yes check for loose connections first. when all else fail, it's time to replace it.
yung samin i bought it from carpower sa pasay rotonda. yun kasi malapit samin (from makati). around 3.5k ang kuha ko. may magkakabit na rin dun. sa casa i was quoted 4.2 to 4.5k. lahat parts for our past and present hondas, i get from carpower...
good luck!