rough idle misfire when hot

[mike042]

hi again all. thanks a lot for great replies on my led question great group here will definetly be joining perm. but now i have problem. this is my first older bike so im not very sure of the mechanics but love the bike 1983 venture!! got it a month ago was idleing hard had a yamaha dealer fix he rebuilt carbs and changed plugs. ran great for 200 miles. then last night went for little cruise and ran very hot started dogging out from standing start offs got home noticed clicking from right rear cylinder the spark was jumping from plug boots to motor . to hot and dark to look at it . i dont think he canged plug wires do you think its just that or something worse? or i guess these are the put together yourself wires do you think it just came apart at the boot? thanks again all

[reddevilmedic]

i purchased these wires from ebay, great product. pretty easy to install. i stayed with ngk plugs too. i just upgraded the fusebox also. makes a bix difference. http://cgi.ebay.com/ebaymotors/Yamaha-Venture-XVZ12-Spark-Plug-Wires-Red-XVZ1200-/390319800412?pt=Motorcycles_Parts_Accessories&hash=item5ae0df805c

[dingy]

This is an ebay item # for a set of 8mm wires.

 

# 160606108106

Vendor ID spiritusantu

 

They will fit in place of the stock 7mm wires. I had them on my bike all last year.

 

Gary

[bkuhr]

Mike, these plug caps have resistors inside them. They can be taken apart to inspect the resistors, but if very corroded would recomend to replace the caps. Found some at a non yami mc repair shop for less then $3 each.

[mike042]

thanks for great info !! just looked at the wires and the one sparking just poped out of cap in my fingers ok but how the **** do the caps come off are they screwed on to plugs ? cause the ones on there are angled at top and cant turn them off they hit sides of motor they feel like a hard plastic so do i just get pliers in there and unscrew them if they are screw on will replace with straight ones but dont want to break these for now as i might have to ride it to shop ( no trailer)

[Yammer Dan]

They pull off the plug. Be carefull with them. I wouldn't use pliers. You can take them apart to clean them just be carefull of little parts in them. Flat screwdriver in hole where they fit on plug. Don't remember right now how they come off wire but if you get them off the wire snip a small piece off the end to clean up connection there. If you have very small hands you can change coil end without pulling anything. Pay attention to how collar works to hold them in when putting back. Better to do the E-Bay set. Yours are probally 26 years old.

[mike042]

yahoo thank you very much people!! thanks yammer dan they did pop right off cleaned it there is a screw type pin u screw into middle of wire the wire was barely hanging on to it when i took off put back together and seems ill be able to ride while i wait for new set of wires thanks again and ill be a permanet member here shortly!!! and will be bothering all you again im sure haha love these old bike now and want to make this one a brand new/old bike by end of summer:cool10: thanks again