Motorcycle Repair: 1979 honda twinstar (185), auto parts store, simple tests


Question
-------------------------
Followup To
Question -
My wife has a Honda twinstar 185 I'm looking for someone who can repair it, Not sure what is wrong
with it I put a carb and plugs, Has been setting for a long time if you know someone around Columbus, Let me know she wants to ride this summer.  
Answer -
Hi Herb.
 If you wanted to fix it yourself, I could direct you as to what could be wrong with it and what steps would be the best possible solutions.  I would need the symptoms for that, though.

As far as finding a mechanic in your local area, I cannot help you with that.

Here's what you want to do to find the right mechanic.  Talk to other riders that own older and classic era Honda's. Ask questions about who they like and don't like.  Talk to the different shops and see what they think about working on bikes that old.  Do it in person and read the body language of the mechanics that yu talk to.  You will see which ones really want to fix the problem and which ones just want the bike to take you for a ride.
 If you come across a shop where the mechanic is working on foreign bikes and doesn't like them at all, stay away from that shop.

Good luck.
FALCON



I would like to fix it myself i don't have the gages
to check the elec pats out,
This is what its doing after I put the carb on and got the gas from pouring out the over flow hose, I put new plugs in I try to start it and all it will do is turn over no spark! Maybe I'm doing something wrong never worked on these kind of bikes before can you help?  

Answer
Hi Herb.
 Well there are a couple of simple tests to see if the problem is spark or fuel.  If the carbs have been completely and properly cleaned (i.e. disassembled, cleaned, reassembled), then the problem is like not fuel.

Either way, get some automotive start fluid (available at any auto parts store) and spray it into the intake immediately prior to starting the bike.  It should fire up and die out.  If it does, then the problem is fuel system related.  Could be junk or 'varnish' in the carbs or it could be water in the fuel.

If it fails to fire at all, then the problem is most likely electrical.  You will need a multimeter and the repair manual to be able to test the electrical system and components.

1)  Check the wiring from power to ignition switch, from switch to ignition system and from power to ignition system for obvious breaks, shorts or spots where it is or could likely ground out.  Then use the multimeter to see if there are hidden shorts anywhere.

2) Check the ignition system components against the specs in the manual.  If they do not match, then you need to replace the ones that are outside of spec ranges.  Also check to see if power is getting from the coils to the plugs.  Shorted spark plug wires can prevent the bike from firing or running right.

3) If you have a compression guage, then use it to see that you are getting good compression in the cylinders.

4) Check the valve timing and gap.

Start with those and let me know what you find.

Good luck.
FALCON