Hi all, as usual I have been follow the forum for a while but am only now getting around to saying hi because I need some help so for this I apologise...
I have been experiencing intermittent problems with my Yamaha Virago XV250S for about the last 6 weeks now. The first thing to go was the battery. After a particularly cold weekend the bike refused to start on the Monday morning and the battery died. Once the AA had arrived the very helpful man had a little look over the bike and pointed out that the chain was way to loose. He showed me what I needed to do to adjust this and after he replaced the battery he went on his way. The following weekend I had a go at adjusting the chain, which I could only get either too tight or too loose. I made small adjustments over the next few weekends to enable me to continue to commute into work without it coming off and killing me. Anyway, over the past two weeks the bike has been intermittently losing power! In low to mid-range revs it would feel almost like something was blocked? The engine sounded relatively normal but none of the power was getting to the back wheel.
So I took it into my local garage who quoted me £150 to replace the chain and sprockets. I managed to source my own chain and sprockets from wemoto which reduced the bill to £50 labour plus parts supplied by me (£68). I also explained the power loss issue I was experiencing and they suggested a full service at an additional £150. I don't think the bike needs a full service as oil etc. looks fine. When they were fitting the new chain they checked the spark plugs for me which were knackered so they replaced them, checked over the rest of the bike which they said was all fine and sent me on my way.
For 15 miles or so the bike felt better than ever. Nice and smooth thanks to the new chain and sprocket and power delivered nicely. However after 15 miles or so the power loss returned, albeit not as badly as before. I was nearly at my place of work so once in the car park; I left the bike running for a few minutes whilst I starred at it intently. After the bike settled it started to idle pretty slowly. Whilst holding the bike vertically I could hear and feel the bike (presumably from the spark plugs?) sort of popping as if they were sparking but not holding. I revved the bike a little and it returned to normal.
So my question is, am I slowly running the bike into the ground? it is my first and i have owned it since passing my test in July of this year. it is a V reg (1999) 250 with just under 16,000 on the clock, 3,000 of which are mine. I do about 30 miles a day commuting into central London.
Any helpful suggestions or comments welcome! Sorry about the essay and if this is in the wrong place.