Hard to start when warm ('81 CB900C)
I had an old wet battery die this winter. It wouldn't hold a charge, so I swapped it for a better battery from another old bike I have. Since the first day I started the CB900C this spring the bike does not want to start when warm. Choked, not choked, whatever. It sounds like the starter is cranking fine but won't fire. Of course, in the past my '80 GS750L would sound like it was cranking fine, but wouldn't start until I put a jumper on it (warm or cold). That's the bike the replacement battery came out of. Different but related issue I think.
At any rate, the original bad battery from the CB seems to have a lot of JUNK in the bottom, so I think I'll spring for a premium maintenance free battery instead of trying to refurbish this one. Any arguments against this?
Disregarding the GS for now, do you think a new - hard cranking battery will fix my problem with the Honda?
Other Info on this CB900C: I've changed the oil/filter, both tires, and cleaned my K&N air filter and airbox this spring. I'm on my 4th tank of premium gas. The first 3 tanks were heavy with Seafoam like I do every spring. I've been finding hills and roll-starting when necessary. I have a 90 mile round trip commute. This Honda CB900C was a great bike last year (bought it Jun 09) and it ran flawlessly last spring.
I've put 6k on it since I got it. It had a fresh tune then... I guess I'll need to tighten my camchain and check valve clearance too... could this have something to do with it?
My problems are similar, but not the same as another thread, but I can't post a link. I've used the search function in this forum and manually browsed 15 pages deep to try and find the solution before bothering you all.
I'm digging this forum. Ride safe.