Honda-SOHC
SOHC.co.uk Forums => Other Bikes => Topic started by: RGP750 on May 21, 2019, 06:26:16 PM
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Hi All
Finally totally finished the 175 with loads of NOS parts including Carbs.
Problem, is starts and runs nicely on tick over on choke ,turn off choke
and the engine splutters and pops and dies when throttle is opened HELP!!!
checked all jets ,fuel supply and played with carb settings all to no avail.
Met Kettle (Mick on here at a jumble on Sunday and he suggested adv and ret, checked and seems ok)
I'm stuck
Rich
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Try putting a rag over the airbox intake as you take off choke, just to see if it improves as it would make it richer and give you more assessment.
In other words, does that make it better or worse?
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Strangely just had this problem on my 2T DT175
Solved by replacing the spark plug.
Just saying.
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Thanks Guys. I'll try after work tomorrow.
New plugs fitted but you never know .
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Silly question but did you check out all of the jets were clear and that they are correct size for your model Rich/ float height is correct Even though carbs are NOS still worth checking.
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Hi Ash
Yes in fact one of the pilot jets was blocked.
THe only other thing i can't find an answer for is which groove the needle should be in ,
looks to be on the bottom groove, normally the middle i thought????
That will make it richer so why die when choke off ??
Cheers
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Hi Ash
Yes in fact one of the pilot jets was blocked.
THe only other thing i can't find an answer for is which groove the needle should be in ,
looks to be on the bottom groove, normally the middle i thought????
That will make it richer so why die when choke off ??
Cheers
Did you look in here Rich for groove position? (suspect you already have a paper copy though)
https://www.dropbox.com/s/7bt8uqe4m9mjzi7/125-CB175-CL125-CL175%20Shop%20Manual-1971.pdf?dl=0
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Hi Ash
Yes in fact one of the pilot jets was blocked.
THe only other thing i can't find an answer for is which groove the needle should be in ,
looks to be on the bottom groove, normally the middle i thought????
That will make it richer so why die when choke off ??
Cheers
Did you look in here Rich for groove position? (suspect you already have a paper copy though)
https://www.dropbox.com/s/7bt8uqe4m9mjzi7/125-CB175-CL125-CL175%20Shop%20Manual-1971.pdf?dl=0
Another thought .. probably a long shot ::) but they are CB and not CL NOS carbs Rich? as CB's are PW20's and I think CL's are PW22's
Also discussion here:-
https://www.hondatwins.net/forums/41-fuel-supply-carburation/51425-more-carb-tuning-questions-1972-cb175.html