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bogging
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  1. General 660 Discussion
    I have to start with this because I suspect this may be part of the problem, unfortunately it has an eBay carb:( the carb is clean though and I’ve messed with the air fuel ratio screws and cleaned up the problem a little bit. The problem is when I get on the gas hard it stumbles at the low rpms...
  2. YFZ 450
    so i just picked up a 50th anniversary yfz450 and i when i turn it on it cranks and runs but when i rev it, it backfires and sputs and when I'm driving it it revs and drives but then on low rpm it tends to bog out and almost stall. only idles with choke on but obviously revs really high idles...
  3. Fuel Injection Tuning
    I recently got a new big gun dual exhaust, put on and ran great for a day. next day took her for a ride and at the end of my ride there was a slight bog in 3rd gear revving at 6-7k rpms from going up a hill. quickly went back to my trailer because i knew something wasn't right. i let her idol...
  4. General 660 Discussion
    Ok, 04 Raptor that didn't run. Replaced main switch, got power, replaced all fluids, ran like shit and backfired like a machine gun. Didn't get over 5mph. Tore the engine apart, discovered broken exhaust valve spring. Replaced it. Adjusted the valves, etc. Got it all back together. Now it...
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