Help, I've got a 1998 Suzuki DT150. Runs great for the 1st 25/35 minutes. Up on a plane, 22/24 MPH @ approx. 3.2K RPM. Than it just Bogs down, RPM drops to about 2K. If you give it more gas, it doesn't help. Engine just struggling at 2k. If you back off the throttle, back to "Neutral". Than put engine back in gear, Zoom it takes off runs normally again. Back up on a plane, 22/24 MPH @ 3.2K RPM. But it only last 5/10 minutes before it fails again. Same Symptom, Engine bogs down to about 2K. Thought it might be a Fuel Issue. I've eliminated the Boats Tank & Fuel lines, by running the Boat on an external tank. Same failure. I've changed the Boats Spark Plugs & Fuel Filter. I've been told 2 different stories about the DT 150. The Engine has multiple Fuel filters or just 1. I only found 1, 2 fuel pumps but only 1 Filter.
