1987 1500 vulcan performance problems
#1
1987 1500 vulcan performance problems
Hi,
I have a 1987 Vulcan with about 8,000 miles on it. About three months ago I had the carburetors rebuilt, and I changed all the oils. Now sometimes I smell gas when ridding and when I shut it down. It runs ruff, and smokes a little. I replaced the plugs, and air filters. The right rear plug was a little fouled. All vacuum hoses look good. The battery is fine. All cells are good. Could this be an ignition problem? If so how do I check it?
Thanks
I have a 1987 Vulcan with about 8,000 miles on it. About three months ago I had the carburetors rebuilt, and I changed all the oils. Now sometimes I smell gas when ridding and when I shut it down. It runs ruff, and smokes a little. I replaced the plugs, and air filters. The right rear plug was a little fouled. All vacuum hoses look good. The battery is fine. All cells are good. Could this be an ignition problem? If so how do I check it?
Thanks
#6
Now sometimes I smell gas when ridding and when I shut it down. It runs ruff, and smokes a little. I replaced the plugs, and air filters. The right rear plug was a little fouled. All vacuum hoses look good. The battery is fine. All cells are good.
#9
Ultra low mileage bikes always seem to come with a stack of problems like this. If the bike's sat around unused, and been left with used oil in it, there could be all sorts of nasties lurking in the motor.
If it's smoking when it's warm, is it using oil? Do you do enough miles now to know if it is?
If compression is OK it points toward valve guide wear (not enough miles) or seals. These might have perished with age. Also look for a blocked crankcase breather or even a dirty air filter.
The rebuilt carbs should have been synchronised. It's possible that one of them has a sticking needle valve in the float bowl, or an incorrectly set float height. Is the choke operating correctly?
I assume you've put new plugs in it?
Rob
If it's smoking when it's warm, is it using oil? Do you do enough miles now to know if it is?
If compression is OK it points toward valve guide wear (not enough miles) or seals. These might have perished with age. Also look for a blocked crankcase breather or even a dirty air filter.
The rebuilt carbs should have been synchronised. It's possible that one of them has a sticking needle valve in the float bowl, or an incorrectly set float height. Is the choke operating correctly?
I assume you've put new plugs in it?
Rob
#10
Since you had the carbs rebuilt, sync 'em...
Their out of sync. and the lean carb controls idle while the rich carb dumps too much fuel in the cylinder....
the fix?
Get the carbs syncronized...and dealership will do it for a few bucks...
Their out of sync. and the lean carb controls idle while the rich carb dumps too much fuel in the cylinder....
the fix?
Get the carbs syncronized...and dealership will do it for a few bucks...