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Vintage Honda Owners,
Restorers, Riders and
Admirers

Slow return to tickover

Fuel System: Gas (Petrol) tanks, Carburators
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hefyjefy
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Posts: 33
Joined: Mon Dec 16, 2013 12:33 am
Location: California Central Coast

Slow return to tickover

Post by hefyjefy » Thu May 26, 2022 3:53 pm

Bike is 1964 CB77Superhawk, this problem has always been lurking in the background but seems to got worse.
If I rev the engine it takes several seconds (like 7 or 8) to return to tickover. I have checked the throttle cables, looking into the intakes I can see that both throttle slides have snapped back to the tickover position.
I did a compression test today, the left cylinder is definitely a little low (like 15 psi) compared to the right. Might this cause the problem?
Many thanks,
Geoff

Geoff Hastings
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Joined: Wed Feb 22, 2017 2:59 pm
Location: Epsom, Surrey

Re: Slow return to tickover

Post by Geoff Hastings » Fri Jun 10, 2022 6:42 am

The lower compression is unlikely to be the problem, if you definitely have some slack in the throttle cables, then an air leak in the inlet manifold or carb joints is the most probable cause. When the bike is idling try spraying some WD40 or similar around any joints to see if there is any reaction.

hefyjefy
honda305.com Member
Posts: 33
Joined: Mon Dec 16, 2013 12:33 am
Location: California Central Coast

Re: Slow return to tickover

Post by hefyjefy » Sat Jun 11, 2022 12:47 pm

Thanks for the input, after some further investigation this turned out to be a side effect of the ignition timing being off.
I think because the ignition timing was off (retarded) I had tweaked the carb setting to get it to tick-over at a reasonable speed.
After re-timing the ignition I needed to make further adjustments to the carb setting, when that was done everything is MUCH better!

"Its hardly ever the carburetor its almost always the ignition" ~ my Dad, bless him, c1954

Geoff

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Tim Allman
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Joined: Tue Dec 02, 2014 9:25 am
Location: Guelph, Ontario, Canada

Re: Slow return to tickover

Post by Tim Allman » Mon Jun 13, 2022 5:13 pm

I give up. What does tickover mean?

Geoff Hastings
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Posts: 309
Joined: Wed Feb 22, 2017 2:59 pm
Location: Epsom, Surrey

Re: Slow return to tickover

Post by Geoff Hastings » Thu Jun 16, 2022 10:00 am

Tim Allman


Tick over= idling
Footrests = foot pegs
Silencer= muffler
Postage= extortion
Shipping= double the price

Anything else I can help you with Tim

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Muddy
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Joined: Wed Mar 30, 2011 11:03 pm
Location: Sunshine Coast, QLD, Australia

Re: Slow return to tickover

Post by Muddy » Thu Jun 16, 2022 2:54 pm

Been a while since I've been on this site, but this gave me a laugh.
Thanks.

Regards

Muddy

'64 C72

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Tim Allman
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Posts: 361
Joined: Tue Dec 02, 2014 9:25 am
Location: Guelph, Ontario, Canada

Re: Slow return to tickover

Post by Tim Allman » Wed Jun 22, 2022 9:37 am

And you guys claim to speak English! ;-)

As for the reluctance to 'tick over', I have experienced this myself. Well, my bike has. In one case it was a sticky throttle cable and in another the ignition timing was off. My suggestion is to check everything in the fuel and ignition systems, essentially doing a major tune-up.

Meanwhile, I think I'll put on my toque and running shoes, pack a toof from the LCBO and paddle my 15' Prospector to Joe Batt's Arm, avoiding the muskeg along the way.

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