Null


lupo1904

  • Karma: +9/-0
carb tunning
« on: February 27, 2011, 05:53:27 PM »
so i finally got my tx-19 from texas and it wont idle.I know that the elevation has something to do with it and the air in texas is different than the air in san diego.Can any body tell me if i need to richen or lean it out,or if i need to change the jetting,timing or?????? it has 2 750 holleys on a weind tunnel ram
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party

IRRebel

  • Karma: +16/-0
Re: carb tunning
« Reply #1 on: February 27, 2011, 06:58:11 PM »
so i finally got my tx-19 from texas and it wont idle.I know that the elevation has something to do with it and the air in texas is different than the air in san diego.Can any body tell me if i need to richen or lean it out,or if i need to change the jetting,timing or?????? it has 2 750 holleys on a weind tunnel ram

Rich/lean is going to be a tune issue from speed. Not idling, is it stalling out or a very high idle? (Either way probably related)

Depending on what carbs, could be dirt clogging the idle circuit, improperly setup throttle linkages and/or cables, Fuel pressure, a host of other things. Timing should be checked first, as I've seen ,with some others on the site, some really crazy $hit with timing issues. One boat even had the firing order wrong. 

Personally, if it stalls out, I'd be looking hard for a vacuum leak first and foremost. Your Weiand Tunnel is a two piece deal, and I've seen vacuum leaks at the gaskets where the carb base meets the intake, even warped ones as it's easy to over tighten the attachment nuts. Warped throttle plates, warped metering blocks and fuel bowls on the carbs.......I could go on and on. Get a can or two of WD40 and start spraying it around with the tube strategically while its running listening for a slight increase in RPM. You will have ID'd a leak there. Keep going. If you find one, you will find several as either many gaskets have failed, or Bam-Bam tightened all the bolts on the thing.

Good luck!  :thumbup: Hopefully it's something minor such as a gasket or two and not requiring parts and machining to fix.

Ray
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party
"Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways totally worn out shouting 'Holy Shit what a ride!"---Crewcheif22 AKA Keith

BOOST

  • Karma: +25/-0
Re: carb tunning
« Reply #2 on: February 27, 2011, 07:00:28 PM »
so i finally got my tx-19 from texas and it wont idle.I know that the elevation has something to do with it and the air in texas is different than the air in san diego.Can any body tell me if i need to richen or lean it out,or if i need to change the jetting,timing or?????? it has 2 750 holleys on a weind tunnel ram
  I would first get it to idle before you start making changes,just remember tuning on the trailer will have a different effect once you put it in the water,try making your tuning in the water.

crewchief22

  • Karma: +66/-0
Re: carb tunning
« Reply #3 on: February 27, 2011, 07:01:49 PM »
I would also recommend double checking float levels, they could be off due to the abuse of traveling by truck.

Good luck. 
  • Boat #1: '77 Hondo Pantera GT Jet
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party
"Racing is life!  Anything that happens before or after, is just waiting"    Steve McQueen

The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?

BOOST

  • Karma: +25/-0
Re: carb tunning
« Reply #4 on: February 27, 2011, 07:14:00 PM »
Maybe a little more info would help,does it hold an idle at a higher rpm ? Does it rev up and responed?

lupo1904

  • Karma: +9/-0
Re: carb tunning
« Reply #5 on: February 27, 2011, 08:10:15 PM »
i will post some pics of the linkage tomorrow its some crazy shit hym joints and shit,it took a bit to get it started but when it started it sounded real healthy there is some lag in the linkage like when i push the pedal it takes some time to pull the carbs open i dont know much so bare with me still learning. Once i got her started and kept the rpms up for a bit to warm the motor i kept having to push the throttle to keep the fucker running,then i would let off thinking it was gunna idle but nope shut down.
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party

lupo1904

  • Karma: +9/-0
Re: carb tunning
« Reply #6 on: February 27, 2011, 08:20:59 PM »
there is a pic of the linkage in the gallery i dont know how to post them below this :screwy:
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party

BOOST

  • Karma: +25/-0
Re: carb tunning
« Reply #7 on: February 27, 2011, 08:56:19 PM »
     Here you go. Looks like an Enderle linkage  :thumbup: sounds like you just need some fine tuning.
« Last Edit: February 27, 2011, 09:00:34 PM by BOOST »
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party

BOOST

  • Karma: +25/-0
Re: carb tunning
« Reply #8 on: February 27, 2011, 09:04:43 PM »
i will post some pics of the linkage tomorrow its some crazy shit hym joints and shit,it took a bit to get it started but when it started it sounded real healthy there is some lag in the linkage like when i push the pedal it takes some time to pull the carbs open i dont know much so bare with me still learning. Once i got her started and kept the rpms up for a bit to warm the motor i kept having to push the throttle to keep the ****** running,then i would let off thinking it was gunna idle but nope shut down.
  Remember to disconnect your drive shaft  O0

IRRebel

  • Karma: +16/-0
Re: carb tunning
« Reply #9 on: February 28, 2011, 09:46:45 AM »
     Here you go. Looks like an Enderle linkage  :thumbup: sounds like you just need some fine tuning.

Linkage looks like it's installed properly, except for the homemade throttle cable mount bracket. Nothing wrong with homemade, mine is as well, but yours is a push throttle and I'm betting that bracket flexes like a mother when you hit the pedal!  ;)  That would explain the throttle lag at the pedal. Check if the cable is mounted properly on the pedal end as well.

Ray
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party
"Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways totally worn out shouting 'Holy Shit what a ride!"---Crewcheif22 AKA Keith

SS-201

  • Karma: +0/-0
Re: carb tunning
« Reply #10 on: February 28, 2011, 12:43:13 PM »
Be sure the air bleeds are clear, spray some W-D 40 on them, back the corner air screws out a quarter or so.
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party

Brendella Pickle

  • Karma: +0/-0
Re: carb tunning
« Reply #11 on: February 28, 2011, 01:14:57 PM »
Were this my boat I would disconnect the pump, hook water to it and warm it up. My experience is that some engines just like to be warmed up before they will idle. Just my .02
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party

lupo1904

  • Karma: +9/-0
Re: carb tunning
« Reply #12 on: February 28, 2011, 06:57:17 PM »
That bracket does flex like a mofo im gunna do something about that,the pedal is a little rough when i push it,i will take it apart when the little one goes to sleep and see whats going on in there. Would you guys think its safe to take out next weekend to see how she runs?who knows maybe once she warms up she will idle. :-\
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party

lupo1904

  • Karma: +9/-0
Re: carb tunning
« Reply #13 on: February 28, 2011, 07:42:49 PM »
disconnect the drive shaft?what if i put one water hose in the pump and hook the other up to the motor? would that work?
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party

IRRebel

  • Karma: +16/-0
Re: carb tunning
« Reply #14 on: February 28, 2011, 08:04:14 PM »
I think you're mostly ok. I'm just concerned, and the more I look at that throttle cable bracket, the more concerned I get, as well as the setup on the linkage.

I've never seen one on a jet boat without a cable clamp right above the mount.

Good luck, really, I think you're safe, but I'd get that shit fixed like NOW, were I you.

Later we'll talk angles of where those bellcranks are, etc.  I think they could be adjusted better, and contrary to popular opinion,  they don't need to be 90 degrees apart in every case.

Ray
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party
"Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways totally worn out shouting 'Holy Shit what a ride!"---Crewcheif22 AKA Keith

lupo1904

  • Karma: +9/-0
Re: carb tunning
« Reply #15 on: February 28, 2011, 08:12:03 PM »
there is a cable clamp on there but it still pulls the bracket,im in san diego
  • Like
    Dislike
    Love
    HaHa
    Angry
    Surprise
    Sad
    Party

 


Null

SMFPacks CMS 1.0.3 © 2026