Null


Pages: [1]

Rogers Hopeful

  • Karma: +4/-0
Exhaust leak or valve noise
« on: April 13, 2013, 12:35:09 PM »
I am getting a clicking noise from the passenger side and think its an exhaust leak because it starts getting louder as the motor warms up and can barely be heard when cold. Looked all over the manifold and didn't see any cracks. So maybe blowing between manifold and gasket?  Or could it be valves?  All valves are snug. Move just a little


SCJBM
Logged
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party
Driving a Rogers, working on a Hondo

mobboss

  • Karma: +15/-0
Re: Exhaust leak or valve noise
« Reply #1 on: April 13, 2013, 01:16:36 PM »
the best way to check is with a stethoscope, the other way is rev up the motor. if the ticking follows the revs its the valves. how do the heads look? are they painted??? if so look to see if the paint is being burnt off. then youll know its the exhaust gaskets. 
Logged
  • Boat #1: boat less
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party

ka0tyk

  • Karma: +30/-0
Re: Exhaust leak or valve noise
« Reply #2 on: April 13, 2013, 01:53:45 PM »
I had a bad hyd lofter that was ticking.  It didn't make noise all the time. Especially at idle. It would tick and then stop tick a few times stop etc.
Logged
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party

Rogers Hopeful

  • Karma: +4/-0
Re: Exhaust leak or valve noise
« Reply #3 on: April 13, 2013, 07:32:25 PM »
How about a spark plug that's not all the way in?!!  Decided to check plugs and #8 I could take out (unscrew) by hand. The noise stayed the same but was louder when cruising


SCJBM
Logged
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party
Driving a Rogers, working on a Hondo

mobboss

  • Karma: +15/-0
Re: Exhaust leak or valve noise
« Reply #4 on: April 13, 2013, 10:02:16 PM »
no that is not going to cause a tick.  it does sound like an exhaust leak. id pull the manifolds look at the gaskets, there cheap enough. if it is a gasket have the manifolds sanded flat.
Logged
  • Boat #1: boat less
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party

GT Jets

  • Karma: +192/-0
Re: Exhaust leak or valve noise
« Reply #5 on: April 13, 2013, 10:47:27 PM »
Quote from: Rogers Hopeful on April 13, 2013, 07:32:25 PM
How about a spark plug that's not all the way in?!!  Decided to check plugs and #8 I could take out (unscrew) by hand. The noise stayed the same but was louder when cruising


SCJBM


This will make the noise you describe...

I would re torque all the plugs and recheck.

Exhaust leaks are very easy to find in total darkness....  :sly:

If all else fails, re run the valve lash... If you have a set of rocker bugs, you could run the engine with the valve covers off.... ;)

GT
Logged
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party
Quote from: Brad @ SoCalJetBoats.com on December 22, 2009, 07:40:31 PM
If i get some free time tonight at work, ill play with it and post it for everyone to see.

Quote from: IRRebel on June 11, 2011, 07:30:45 PM
Time to man up and yank it John!  :banghead:
Ray

GT Jets

  • Karma: +192/-0
Re: Exhaust leak or valve noise
« Reply #6 on: April 13, 2013, 10:50:12 PM »
In case your thinking I lost it...

What I call rocker bugs... http://stores.intuitwebsites.com/hstrial-tools4lessincqb/-strse-584/Rocker-Arm-Oil-Plug/Detail.bok

My son saw these when he was like three and called them bugs and it stuck... I guess it was an inside joke thing on my part...

GT
Logged
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party
Quote from: Brad @ SoCalJetBoats.com on December 22, 2009, 07:40:31 PM
If i get some free time tonight at work, ill play with it and post it for everyone to see.

Quote from: IRRebel on June 11, 2011, 07:30:45 PM
Time to man up and yank it John!  :banghead:
Ray

propless

  • Karma: +12/-0
Re: Exhaust leak or valve noise
« Reply #7 on: April 13, 2013, 11:05:19 PM »
I'm pretty sure you just have an exhaust leak, but for your amusement heres what I went through with my last boat. It had that same tick (BBC, pass side of motor) I checked the exhaust, no leak, no cracks.  So I checked all the valves, it needed it anyway (because I didnt set them) but no loose valves. Fired it back up and it had the same tick.  :mad: Finally tracked it down to the intake, yea, the intake.  It was an EGR intake with a plate over the EGR ports. Whoever made the block off plate used a piece of material that had a small hole in it, so they threaded a screw into the plate, the screw fell out and caused the leak.  :screwy:

 Just goes to show you, you never know what someone before you might have done, so check everything.  ::)
Logged
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party
Quote from: 2savage4you on September 01, 2007, 07:33:42 PM
Welcome to the club of broken boats :o  Pay here$ bend over and move along.

Rogers Hopeful

  • Karma: +4/-0
Re: Exhaust leak or valve noise
« Reply #8 on: April 14, 2013, 08:31:58 PM »
Quote from: propless on April 13, 2013, 11:05:19 PM
I'm pretty sure you just have an exhaust leak, but for your amusement heres what I went through with my last boat. It had that same tick (BBC, pass side of motor) I checked the exhaust, no leak, no cracks.  So I checked all the valves, it needed it anyway (because I didnt set them) but no loose valves. Fired it back up and it had the same tick.  :mad: Finally tracked it down to the intake, yea, the intake.  It was an EGR intake with a plate over the EGR ports. Whoever made the block off plate used a piece of material that had a small hole in it, so they threaded a screw into the plate, the screw fell out and caused the leak.  :screwy:

 Just goes to show you, you never know what someone before you might have done, so check everything.  ::)

Interesting.  does it hurt anything if it is leaking there? beside being kinda annoying?  It was still making noise today after I tightened the plugs back up.  It is a 455 with performer intake.  so it could be the exhaust crossover?
Logged
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party
Driving a Rogers, working on a Hondo

mobboss

  • Karma: +15/-0
Re: Exhaust leak or valve noise
« Reply #9 on: April 14, 2013, 10:24:12 PM »
that depends, if you let it go and it progressively gets worse , the answer is yes. if it stays and is just annoying then no.
Logged
  • Boat #1: boat less
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party

Rogers Hopeful

  • Karma: +4/-0
Re: Exhaust leak or valve noise
« Reply #10 on: April 14, 2013, 10:50:26 PM »
well its been the same for the past 3 years soooo... lol
Logged
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party
Driving a Rogers, working on a Hondo
Pages: [1]
 


Null

SMFPacks CMS 1.0.3 © 2026