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95 SuperSport Engine Question |
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JoeinNY 
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Joined: October-19-2005 Location: United States Status: Offline Points: 5698 |
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 Posted: August-07-2014 at 3:53pm |
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not cheap, but it is usually the low pressure pump... eventually it gives out all together and you know for sure.
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burban89
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Joined: January-29-2008 Location: SC Status: Offline Points: 55 |
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Posted: August-07-2014 at 3:34pm |
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I am testing the fuel pressure today when I get home. The filter seemed to be clean and flowing and the anti siphon valve seemed ok. Just hope it is not the pump(s) cause they do not seem cheap from some pricing I have seen.
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malibud
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Joined: July-08-2009 Location: north carolina Status: Offline Points: 613 |
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Posted: August-07-2014 at 3:23pm |
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fuel filter . It just sounds fuel related .
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burban89
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Joined: January-29-2008 Location: SC Status: Offline Points: 55 |
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Posted: August-07-2014 at 3:19pm |
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I did change the relays with no change in performance.
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malibud
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Joined: July-08-2009 Location: north carolina Status: Offline Points: 613 |
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Posted: August-07-2014 at 3:14pm |
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Mine kinda did the same change out the relays since you have them . That's whAt. I did and all good now
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gun-driver
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Joined: July-18-2008 Location: Pittsburgh, Pa Status: Offline Points: 4127 |
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Posted: August-07-2014 at 9:51am |
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Proper link
https://www.youtube.com/watch?v=yIV4fJbrMk0 |
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burban89
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Joined: January-29-2008 Location: SC Status: Offline Points: 55 |
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Posted: August-07-2014 at 9:23am |
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It was bad again last night, wires still haven't shown up but should be here today. They were back ordered and I called around till I found them in stock.
I will get a gauge and check fuel pressure tonight also. Here is a crappy video but you can see and hear what it is doing. http://youtu.be/yIV4fJbrMk0 |
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Dreaming
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Joined: May-21-2010 Location: Tacoma, WA Status: Offline Points: 1870 |
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Posted: August-06-2014 at 9:19pm |
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since the stutter is still there, I think it would be prudent to put a fuel pressure gauge on and see if you have the correct fuel delivery pressure. You may have the start of a weak fuel pump that was accentuated poor ignition condition.
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burban89
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Joined: January-29-2008 Location: SC Status: Offline Points: 55 |
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Posted: August-04-2014 at 2:38pm |
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The fuel is good as I run the boat regularly. It has never really sat for a long time either. I ran some cleaners through it as well in case it was water or dirty.
I just ordered the wires and should have them tomorrow so I will check it out and update everyone by Thursday depending on the weather. |
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Bri892001
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Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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Posted: August-04-2014 at 1:43pm |
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It does have a stator, it's part of the distributor. I don't know how easy it is to change or if that's warranted.
How old is the fuel that you're running? Also, yes, doing the spark plug wires too is a good idea. |
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burban89
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Posted: August-04-2014 at 1:29pm |
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A little update, I changed the plugs and Dist cap/button and it is running a lot better. There is still a very small hesitation/stuttering when accelerating. Barely noticeable but since I know what I am looking for I feel it. I also tried the relays after that and there was no change. Just keeping them for spares.
Looks like I am going to do the wires next. Does this boat have a stator? Is it easy to change? |
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burban89
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Joined: January-29-2008 Location: SC Status: Offline Points: 55 |
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Posted: July-29-2014 at 11:51am |
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I actually bought this boat from a guy up in Indianapolis. I will see if my local dealer has anything in stock for wires.
Also, i noticed that there are multiple options for Dist caps, do you know which one this is? I can check later this evening if not. I will keep everyone posted on results. |
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phatsat67
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Joined: March-13-2006 Location: Indiana Status: Offline Points: 6150 |
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Posted: July-29-2014 at 10:59am |
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Autolite 764
Plug wires have to come from a PCM dealer. IE me or any other PCM dealer. |
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burban89
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Posted: July-29-2014 at 10:52am |
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Quick question,
What plugs and wires are recommended for this motor? |
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burban89
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Posted: July-29-2014 at 10:52am |
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I was going to change both relays as well since they are only 15$ a piece.
I may just do it all one part at a time and see what fixes it, that way I know and can let others know as well. I have not ran across this problem on any other searches. |
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JoeinNY
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Joined: October-19-2005 Location: United States Status: Offline Points: 5698 |
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Posted: July-29-2014 at 10:43am |
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I agree on the complete tune up – while it doesn’t have an fcc this could still be a fuel supply related issue, either the low pressure fuel pump or the fuel pump relay would be my first look.
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burban89
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Posted: July-29-2014 at 10:43am |
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It was done before I purchased it, I have had it for 1.5 years.
I was thinking about doing one just in case it was not done. Cap, rotor, plugs, and wires. I pulled a few plugs and the looked pretty good. Does it seem more electrical than fuel? |
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gun-driver
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Joined: July-18-2008 Location: Pittsburgh, Pa Status: Offline Points: 4127 |
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Posted: July-29-2014 at 10:39am |
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No FCC on a '95
When was the last time you did a complete tune up? |
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burban89
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Posted: July-28-2014 at 3:12pm |
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Ok so I have done a lot of research on my problem but now I think I may have done that for nothing.
First question is does the GT40 I have, have an FCC, I thought it did but after looking a little deeper it seems it may not as in 95 I may have a different GT40 than 96+. Now to the problem The boat has started to stutter/hesitate after it gets warm. It could take an hour or maybe even 4 hours for it to happen but it does happen. The boat takes off normal and then around 12-14 mph it will hesitate like it isn't getting fuel or enough power to get on plane. If it does get on plane it stops hesitating until I take off again. After trying to plane a few times it will not even get over 12-14 mph.The RPMs do jump a little during the hesitation. So most of the research I did revolved around the FCC, the hose inside the FCC, etc as a good culprit. I have checked the filter and anti siphon valve. They seem to be ok. I just do not want to start throwing parts at this if someone else has experienced it and can help me. Thanks       
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