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  1. C

    Won’t Idle with Heavy backfiring

    So I adjusted the valves and now it won’t start unless the throttle is held open a little and when it does start it’ll idle pretty roughly and when trying to rev it bogs down for a few seconds(while backfiring out of the left cylinder) then the rpms will fly up. Could the timing be off? I don’t...
  2. C

    Won’t Idle with Heavy backfiring

    The bike is 1978 SOHC with 17k miles. So I removed the cylinder cover to fix a massive oil leak, after I reinstalled it the bike refused to start unless I held the throttle open and when revving it backfires heavily. Could the rocker arms have fallen out of adjustment? Any advice would be...
  3. C

    Headlights and Clutster Lights

    hey guys, First time posting here. I've had my 1978 XS400 for roughly 4 months and I noticed this morning that I had no headlights or cluster lights. They were working last night and I had nothing today. So I if there is a relay where is it? And what other things could cause this?
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