 CL77
66 CL77
76 CB550FKR
76 CT90

Goodysnap
honda305.com Member
Posts: 456
Joined: Mon Oct 06, 2008 7:25 pm
Location: Lansing , Michigan

Post by Goodysnap » Mon Mar 19, 2012 7:56 pm

Bowl Vents Plugged? Its the only thing you didn't mention allready.
64' CB77
65' CB160

User avatar
davomoto
honda305.com Member
Posts: 2508
Joined: Sat Nov 18, 2006 7:36 pm
Location: Marin County CA

Post by davomoto » Mon Mar 19, 2012 8:06 pm

Float level? Mabe they're closing off the needle when bowls are installed.

Davo

rrietman
honda305.com Member
Posts: 561
Joined: Mon Oct 13, 2008 6:45 pm
Location: bellingham wa.

Post by rrietman » Mon Mar 19, 2012 9:57 pm

I have had this happen on 160's (CL & CB) a few times. the float chamber vents are inadequate. make sure they are REALLY clean. I think the issue on these bikes is the relative level of the fuel tap to the needle valves (very close--- so not much gravity) I think over long fuel lines or inline filters can aggrevate this problem.
Good luck
Randy

metrorollah
honda305.com Member
Posts: 11
Joined: Sun Apr 15, 2012 4:54 pm
Location: United States

Post by metrorollah » Sun Jul 15, 2012 11:06 pm

My product provides a good solution:

http://www.ebay.com/itm/271018122754
rrietman wrote:I have had this happen on 160's (CL & CB) a few times. the float chamber vents are inadequate. make sure they are REALLY clean. I think the issue on these bikes is the relative level of the fuel tap to the needle valves (very close--- so not much gravity) I think over long fuel lines or inline filters can aggrevate this problem.
Good luck
Randy
Attachments
*
*

User avatar
Snakeoil
honda305.com Member
Posts: 1150
Joined: Wed Aug 04, 2010 6:45 pm
Location: Upstate NY

Post by Snakeoil » Mon Jul 16, 2012 8:51 am

Petcock being close to the level of the carbs is not relevant to flow. The height of the fuel level in the tank determines the head pressure.

Now if you only put a small amount of fuel in the tank the level is very low and hence not much head.

I would tend to agree that the vents are plugged, ultra-sonic cleaning or not. I just finished cleaning the carbs on my CB160 and I had to use a fine needle to get the hard deposits out of the pilot jets. There were other old fuel deposits that carb cleaner would not move. It had to be manually brushed out.

regards,
Rob

Post Reply




 

CB-77 | CYP-77 | Road Test | Riding Log | Literature | Zen | Marketplace | VJ Survey | Links | Home