Wednesday, August 3, 2011

RE: [Honda-C70] Re: Air blowing out of carb, not sucking in

Mike or Bill : Could a non working cam chain tensioner & a lot of slack in the cam chain throw Jill`s timing off ? I ask because my 81 will not self adjust the cam chain slack ever since I down shifted & bent a valve in 84 ,but I can manually adjust by turning the tensioner rod in or out . Baby Huey

To: Honda-C70@yahoogroups.com
From: mgladu@mindspring.com
Date: Wed, 3 Aug 2011 20:43:02 -0500
Subject: Re: [Honda-C70] Re: Air blowing out of carb, not sucking in


On Aug 3, 2011, at 5:58 PM, "Jill" <jillvee@yahoo.com> wrote:

> I actually fabricated my S65 to fit a C 70 carb so i have the right
> carb, but YES, i have all the right rods and pistons and everything
> right that. I think i'm pretty sure it's a timing issue. I set the
> rough time, with the fly wheel and cam sprocket, but can i set it a
> more precise way?
>

Until you let us how far off you are, I'm hesitant to suggest this as
a solution.

Have you replaced the cam chain?

I would put a new one on before I would go to extreme lengths to
adjust cam timing.

If the chain is worn, you could be quite a few degrees off.

Other than a sheared key on the flywheel or a damaged or slotted cam
sprocket - there are no other reasons for cam timing to be off.

Unless you are racing, I don't recommend changing the cam timing.

The problem in almost surely something else...

Mike G.
-

[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

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