Originally Posted by fergy
Could the tapping be an air leak that you're hearing and not a tapping at all? Vacuum leaks can cause eratic idle, and sometimes vacuum leaks make strange noises.
I checked all the vacuum lines all good.
Now for the good news. This morning I went checked the air/fuel screw, set it to 2 and quarter turns. Still had the tap.
Then went to walmart and picked up some rotella synthetic and a oil filter. Changed the oil and filter, took it for a drive, and now I don't hear the tap...hmmm.
Now for an odd question. Per the yahoo groups tech page I used the walmart supertech st7317 oil filter. It spins on great and has a good seal, but the diameter is a bit smaller than the old filter that was on it (a fram). Now while reading The Vulcan Verses here, they say its ok.
WHAT'S THE DEAL WITH THE EARLIER AND LATER FILTERS ?
The filter for the later models (95 and up) is a smaller diameter and shorter. The only difference is the physical size. It will work fine on the older models. Mating surface identical. If you have the room, I recommend the longer filters. Honda did the same thing with their filters (same filters as Kaw uses). The large filter is specified for the earlier years, and the smaller one is specified for the later years. The smaller one is used on Gold Wings and sport bikes due to space limitations under the plastic. Some dealers only stock the small one and say it has replaced the large one
I just want to make sure I'm not going to screw up my bike. I did take it on a test drive and no oil leaks at all. Before I go on a trip tomorrow can someone verify I am ok? If not, which filter should I get (preferably from the auto store since I live close to one). Mine is the older filter type, its a 93 vulcan 750.
Now for the last question. When I cleaned my carbs last weekend, some of my coolant did drain out while taking off the hoses to get to the carbs. AFter that my coolant gauge quite working. The yellow wire to the thermostat is attached and in good condition... Any clues on what I did?