Forums
NautiqueParts.comNautiqueSkins.com - Correct Craft Upholstery and Part
  New Posts New Posts RSS Feed - GT40 takes longer to start when warm
  FAQ FAQ  Forum Search   Register Register  Login Login

GT40 takes longer to start when warm

 Post Reply Post Reply Page   123 6>
Author
C_Heath View Drop Down
Senior Member
Senior Member
Avatar

Joined: January-21-2020
Location: NC
Status: Offline
Points: 207
Post Options Post Options   Thanks (0) Thanks(0)   Quote C_Heath Quote  Post ReplyReply Direct Link To This Post Topic: GT40 takes longer to start when warm
    Posted: April-09-2020 at 11:23am
ITS FIXED! Scroll to the end of the pages. Thanks guys!



Went out yesterday, ran great all day except when we stop and float for a while. When I go to fire it back up it may take 5-10 seconds to fire. It always fired, spun over fast just took longer. Maybe a timing issue?

New Items in March 2020
HP fuel pump
Fuel filter
Air Filter
Plugs
Wires
Rotor cap and button looked brand new so I didnt change it
impeller
oil
coil
oil filter
water strainer
transmission fluid
Anti-syphon Valve

1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold)
2000 Pro Air Nautique/GT40
Back to Top
63 Skier View Drop Down
Grand Poobah
Grand Poobah
Avatar

Joined: October-06-2006
Location: Concord, NH
Status: Offline
Points: 4009
Post Options Post Options   Thanks (0) Thanks(0)   Quote 63 Skier Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 11:48am
Mine does exactly the same thing. If you drop a skier, turn off for 5-15 minutes, it fires right back up. Let it sit for 25 minutes to an hour and it has to crank for a bit, not 5-10 seconds, I'd say more like 3-5 seconds. It's done it for all the time I've owned it, and since it runs perfectly otherwise I haven't tried to fix it.
Back to Top
Gary S View Drop Down
Grand Poobah
Grand Poobah
Avatar

Joined: November-30-2006
Location: Illinois
Status: Offline
Points: 13973
Post Options Post Options   Thanks (1) Thanks(1)   Quote Gary S Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 11:53am
Since you have changed all that it might be worth your time to work on the LP pump as well first. Might want to get your hands on a fuel pressure gauge as well. Just curious you have changed the rotor,cap and button. Whats a button?











69 Mustang HM SS
95 Nautique Super Sport
Back to Top
KENO View Drop Down
Grand Poobah
Grand Poobah


Joined: June-06-2004
Location: United States
Status: Offline
Points: 9780
Post Options Post Options   Thanks (1) Thanks(1)   Quote KENO Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 12:29pm
Originally posted by C_Heath C_Heath wrote:

Went out yesterday, ran great all day except when we stop and float for a while. When I go to fire it back up it may take 5-10 seconds to fire. It always fired, spun over fast just took longer. Maybe a timing issue?

New Items in March 2020
HP fuel pump
Fuel filter
Air Filter
Plugs
Wires
Rotor cap and button looked brand new so I didnt change it
impeller
oil
coil
oil filter
water strainer
transmission fluid
Anti-syphon Valve



Sounds like one or more leaky injectors or a leaky fuel pressure regulator putting some extra fuel into the engine while it's off.

Probably fires right up when the engine is cold and if you're using the boat and you turn it off for a short time it fires right back up cause it hasn't leaked enough in to flood the engine yet.

Let it sit for a longer time like 63 skier said and it's getting flooded and that gives the long crank time.

The amount of leakage affects the times obviously
Back to Top
Orlando76 View Drop Down
Grand Poobah
Grand Poobah
Avatar

Joined: May-21-2013
Location: Mount Dora, FL
Status: Offline
Points: 3108
Post Options Post Options   Thanks (1) Thanks(1)   Quote Orlando76 Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 12:37pm
Originally posted by KENO KENO wrote:

Originally posted by C_Heath C_Heath wrote:

Went out yesterday, ran great all day except when we stop and float for a while. When I go to fire it back up it may take 5-10 seconds to fire. It always fired, spun over fast just took longer. Maybe a timing issue?

New Items in March 2020
HP fuel pump
Fuel filter
Air Filter
Plugs
Wires
Rotor cap and button looked brand new so I didnt change it
impeller
oil
coil
oil filter
water strainer
transmission fluid
Anti-syphon Valve



Sounds like one or more leaky injectors or a leaky fuel pressure regulator putting some extra fuel into the engine while it's off.

Probably fires right up when the engine is cold and if you're using the boat and you turn it off for a short time it fires right back up cause it hasn't leaked enough in to flood the engine yet.

Let it sit for a longer time like 63 skier said and it's getting flooded and that gives the long crank time.

The amount of leakage affects the times obviously


I’ll agree with Keno. But do Check timing first. Seems like this becomes a common issue on GT40’s
Please support The Cystic Fibrosis Foundation
1976 Ski Nautique 351 Escort
1993 Ski Nautique purple and black 351 HO PCM
Back to Top
C_Heath View Drop Down
Senior Member
Senior Member
Avatar

Joined: January-21-2020
Location: NC
Status: Offline
Points: 207
Post Options Post Options   Thanks (0) Thanks(0)   Quote C_Heath Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 12:42pm
Originally posted by Gary S Gary S wrote:

Since you have changed all that it might be worth your time to work on the LP pump as well first. Might want to get your hands on a fuel pressure gauge as well. Just curious you have changed the rotor,cap and button. Whats a button?













lol, my dad always called it Rotor cap and Rotor button. I bought them but didnt change them out because the current cap and button looked new.
1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold)
2000 Pro Air Nautique/GT40
Back to Top
Gary S View Drop Down
Grand Poobah
Grand Poobah
Avatar

Joined: November-30-2006
Location: Illinois
Status: Offline
Points: 13973
Post Options Post Options   Thanks (1) Thanks(1)   Quote Gary S Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 1:37pm
I knew what you meant just kidding you. Never heard the term until Planet Nautique maybe it's a regional thing?
69 Mustang HM SS
95 Nautique Super Sport
Back to Top
C_Heath View Drop Down
Senior Member
Senior Member
Avatar

Joined: January-21-2020
Location: NC
Status: Offline
Points: 207
Post Options Post Options   Thanks (0) Thanks(0)   Quote C_Heath Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 2:04pm
Originally posted by Gary S Gary S wrote:

I knew what you meant just kidding you. Never heard the term until Planet Nautique maybe it's a regional thing?


Could be. Thanks for taking the time to list all those pages. Ill for sure give it a shot as well.
1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold)
2000 Pro Air Nautique/GT40
Back to Top
63 Skier View Drop Down
Grand Poobah
Grand Poobah
Avatar

Joined: October-06-2006
Location: Concord, NH
Status: Offline
Points: 4009
Post Options Post Options   Thanks (0) Thanks(0)   Quote 63 Skier Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 2:14pm
Gary, is that the pre fuel canister fuel pump?
Back to Top
Gary S View Drop Down
Grand Poobah
Grand Poobah
Avatar

Joined: November-30-2006
Location: Illinois
Status: Offline
Points: 13973
Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary S Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 2:47pm
Yes Dave same pump on all of them,it either supplies the HP pump direct on a '95 or supplies the FCC on the others . Found that just surfing one time . Wonder how many have been replaced that could have been saved
69 Mustang HM SS
95 Nautique Super Sport
Back to Top
C_Heath View Drop Down
Senior Member
Senior Member
Avatar

Joined: January-21-2020
Location: NC
Status: Offline
Points: 207
Post Options Post Options   Thanks (0) Thanks(0)   Quote C_Heath Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 3:10pm
Originally posted by Orlando76 Orlando76 wrote:

Originally posted by KENO KENO wrote:

Originally posted by C_Heath C_Heath wrote:

Went out yesterday, ran great all day except when we stop and float for a while. When I go to fire it back up it may take 5-10 seconds to fire. It always fired, spun over fast just took longer. Maybe a timing issue?

New Items in March 2020
HP fuel pump
Fuel filter
Air Filter
Plugs
Wires
Rotor cap and button looked brand new so I didnt change it
impeller
oil
coil
oil filter
water strainer
transmission fluid
Anti-syphon Valve



Sounds like one or more leaky injectors or a leaky fuel pressure regulator putting some extra fuel into the engine while it's off.

Probably fires right up when the engine is cold and if you're using the boat and you turn it off for a short time it fires right back up cause it hasn't leaked enough in to flood the engine yet.

Let it sit for a longer time like 63 skier said and it's getting flooded and that gives the long crank time.

The amount of leakage affects the times obviously


I’ll agree with Keno. But do Check timing first. Seems like this becomes a common issue on GT40’s


You know I thought about replacing the injectors because of their age. From the little research I did, they weren't that expensive. I could be wrong tho.
1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold)
2000 Pro Air Nautique/GT40
Back to Top
gun-driver View Drop Down
Grand Poobah
Grand Poobah


Joined: July-18-2008
Location: Pittsburgh, Pa
Status: Offline
Points: 4081
Post Options Post Options   Thanks (1) Thanks(1)   Quote gun-driver Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 3:13pm
A simple fuel pressure gauge will tell you if they're leaking.
Back to Top
C_Heath View Drop Down
Senior Member
Senior Member
Avatar

Joined: January-21-2020
Location: NC
Status: Offline
Points: 207
Post Options Post Options   Thanks (0) Thanks(0)   Quote C_Heath Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 3:16pm
Originally posted by gun-driver gun-driver wrote:

A simple fuel pressure gauge will tell you if they're leaking.


just looked at the injector prices again. I retract that last statement about them lol.

thanks, ill look into a manual gauge to check it
1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold)
2000 Pro Air Nautique/GT40
Back to Top
63 Skier View Drop Down
Grand Poobah
Grand Poobah
Avatar

Joined: October-06-2006
Location: Concord, NH
Status: Offline
Points: 4009
Post Options Post Options   Thanks (0) Thanks(0)   Quote 63 Skier Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 6:26pm
I guess my thought behind ignoring mine is, I don't believe the fuel drip is causing damage. The added pull on the battery plus heating up the starter to do some extra cranking is not a concern for me, does it reduce starter life, maybe, but my feeling is a starter with proper amperage flow to it from a good, fully charged battery isn't experiencing reduced life due to some cranking. And I'd say 90% of my restarts are hot starts, in that reduced down time period, only 10% after sitting for a half hour where I have to crank extra. So maybe a few times a week for 4-5 months?

Then again, 10 seconds of cranking is quite a long time, if it really is that long I'd probably be looking into it more.
Back to Top
C_Heath View Drop Down
Senior Member
Senior Member
Avatar

Joined: January-21-2020
Location: NC
Status: Offline
Points: 207
Post Options Post Options   Thanks (0) Thanks(0)   Quote C_Heath Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 9:01pm
I’d say my longest crank was 5 seconds. It’s just a pain in my behind. I spent a load on it on maintenance in March so I want it to be right. Not to mention everyone in the boat looking at me with big eyes while it’s spinning over. I hate that. I’ve got a fuel pressure checker on the way. I may go ahead and put a new LP fuel pump and fuel pressure regulator on it anyhow. If the pressure is ok and all that’s been done the only thing left will be the injectors leaking.
1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold)
2000 Pro Air Nautique/GT40
Back to Top
C_Heath View Drop Down
Senior Member
Senior Member
Avatar

Joined: January-21-2020
Location: NC
Status: Offline
Points: 207
Post Options Post Options   Thanks (0) Thanks(0)   Quote C_Heath Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 9:03pm
Originally posted by Gary S Gary S wrote:

I knew what you meant just kidding you. Never heard the term until Planet Nautique maybe it's a regional thing?


Gary,

Wonder if a regulator from auto zone would be the same thing? It’s $40 vs nautique parts $215.
1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold)
2000 Pro Air Nautique/GT40
Back to Top
Gary S View Drop Down
Grand Poobah
Grand Poobah
Avatar

Joined: November-30-2006
Location: Illinois
Status: Offline
Points: 13973
Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary S Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 9:19pm
Yea they are but I don't have the Ford part number on me maybe Ken can find it. Some times you can find oem ones on ebay reasonably
69 Mustang HM SS
95 Nautique Super Sport
Back to Top
63 Skier View Drop Down
Grand Poobah
Grand Poobah
Avatar

Joined: October-06-2006
Location: Concord, NH
Status: Offline
Points: 4009
Post Options Post Options   Thanks (0) Thanks(0)   Quote 63 Skier Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 9:59pm
I know what you mean by people looking at you when it's cranking, but most of the time I have people in the boat that know it well and aren't surprised. With newbie's I've definitely had a couple of "uh oh's" before it fires up.
Back to Top
gun-driver View Drop Down
Grand Poobah
Grand Poobah


Joined: July-18-2008
Location: Pittsburgh, Pa
Status: Offline
Points: 4081
Post Options Post Options   Thanks (0) Thanks(0)   Quote gun-driver Quote  Post ReplyReply Direct Link To This Post Posted: April-09-2020 at 11:32pm
Back to Top
C_Heath View Drop Down
Senior Member
Senior Member
Avatar

Joined: January-21-2020
Location: NC
Status: Offline
Points: 207
Post Options Post Options   Thanks (0) Thanks(0)   Quote C_Heath Quote  Post ReplyReply Direct Link To This Post Posted: April-10-2020 at 12:40am
Originally posted by gun-driver gun-driver wrote:

Yes the auto regulator is the same off the top of my head. I believe this is it
Alternate/OEM Part Number(s): CM4643, CM4664, F2LE9C968EA, F4CE9C968AA, F4CZ9C968A
https://www.rockauto.com/en/moreinfo.php?pk=382279&cc=1106064&jsn=605&_nck=ZExt1ysfqhqWnq%2BEvUNdS3Txyey60IDtnjPWF5UU9J0BWQv7pvqZbkEUk86%2BAYIh3BPX4eQfsOii%2B3W9wETc7vH6sYSQ61E%2BEo5v1aDvJ0g0u2LZZIP75Qs2l6Yzcd2bt4naVWOOLJkoQeC32%2B%2B8ZWkYrgIbFUwwXN%2Ft3x%2FK69eHsFOoS%2FpnkPGCA8aQlc1iNmC1tIKZvKv261IVgfHujL8pTOcNdJDPLw1b10b3F2WujJrg4repCllBQpKUHK%2B%2B%2FE02jBn3L9hg4H4ZFXszFgBL6jolYbBaT7czNndBPMKcFEJgD6OK5oEMdluC6pYxszFzPJF%2B4IBXm9470%2F41aXS70ohudflU

And just incase Pete wants to pick one up
https://www.autozone.com/fuel-delivery/fuel-pressure-regulator/gp-sorensen-fuel-pressure-regulator-800-127/79674_594834_0?fromString=search&make=Ford&model=&year=

With the pressure gauge you need to check to see if it holds pressure for the appropriate amount of time after shutting down hot


Awesome thanks so much. I’ll pick one up. Sometimes I think nautiqueparts is crazy high because it’s a nautique and we have our cart full anyhow so we may as well pick all of it up. I support them. Thousands this year but if I can get a cross reference and it’s the same part I am going to do it. Thanks again!
1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold)
2000 Pro Air Nautique/GT40
Back to Top
gun-driver View Drop Down
Grand Poobah
Grand Poobah


Joined: July-18-2008
Location: Pittsburgh, Pa
Status: Offline
Points: 4081
Post Options Post Options   Thanks (0) Thanks(0)   Quote gun-driver Quote  Post ReplyReply Direct Link To This Post Posted: April-10-2020 at 1:51pm
Back to Top
C_Heath View Drop Down
Senior Member
Senior Member
Avatar

Joined: January-21-2020
Location: NC
Status: Offline
Points: 207
Post Options Post Options   Thanks (0) Thanks(0)   Quote C_Heath Quote  Post ReplyReply Direct Link To This Post Posted: April-13-2020 at 3:32am
Originally posted by gun-driver gun-driver wrote:

Pick one of these up while you’re there.
https://www.autozone.com/test-scan-and-specialty-tools/fuel-pressure-tester/innova-fuel-injection-pressure-tester/273356_0_0


Got it today thanks!!! I’ll figure this baby out. Lol
1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold)
2000 Pro Air Nautique/GT40
Back to Top
KENO View Drop Down
Grand Poobah
Grand Poobah


Joined: June-06-2004
Location: United States
Status: Offline
Points: 9780
Post Options Post Options   Thanks (1) Thanks(1)   Quote KENO Quote  Post ReplyReply Direct Link To This Post Posted: April-13-2020 at 8:46am
Originally posted by C_Heath C_Heath wrote:


Got it today thanks!!! I’ll figure this baby out. Lol


Section 3H1 of the gt40 manual in the link is a good starting point for fuel pressure testing

link
Back to Top
gun-driver View Drop Down
Grand Poobah
Grand Poobah


Joined: July-18-2008
Location: Pittsburgh, Pa
Status: Offline
Points: 4081
Post Options Post Options   Thanks (0) Thanks(0)   Quote gun-driver Quote  Post ReplyReply Direct Link To This Post Posted: April-13-2020 at 3:58pm
Originally posted by C_Heath C_Heath wrote:



New Items in March 2020
HP fuel pump
Air Filter
Plugs
Wires
Rotor cap and button looked brand new so I didnt change it
impeller
coil
water strainer
Anti-syphon Valve

Is there a reason all these were changed, or was this all done because of the long crank when hot issue?
Back to Top
C_Heath View Drop Down
Senior Member
Senior Member
Avatar

Joined: January-21-2020
Location: NC
Status: Offline
Points: 207
Post Options Post Options   Thanks (0) Thanks(0)   Quote C_Heath Quote  Post ReplyReply Direct Link To This Post Posted: April-13-2020 at 10:31pm
Originally posted by gun-driver gun-driver wrote:

Originally posted by C_Heath C_Heath wrote:



New Items in March 2020
HP fuel pump
Air Filter
Plugs
Wires
Rotor cap and button looked brand new so I didnt change it
impeller
coil
water strainer
Anti-syphon Valve

Is there a reason all these were changed, or was this all done because of the long crank when hot issue?


I just bought the boat in feb of this year. I wanted to do these items just so I knew that they had been done. I plan on keeping it for a while. It has 605 hours on it and yes maybe some of the items I replaced didn’t need it but I’d rather spend the money on it knowing that it’s Been done. The previous owner is awesome. Still works with my questions when I need him. He did tell me about the long starts when warm. Said it drove him nuts but it never left him stranded so he just let it roll. Well, it bugs me and I’ll find it. I still would like to do a LP fuel pump $80 and a fuel pressure regulator also $80 and maybe a TFI module. As soon as it warms up I’ll do a fuel pressure test and leak down to see where I stand.
1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold)
2000 Pro Air Nautique/GT40
Back to Top
gun-driver View Drop Down
Grand Poobah
Grand Poobah


Joined: July-18-2008
Location: Pittsburgh, Pa
Status: Offline
Points: 4081
Post Options Post Options   Thanks (0) Thanks(0)   Quote gun-driver Quote  Post ReplyReply Direct Link To This Post Posted: April-13-2020 at 10:37pm
Gotcha
If you don't want those old used parts cluttering up the garage, I certainly know of a place where you could send them.   
Back to Top
C_Heath View Drop Down
Senior Member
Senior Member
Avatar

Joined: January-21-2020
Location: NC
Status: Offline
Points: 207
Post Options Post Options   Thanks (0) Thanks(0)   Quote C_Heath Quote  Post ReplyReply Direct Link To This Post Posted: April-13-2020 at 10:43pm
Originally posted by gun-driver gun-driver wrote:

Gotcha
If you don't want those old used parts cluttering up the garage, I certainly know of a place where you could send them.   


Ouch. I trashed most of it. at least the strainer was bent all to crap, the old HP fuel pump I trashed but I kept the old wires and trashed the impeller.
1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold)
2000 Pro Air Nautique/GT40
Back to Top
gun-driver View Drop Down
Grand Poobah
Grand Poobah


Joined: July-18-2008
Location: Pittsburgh, Pa
Status: Offline
Points: 4081
Post Options Post Options   Thanks (0) Thanks(0)   Quote gun-driver Quote  Post ReplyReply Direct Link To This Post Posted: April-13-2020 at 10:48pm
   
Back to Top
lewy2001 View Drop Down
Grand Poobah
Grand Poobah
Avatar

Joined: March-19-2008
Location: NSW Australia
Status: Offline
Points: 2229
Post Options Post Options   Thanks (0) Thanks(0)   Quote lewy2001 Quote  Post ReplyReply Direct Link To This Post Posted: April-13-2020 at 10:58pm
Fuel pressure is the best place to start after you have confirmed spark. One quick simple check is can you hear the fuel pumps prime when you turn the key to on position before you crank the engine. Adding a fuel pressure gauge to GT40 tool kit is the best $45 you will spend
If you're going through hell, keep going

89 Ski

<a href="http://www.correctcraftfan.com/diaries/details.asp?ID=5685" ta
Back to Top
63 Skier View Drop Down
Grand Poobah
Grand Poobah
Avatar

Joined: October-06-2006
Location: Concord, NH
Status: Offline
Points: 4009
Post Options Post Options   Thanks (0) Thanks(0)   Quote 63 Skier Quote  Post ReplyReply Direct Link To This Post Posted: April-14-2020 at 12:50am
Paul, what did you want out of that used parts list? Certainly not old plugs and wires? HP pump and coil, maybe?
Back to Top
 Post Reply Post Reply Page   123 6>
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Copyright 2023 | Bagley Productions, LLC