Please note this thread has been inactive for 90 days. For the best results, please start a new thread.
Results 1 to 3 of 3
  1. #1
    Cadet
    Join Date
    May 2002
    Location
    jacksonville fl
    Posts
    5

    Default suzuki drops to 2500 rpms

    went out last weekend with my 16' cape horn have a 2000 70 hp 4 stroke suzuki ran wot for 10 miles did some scalloping and starded back alarm came on temp light also rpms droped to 2500 or so. I stoped turned off engine restarted water stream was fine didnt seem hot went 6 miles or so same thing. new waterpump put in last dec has around 25 or so hours since.

  2. #2
    Admiral
    Join Date
    Aug 2002
    Location
    corpus christi texas
    Posts
    6,872

    Default Re: suzuki drops to 2500 rpms

    check and or change thermostat and inspect water pick-ups for obstructions. Motor dropping back to 2500 r's is part of the failsafe components and is good to hear that it's working

  3. #3
    Petty Officer 1st Class
    Join Date
    Jan 2002
    Location
    Bar Harbor, Maine
    Posts
    351

    Default Re: suzuki drops to 2500 rpms

    Also keep in mind that the ECU can sense a rapid rise in temerature and set the alarm off before the engine actually overheats. It's refered to as a "gradient" temperature alarm. When you get the alarm, shut the engine of and restart it. If the alarm has stopped, then you had a "gradient" alarm. If it happens often than you have a t-stat or pressure relief valve problem. Also, if you're into a lot of seaweed, it can happen.

Similar Threads

  1. 1988 OMC 305 gm will not go over 2500 rpms
    By kicks2 in forum Mercruiser I/O & Inboard Engines & Outdrives
    Replies: 2
    Last Post: July 27th, 2004, 06:09 PM
  2. OMC 305gm STILL will not go over 2500 rpms!
    By kicks2 in forum Mercruiser I/O & Inboard Engines & Outdrives
    Replies: 10
    Last Post: September 17th, 2003, 02:35 PM
  3. OMC 305 GM STILL will not go over 2500 rpms
    By kicks2 in forum Mercruiser I/O & Inboard Engines & Outdrives
    Replies: 2
    Last Post: September 16th, 2003, 09:23 AM
  4. OMC 5L won't go over 2500 rpms
    By kicks2 in forum Mercruiser I/O & Inboard Engines & Outdrives
    Replies: 2
    Last Post: August 31st, 2003, 07:33 PM
  5. rpms drop to 2500
    By dipstop in forum Johnson & Evinrude Outboards
    Replies: 7
    Last Post: August 27th, 2003, 03:34 PM
  1. iboats Forum Directory - Over 100,000 forum posts organized by topic