1. Some members were not receiving emails sent from XJbikes.com. For example: "Forgot your password?" function to reset your password would not send email to some members. I believe this has been resolved now. Please use "Contact Us" form (see page footer link) if you still have email issues. SnoSheriff

    Hello Guest. You have limited privileges and you can't "SEARCH" the forums. Please "Log In" or "Sign Up" for additional functionality. Click HERE to proceed.

engine noise

Discussion in 'XJ Technical Chat' started by bossone60, Jun 20, 2011.

  1. bossone60

    bossone60 Member

    Messages:
    74
    Likes Received:
    0
    Trophy Points:
    6
    i have xj750 seca the motor seems to make alot of noise after warming up is this normal or should i use heaver oil
     
    bossone60, Jun 20, 2011
    #1
  2. mlew

    mlew Well-Known Member

    Messages:
    3,090
    Likes Received:
    241
    Trophy Points:
    63
    Location:
    Apex, NC
    Depends on the noise, could be a major problem or noisy valves. Since you indicate its only noisy after the engine is warm I suspect you need to check valve clearences. The first thing is to check the valve adjustment. Changing oil is not a solution for engine noise.
     
    mlew, Jun 20, 2011
    #2
  3. parts

    parts Member

    Messages:
    834
    Likes Received:
    0
    Trophy Points:
    16
    Location:
    prescott valley az
    You need to define that a little.

    Engines can make all kinds of noise for many reasons.

    Xj motors are noisy by nature. You SHOULD hear the tic from
    the cam lobes as they work over the shims.

    Also, there is a distinct "whine" as well.

    If the small rubber "absorbers" are missing from the motors
    fins then you might get a buzzing sound.
     
    parts, Jun 20, 2011
    #3
  4. parts

    parts Member

    Messages:
    834
    Likes Received:
    0
    Trophy Points:
    16
    Location:
    prescott valley az
    oops!
     
    parts, Jun 20, 2011
    #4
  5. waldo

    waldo Member

    Messages:
    871
    Likes Received:
    1
    Trophy Points:
    18
    Location:
    San Jose, Ca. 95125
    What oil do you have in there now? How many miles on the bike what year is it. Maintenance up to date?
     
    waldo, Jun 20, 2011
    #5
  6. bossone60

    bossone60 Member

    Messages:
    74
    Likes Received:
    0
    Trophy Points:
    6
    16,000 miles maint. up to date 81 xj750 seca just ticks little more than i am used to may be valves
     
    bossone60, Jun 21, 2011
    #6
  7. KrS14

    KrS14 Active Member

    Messages:
    1,642
    Likes Received:
    9
    Trophy Points:
    38
    Location:
    St Marys, Ontario
    Ya if you're not used to it, you could take the normal valve ticking to be an issue. But on these bikes, you LIKE to hear the valves :) Reminds me of a chorus of frogs singing :)
     
    KrS14, Jun 22, 2011
    #7
  8. wamaxim

    wamaxim Active Member

    Messages:
    1,215
    Likes Received:
    2
    Trophy Points:
    36
    Location:
    Vancouver, USA
    If it's a new noise it just might be an exhaust leak. They often present as a ticking noise. Check where the headers bolt into the exhaust manifold using a 2' length of hose. If you use a smaller diameter hose (1/4 to 3/8") you should be able to snake it in around the collector and along the full length of the exhaust. If this is it it should be very noticeable when you get to the leak.

    Loren
     
    wamaxim, Jun 22, 2011
    #8

Share This Page