Friday, August 5, 2011

[Honda-C70] Re: Backfire when slow down then try to accelerate

 

Would the timing suddenly change?

--- In Honda-C70@yahoogroups.com, ndhonk@... wrote:
>
> I believe it has something to do with the timing or the carb fuel.
> Timing not set correctly or lean fuel mix of the carb.
> Details? I would let experts here spreads their wisdom words :)
>
> Anis
> Sent from my BlackBerry® Style
>
> -----Original Message-----
> From: cjzimmerer@...
> Sender: Honda-C70@yahoogroups.com
> Date: Wed, 03 Aug 2011 18:05:32
> To: <Honda-C70@yahoogroups.com>
> Reply-To: Honda-C70@yahoogroups.com
> Subject: [Honda-C70] Backfire when slow down then try to accelerate
>
> I have a 1981 C70
> I runs pretty well over-all except when I slow down and then try to accelerate it will backfire and "load up" til rpm's get going again. If I downshift, all is fine. Didn't used to do this. I changed the spark plug and I thought that solved it but seemed to be ok for just awhile then back again. I thought possibly I might run some of the sta-bil gas stuff thru it but haven't yet.
> One more thing, I don't drive more than a mile or so, usually at a time and the starter won't start although it used to before I bought new battery. Maybe i got bad battery? I have a small 6v charger that I've left on it and the most i ever get is a short 1/2 second try to start. It starts fine with kick starter - usually first time so that's what I have done. Mainly like to fix the backfiring.
>
>
>
>
> [Non-text portions of this message have been removed]
>

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C70 Passport Not Running Right?
1970-73 C70 Honda Service Manual: http://tinyurl.com/6ebwtw
1970-73 C70 Troubleshooting Guide:
http://tinyurl.com/6ebwtw (scroll to sec.7.1 page 101.jpg)
1980-83 C70 Honda Service Manual: http://tinyurl.com/hu42c
1980-81 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec.18-1 page 170.jpg)
1982-83 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec. 20-28 page 205.jpg)

1980-81 C70 Maintenance Schedule: http://tinyurl.com/z4zn6
1982-83 C70 Maintenance Schedule: http://tinyurl.com/hw35c

More resources for C70 Passports and Cubs:
http://www.shlaes.com/Vehicles/Scooter.htm
http://www.velodrome.com/HondaC70/HondaC70.html
.

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