Go Back   TeamTalk > Maintenance Tips, How-tos and Refurbishing Topics > Engine / Drive Train

Reply
 
Thread Tools Display Modes
  #1  
Old 07-02-2016, 01:50 PM
Soder Soder is offline
TT Newbie
 
Join Date: Apr 2016
Boat: 2004 X-30 5.7L MCX
Location: Utah
Posts: 14
Lightbulb It's Not the Fuel Pump...

I bought a 2004 X30 MCX and love it about May 15th. Coming from a 19 ft stern drive it's a dream. ~450 hours and almost perfect upholstry and fiberglass (see pic).

My wife took her to a week long girls camp and was just pulling tubers (not to be confused with potatoes), and said at one point she couldn't get the boat above 13 mph even at WOT. I had experienced it a week earlier but it was more like the throttle cable wasn't pulling. However after a few seconds the throttle would catch up and work normally without me even touching it.

All this variation led me to think, here's the fuel pump issue everyone has been so good to document here. With a week at Lake Powell coming up I wasn't going to risk it. I bought a 2044 and threw it in my supply box.

Needless to say Lake Powell is as close to heaven as anywhere on earth to me. Things ran great but I found some consistency to this hiccup. Whenever we would start a pull (wakeboard, surfing, kneeboarding, tube), the engine would feel burdened and was loud like it was lugging along. I had to give it more throttle than expected to get people up. (It was probably good for my 11 year old daughter so I didn't rip her shoulders out.).

After 3-30 seconds, the engine would hit its sweet spot. The lugging would would go quiet and would be replaced by that smooth humming of the V-drive (I think that's where the hum comes from.)

Not a big deal except for the surge in power. If the Perfect Pass was already engaged it had to settle back in. When I made a sweet jump followed by a spectacular spill, it would start all over again whether we stopped the engine or not.

I thought, "we seem to be getting gas at the engine but maybe it's starving for the first few seconds." So while my dear wife made dinner at the campsite, I swapped fuel pumps. (45 minutes thanks to your help.) Funny enough, I pulled out a 2065 and put in the 2044. The PO must have had some experience on TT.

We went out that evening to catch some glass but sadly still behaved the same. (I think the 2044 was a bit better than the 2065, but it was probably just placebo.) I'll keep the 2065 as my "new" backup.

Knowing it's not a fuel pump issue, I'm looking for some help. Plug, injector, newbie to V-drives?

The good news is it did not affect our trip to Powell. We learned to surf and that not all fat sac placements are the same.

Thanks for the help!
Attached Images
  
__________________
2004 X-30 5.7L MCX
Reply With Quote
  #2  
Old 07-02-2016, 02:17 PM
CantRepeat's Avatar
CantRepeat CantRepeat is online now
 
Join Date: Jul 2008
Boat: 06 X30
Location: Roll Tide!!
Posts: 11,748
Didn't read your post yet, but your user name threw me off for a minute! I thought Cam bought an X30!!
__________________
Tim
Gone, out doing soft recreational past time with overpowered boat!
Reply With Quote
  #3  
Old 07-02-2016, 03:19 PM
Keith2230's Avatar
Keith2230 Keith2230 is offline
MC Fanatic
 
Join Date: Feb 2015
Boat: 2006 X-30 MCX
Location: Kansas City
Posts: 626
Your fuel is probably fine but just to be sure did you put a fuel pressure gauge on the rail to check it was around 60psi? My bet is it's with the ignition system. What does your cap, rotor, wires and plugs look like?
Reply With Quote
  #4  
Old 07-02-2016, 04:49 PM
neil.anderson63's Avatar
neil.anderson63 neil.anderson63 is online now
MC Devotee
 
Join Date: Dec 2011
Boat: 2007 X2
Location: Heartland, 'Merica
Posts: 1,885
did you put a new fuel filter on? Ethanol will gloss over the element and restrict fuel flow.
__________________
Screws fall out all the time, the world is an imperfect place.
Reply With Quote
  #5  
Old 07-04-2016, 09:43 PM
Soder Soder is offline
TT Newbie
 
Join Date: Apr 2016
Boat: 2004 X-30 5.7L MCX
Location: Utah
Posts: 14
Sorry about the username. All my close friends and in-laws call me by the first half of my last name. I thought I spelled it wrong when I registered and messed something up when I first saw "Sodar." Is he down there in Tide country with you? I spent a couple years down there and couldn't stand the humidity but LOVED the people! I hope I haven't confused too many.

Again, thanks to TT, I did have a fuel gauge with me and everything ran at ~60 psi at all times except for when cranking when it fluctuated wildly as expected. When I turned the boat off, the PSI dropped from ~60 to ~20 PSI after about 10 minutes with both pumps.

I did not put a new fuel filter on. I'm pretty sure the PO did that last fall when he had it winterized, but for how cheap and easy they are to change, I'll give it a shot.

Thanks for the suggestions about the ignition system. I pulled the plug wires off the cap and everything looked clean and no signs of corrosion or burns. I'll dig further into the system when I have time and will post back what I find.

In the mean time, I'm still open to suggestions on what could cause this inconvenience in performance.
__________________
2004 X-30 5.7L MCX
Reply With Quote
  #6  
Old 07-04-2016, 10:30 PM
Table Rocker's Avatar
Table Rocker Table Rocker is online now
MC Devotee
 
Join Date: Oct 2010
Boat: '96 ProStar 205, Sammy Duvall, LT-1
Location: Fayetteville, Arkansas
Posts: 2,065
Could it be over-propped?
__________________
'96 ProStar 205 SD LT-1
Reply With Quote
  #7  
Old 07-05-2016, 07:23 AM
mikeg205's Avatar
mikeg205 mikeg205 is offline
Moderator
 
Join Date: Aug 2011
Boat: 1995 Pro Star 205 5.7 Liter
Location: Plainfield - Joliet, IL
Posts: 15,242
Send a message via Skype™ to mikeg205
I would also check all fuel pickup - to make sure to make sure no air is getting in. How do the plugs look ?
__________________
...A bad day water skiing still beats a good day at work...1995 Pro Star 205....
Reply With Quote
  #8  
Old 07-05-2016, 07:55 AM
Rossterman's Avatar
Rossterman Rossterman is offline
MC Devotee
 
Join Date: May 2012
Boat: 2001 prostar 205V
Location: Westcoast
Posts: 1,012
Did it have the clear corrugated hose from the pump to top of cannister? Some with the older style black ones (non corrugated) have experienced kinking of the line restricting fuel.
Reply With Quote
  #9  
Old 07-05-2016, 08:05 AM
JohnE's Avatar
JohnE JohnE is offline
Moderator
 
Join Date: Jan 2006
Boat: 40th Anniversary X14
Location: Boston 'burbs
Posts: 10,263
Quote:
Originally Posted by CantRepeat View Post
Didn't read your post yet, but your user name threw me off for a minute! I thought Cam bought an X30!!
Had me scratching my head after the long weekend too.
__________________
40th Anniversaary X14

'97 Prostar 190 - LT-1 (For Sale)

Prior boats - 2009 X14, 2008 X14, 2005 197, 1988 Tristar 190, 1989 Prostar.
Reply With Quote
  #10  
Old 07-05-2016, 08:10 AM
ttu's Avatar
ttu ttu is offline
MC Maniac
 
Join Date: Jun 2005
Boat: 2007 X2 towed by a 2012 Touareg TDI
Location: tulsa
Posts: 4,637
Quote:
Originally Posted by CantRepeat View Post
Didn't read your post yet, but your user name threw me off for a minute! I thought Cam bought an X30!!
^^that was my thought also!
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -4. The time now is 06:41 PM.