Page 1 of 3 1 2 3 LastLast
Results 1 to 10 of 26
  1. #1
    thompsdw's Avatar
    Join Date
    Sep 2007
    Location
    Richmond, VA
    Posts
    880
    +1
    1

    Maiden voyage after rebuild didn't go very well

    Took the 04 RXP out today for the first time after the rebuild. Idles fine with no codes. After acceleration the check engine light comes on after throttle is applied. There are no codes stored. I didn't make it more than 50 yards but decided to trailer it versus taking any risk. The only other thing that happened that was out of the ordinary was a single "dull pop" from the engine compartment when I first accelerated. It did not repeat as I came back to the dock. It sounded like a dull backfire without repeat. Oil at normal level with no signs of water. Coolant is at normal level with no unusual issues. All hoses still in place with no issues. Check engine clears at low rpm and does not come on until rpms increases.

    Any ideas? What should I check next? I'm really bummed after a 2 year rebuild (I'm slow).


  2. #2
    Sturm215's Avatar
    Join Date
    May 2010
    Location
    Lakeland florida
    Posts
    1,893
    +1
    64
    compression check.

  3. #3
    thompsdw's Avatar
    Join Date
    Sep 2007
    Location
    Richmond, VA
    Posts
    880
    +1
    1
    1 - 135, 2 - 135, 3 - 150. Just remember that there is no way the rings are set. I quit way too soon.

    Btw - charger is working fine. What can cause check engine without codes?

    Btw - I accidentally put 10 gals of normal octane and later added 5 gallons of premium. But no knock sensor codes. Knock sensor harness in place.

  4. #4
    Mtuned's Avatar
    Join Date
    Aug 2010
    Location
    Orlando FL
    Posts
    724
    Sounds like engine timing

  5. #5
    thompsdw's Avatar
    Join Date
    Sep 2007
    Location
    Richmond, VA
    Posts
    880
    +1
    1
    Well it appeared to be on the money, but i guess that is possible. Wouldn't it run poorly over the entire rpm range?

    Just to be clear, it runs/idles fine. Not rough at all.

  6. #6
    Banned User
    Join Date
    Dec 2006
    Location
    Crest Hill, IL
    Posts
    9,512
    +1
    215
    Did it go into limp mode? Check your oil pressure sensor and green temp sensor on the front of the motor...You might have the lines crossed...I did that years ago when I swapped a motor to a new hull...The oil sensor has the one with 1 cable, since the block is ground...Just a thought...

  7. #7
    thompsdw's Avatar
    Join Date
    Sep 2007
    Location
    Richmond, VA
    Posts
    880
    +1
    1
    I don't think so, but to be honest I did not push it at all. I did check all of the electrical wire colors on the engine front that could be interchanged.

  8. #8
    rxpsquad's Avatar
    Join Date
    Dec 2010
    Location
    birmingham UK
    Posts
    173
    Hi could you possibly have an intercooler
    Leak I had same problem
    Would run fine at low revs but still a bit rubbish on
    Acceleration
    But when you open it up the check engine comes up
    But no codes
    Take the intercooler out and pressure test it
    The last thing you want is water going into the head
    And corroding your valves
    You still might not find any water in your oil just yet
    I ran mine for 3days till I figured out the problem

  9. #9
    thompsdw's Avatar
    Join Date
    Sep 2007
    Location
    Richmond, VA
    Posts
    880
    +1
    1
    I did a complete pressure test on the intercooler before installation. It has maybe 10 minutes run time at the most, but I guess it is still possible. Danny, I checked that very carefully because those plugs can be interchanged. I also wouldn't think that would be throttle dependant. Any other ideas guys?

  10. #10
    thompsdw's Avatar
    Join Date
    Sep 2007
    Location
    Richmond, VA
    Posts
    880
    +1
    1
    Quote Originally Posted by Mtuned View Post
    Sounds like engine timing
    I assume you are making that comment based on the dull backfire? The strange thing is that it did not repeat and ran fine. I am wondering if that is just a signature of several on hose runs and putting too much fuel in the cylinders.

Page 1 of 3 1 2 3 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. yamaha gp800r won't go passed 4000rpm after rebuild
    By wavejunky22 in forum Yamaha PWC Performance (2-stroke)
    Replies: 4
    Last Post: 04-02-2014, 07:01 PM
  2. BULLRAIDER, whats the word on the maiden voyage?
    By 97GPSLEEPER in forum Yamaha Old School Skis
    Replies: 16
    Last Post: 06-03-2007, 02:13 PM
  3. Maiden Voyage ! I love this ski !
    By MrSxy4Ever in forum Kawasaki PWC Performance (4-stroke)
    Replies: 13
    Last Post: 04-23-2007, 01:13 PM
  4. Project 15F Maiden Voyage
    By 785xp in forum Kawasaki PWC Performance (4-stroke)
    Replies: 0
    Last Post: 04-21-2007, 03:56 PM
  5. I took the maiden voyage on the Green Hulk
    By Green Hulk in forum 4-Tec Performance
    Replies: 48
    Last Post: 05-16-2006, 08:59 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •