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

Reply
 
Thread Tools Display Modes
  #1  
Old 06-24-2009, 03:52 PM
Thomas1966
Guest
 
Posts: n/a
Idle surging problem

I have a 1993 prostar 205 with a 351 engine. Boat idle changes from 700 to 950 rpm's. Upon accelaration boat runs fine no problems, I have changed the fuel/water seperator, but that did not clear up my problem. Another friend thinks my backpressure could not be correct, which means I may need a new muffler. Does anyone have any suggestions?
Reply With Quote
  #2  
Old 06-24-2009, 04:23 PM
GuitsBoy GuitsBoy is offline
TT Enthusiast
 
Join Date: May 2008
Boat: 1992 ProStar 205
Location: Northeast
Posts: 154
You can spray carb cleaner around the intake and carb to see if you have a vacuum leak, but more likely than not you just need to have the carb rebuilt. If youve still got the stock holley 4010, you way want to upgrade to the 4160 now. Its a much easier carb to tune and performs better on this motor.
Reply With Quote
  #3  
Old 06-24-2009, 04:55 PM
mcmx2 mcmx2 is offline
TT Enthusiast
 
Join Date: Sep 2008
Boat: 2005 TT 197 #77
Location: Southeast
Posts: 193
My guess is that a power valve is out on your carb.
Reply With Quote
  #4  
Old 06-24-2009, 05:29 PM
TMCNo1 TMCNo1 is offline
MC Hero
 
Join Date: Jul 2005
Boat: Gone
Location: Gone
Posts: 22,134
Quote:
Originally Posted by mcmx2 View Post
My guess is that a power valve is out on your carb.
I agree, went through the same thing last fall.
__________________
Charter Member Number 1

Quote: 2RLAKE,
At some point in time people need to wake up, remove their cranial intrusion into their own rectal areas, and take responsibility for their own actions.




Reply With Quote
  #5  
Old 06-24-2009, 07:42 PM
flat broke's Avatar
flat broke flat broke is offline
TT Regular
 
Join Date: Aug 2007
Boat: 89 ProStar 190 & 74 Eliminator Flat Bottom V-Drive
Location: West Coast
Posts: 65
carb ?

hey harold,

I have a 89 ps 190 351 1:1 how do I tell if I have a 4010 or a 4160 ? and what is the difference ? any info would be great thank you
Reply With Quote
  #6  
Old 06-24-2009, 07:51 PM
TMCNo1 TMCNo1 is offline
MC Hero
 
Join Date: Jul 2005
Boat: Gone
Location: Gone
Posts: 22,134
Quote:
Originally Posted by flat broke View Post
hey harold,

I have a 89 ps 190 351 1:1 how do I tell if I have a 4010 or a 4160 ? and what is the difference ? any info would be great thank you
It should have a 4160 from the factory, unless a previous owner has changed it out.
4160 is single inlet fuel line @45 degrees on front bowl, port side,
Attachment 48688
4010 is dual line feed with inlets on front and rear bowls starboard side, with externally adjustable floats and side fuel level sight holes,
Attachment 48689
__________________
Charter Member Number 1

Quote: 2RLAKE,
At some point in time people need to wake up, remove their cranial intrusion into their own rectal areas, and take responsibility for their own actions.





Last edited by TMCNo1; 06-17-2010 at 04:00 PM.
Reply With Quote
  #7  
Old 06-24-2009, 09:01 PM
flat broke's Avatar
flat broke flat broke is offline
TT Regular
 
Join Date: Aug 2007
Boat: 89 ProStar 190 & 74 Eliminator Flat Bottom V-Drive
Location: West Coast
Posts: 65
Quote:
Originally Posted by TMCNo1 View Post
It should have a 4160 from the factory, unless a previous owner has changed it out.
4160 is single inlet fuel line @45 degrees on front bowl, port side,
Attachment 48688
4010 is dual line feed with inlets on front and rear bowls starboard side, with externally adjustable floats and side fuel level sight holes,
Attachment 48689
looks like I am good to go thanks for the reply and the great tech info
Reply With Quote
  #8  
Old 06-25-2009, 08:28 AM
GuitsBoy GuitsBoy is offline
TT Enthusiast
 
Join Date: May 2008
Boat: 1992 ProStar 205
Location: Northeast
Posts: 154
Why did MC change to the 4010 on later models anyway? Was it supposed to be a higher performance option? It has adjustable floats, dual fuel feeds and dogleg boosters, etc.
Reply With Quote
  #9  
Old 06-25-2009, 12:37 PM
TMCNo1 TMCNo1 is offline
MC Hero
 
Join Date: Jul 2005
Boat: Gone
Location: Gone
Posts: 22,134
Quote:
Originally Posted by GuitsBoy View Post
Why did MC change to the 4010 on later models anyway? Was it supposed to be a higher performance option? It has adjustable floats, dual fuel feeds and dogleg boosters, etc.
Apparently it was the decision of Indmar to use the 4010 on the 351 HO with GT40 heads that put out 285 HP.
__________________
Charter Member Number 1

Quote: 2RLAKE,
At some point in time people need to wake up, remove their cranial intrusion into their own rectal areas, and take responsibility for their own actions.




Reply With Quote
  #10  
Old 06-25-2009, 12:42 PM
GuitsBoy GuitsBoy is offline
TT Enthusiast
 
Join Date: May 2008
Boat: 1992 ProStar 205
Location: Northeast
Posts: 154
Quote:
Originally Posted by TMCNo1 View Post
Apparently it was the decision of Indmar to use the 4010 on the 351 HO with GT40 heads that put out 285 HP.
Are there real world improvements over the 4160? So many of us have swapped out our 4010s for the 4160's. Im just wondering if were actually taking a step backwards.
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 05:20 AM.


2018