Chris
First lets ask why did it sit for 20 years?
Was it running when parked, did it die thus 20 years????
OK suck and blow is fine but does the flywheel reach TDC with the piston at TDC
and are the valve rocker arms loose??? Take a piencle or small dia wooden dowl
in the sparkplug hole, slowlly turn the engine feeling the dowl (so you do not break it off)
You should feel the piston come up and stop for a few degrees of crankshaft rotation and then go down. Is the TDC line in the hole in the left cover? Remove the valve adjuster caps
and feel for slight play in the rockerarms (both) if not both, turn the engine 1 complete rotation and recheck. This is a down and dirty check but it will tell you if you have
the flywheel and cam in time.
If the timing checks out, then it is ignition. Remember spark in free air does not
mean you will have spark in compression. First things first try a new plug.
Then it is down to cleaning electrical connections, do not forget the coil mount to frame
for corrosion. It does have the correct coil for the CDI ignition, correct???
Good luck
Bill
Portland OR
--- On Thu, 6/23/11, knytewolf1974 <knytewolf1974@yahoo.com> wrote:
From: knytewolf1974 <knytewolf1974@yahoo.com>
Subject: [Honda-C70] Why won't it start? What am I missing? Please help.
To: Honda-C70@yahoogroups.com
Date: Thursday, June 23, 2011, 11:52 AM
I am trying to ressurect an 83 that has not been running for almost 20 years. I put in a new battery, changed the oil and put in a new spark plug. I also relined the gas tank and put on new hoses. I also installed the carb from my other running 83. I checked for spark and I am getting spark to the plug, I am also assuming that fuel is not a problem since I swapped out the carb and have new hoses attached to the freshly lined tank. When I press the starter button I feel suction from the intake and air blowing out from the exhaust so I don't see compression as an issue? What else could I be missing? Any help would be greatly appreciated!
Thank you,
Chris
[Non-text portions of this message have been removed]
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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