honda305 Home honda305 Auctions honda305 Gallery honda305 Forum


honda305.com Forum

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

ca77 misfire under load at high rpm.

Points Based Ignition | Electronic Ignition Upgrade
Post Reply
win1906
honda305.com Member
Posts: 14
Joined: Sat Dec 24, 2016 9:51 am
Location: altona,ny

ca77 misfire under load at high rpm.

Post by win1906 » Wed May 17, 2017 6:34 pm

my 67 dream misfires under load at higher rpm.it starts and runs good at idle and revs up fine.but going down the road it misses at higher rpm.it will start doing it in 3rd and stop when i shift into fourth.and start doing it again when the rpm gets higher.i have set the timing and replaced the coil with another one,still does it.i am going to double check the points gap valve gap and cam chain adjustment again when it cools down.i am thinking its a ignition problem and not a carb problem but i dont know.any suggestions i would be willing to try.thanks guys.

User avatar
Rizingson
honda305.com Member
Posts: 57
Joined: Mon May 07, 2012 6:50 pm
Location: Parker, CO USA

Post by Rizingson » Thu May 18, 2017 7:41 am

Replace or at the very least clean your points. Its the most common problem with underload missing at higher rpm's. Of course reset the gap per spec.

Billiam
honda305.com Member
Posts: 50
Joined: Tue Sep 06, 2016 2:48 am
Location: Berkshire UK

Post by Billiam » Sun May 21, 2017 1:40 pm

I'm in the same boat Win1906. She even started while I was finding compression with the kickstart. Warms up quick. Ticks over like a watch. Revs out a treat untiil like yours you put the hammer down then she starts cutting and lurching. Stop for a few moments at the lights and shes ok again till you load it up. Done all the carb/ignition timing/points etc. even raised the needles a notch. Plugs look the same - clean slightly pinkish. So frustrating.
Might try a set of pattern coils as a way of elimination.
Where can I buy new points in UK. Don't say David Silver, none listed.

DCheney
honda305.com Member
Posts: 5
Joined: Wed Apr 02, 2014 11:37 pm
Location: Greenville, TX

I'm having the same issue on my 67 Dream

Post by DCheney » Mon Aug 14, 2017 10:31 pm

Once I hit the tiger register, it starts bogging and putting out... I can feather the throttle to keep it rising, but this issue is killing me. Can anyone help?!?!? An old-timer told me to check my mufflers, said a mud robber nest could cause such an issue... Thoughts, or has anyone fixed their issues...?

e3steve
h305 Moderator
Posts: 2601
Joined: Fri Oct 31, 2003 1:38 pm
Location: Mallorca, Spain & Warsash, UK

Post by e3steve » Tue Aug 15, 2017 4:43 pm

Just been trawling this thread. Three things immediately spring to mind, in the following order:

1. Condenser
2. Lean mixture at WOT
3. Valve clearances

Post Reply




 

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