GT40 takes longer to start when warm |
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C_Heath
Senior Member Joined: January-21-2020 Location: NC Status: Offline Points: 207 |
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Ive got the TFI sensor in my cart lol Any others I may need to look at? |
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1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold) 2000 Pro Air Nautique/GT40 |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11029 |
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Here's an old thread with "similar" issues.
Good reading but AndrewB obviously didn't know how or didn't want to share his fix He replaced more parts than you, so I wouldn't feel bad about replacing stuff Without the right diagnosis tools, you don't have much choice but to go on suggestions and what you think. link |
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C_Heath
Senior Member Joined: January-21-2020 Location: NC Status: Offline Points: 207 |
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It does not bother me one I-ota to throw money at parts that I know can fail to help my peace of mind. I've towed and been towed and neither were fun. This boat is heavier than my last 2 boats combined. I cant imagine having to float it on the trailer while wading in 4 feet of water with a dead engine while the dock is full of people fighting over 2 ramps
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1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold) 2000 Pro Air Nautique/GT40 |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11029 |
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I think you mean the TFI module, but there are the ECT, ACT and MAP sensors to consider.(plus a few more)
Spare parts on hand is always a good thing And change one thing at a time then test but I figure you know that. |
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C_Heath
Senior Member Joined: January-21-2020 Location: NC Status: Offline Points: 207 |
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ECT is engine coolant temp
MAP is absolute pressure whats Act? |
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1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold) 2000 Pro Air Nautique/GT40 |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11029 |
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Air Charge Temperature (incoming air temperature) See section 2 of the manual for a good description of the control system |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11029 |
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By the way, you'll find things in the manual that don't pertain to your engine since it's more accurate for the OMC/Volvo versions of these engines and it would seem that PCM just rubber stamped it without a good proofreading
It ain't the best but it's all we got |
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C_Heath
Senior Member Joined: January-21-2020 Location: NC Status: Offline Points: 207 |
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Im googling! lol ill check it out |
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1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold) 2000 Pro Air Nautique/GT40 |
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gun-driver
Grand Poobah Joined: July-18-2008 Location: Pittsburgh, Pa Status: Offline Points: 4127 |
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Another thing you can do while you’re waiting on parts is... in the manual is a section called “Theory of Operation” it explains what all these sensors do and and how the fuel system works to make the GT40 run.
Helps with trouble shooting when you understand how it all ties together. It starts on 2A-17 |
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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Chris, I'm with you on that. There are times when I'll spend $100 because when I put my head on the pillow at night I know that part isn't likely to be the next problem. And you are doing a good job of testing and trying to figure out the problem, a few more sensors may solve it. Plus, I'm hoping you spend all the money, pinpoint the problem, then I'll just take your fix and do it on mine! |
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'63 American Skier - '98 Sport Nautique
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C_Heath
Senior Member Joined: January-21-2020 Location: NC Status: Offline Points: 207 |
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dang right i need that thanks! |
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1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold) 2000 Pro Air Nautique/GT40 |
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C_Heath
Senior Member Joined: January-21-2020 Location: NC Status: Offline Points: 207 |
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ill be the guinea pig i dont care lol |
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1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold) 2000 Pro Air Nautique/GT40 |
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cboland
Senior Member Joined: July-15-2004 Location: Atlanta, GA Status: Offline Points: 185 |
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I don't believe these sensors are marine specific (somebody correct me if I'm wrong) and while I like to support Nautique Parts and SkiDIM, sometimes their engine components are absurdly overpriced (i.e. low pressure pump).
It would be great if somebody has NAPA or similar part #'s for any of these things if they posted. Could save us all a few bucks if we don't have to buy the PCM offering. |
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Bud
1999 Sport Nautique |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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You are correct they all have Ford part numbers. PCM just repackages them. I have most if not all numbers at home,unfortunately with all going on it might be awhile before I get there. I'll have to make up a list and post.
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C_Heath
Senior Member Joined: January-21-2020 Location: NC Status: Offline Points: 207 |
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you still on that 100x40 lot and burning up? lol |
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1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold) 2000 Pro Air Nautique/GT40 |
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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But then again you can't really support SkiDIM and Nautique Parts if you only buy more obscure or inboard specific parts there, then buy anything that can be found cheaper elsewhere. They can't be expected to sell at the same price as a national parts supplier.
Kind of like buying everything on Amazon and then wondering why your local store closed. |
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'63 American Skier - '98 Sport Nautique
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cboland
Senior Member Joined: July-15-2004 Location: Atlanta, GA Status: Offline Points: 185 |
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I don't disagree and don't have a problem paying a fair markup at the "local" retailer to support them. I feel good in knowing I have purchased plenty through those channels. But there is a point at which that's no longer reasonable. Take the low pressure pump I mentioned. That is sold for $215 at the "local guys." I purchased the exact same pump for $69 elsewhere (and they are still marking it up). That represents an increase of 212%. That is past the point at which I'm willing to be generous with my business. In fact, it feels more like they're trying to stick it to me which I don't appreciate. But this is what makes our country and capitalism great. If the small guys can get people to pay that then more power to them! |
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Bud
1999 Sport Nautique |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Yes I am and I'm sitting inside just like if I was back north. It just hit 90 out and it's 35 at the other end
I hear you Dave but it is tough paying 212 for a pump that's around 50 - 70. I have never bought anything from White Lake. You call them no one answers leave a message. After Zach left N3 I have had that happen there too. Not a fan of that. |
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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I agree on the service point, obviously if you are not receiving good service then they don't deserve your business. And I grant you on the LP pump, that is just too much of a difference.
I guess I'm just sensitive to this from hearing too many friends rail about the price difference of this or that at a smaller shop, then when they need some special fastener they want the same shop to spend a half hour figuring out the right $17 part and special order it. |
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'63 American Skier - '98 Sport Nautique
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SNobsessed
Grand Poobah Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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As for parts changing/troubleshooting, more than once I had a shop change a bunch of parts on my dime, they said that they were all 'weak'.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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I hear you Dave. That's why were are in trouble today. The money we saved by having stuff outsourced is now gone how many times over. Hope this is a wake up moment
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C_Heath
Senior Member Joined: January-21-2020 Location: NC Status: Offline Points: 207 |
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true but im not paying $215 for a LP pump when its $70 elsewhere. Ill pay a fair markup and thats far from fair. Ive probably spent $2500 this year at NP. Some things I have to just pass on though. |
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1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold) 2000 Pro Air Nautique/GT40 |
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11029 |
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Spark plugs are a good example of getting it stuck up your behind
Click on the link below for some reading link In this case it's PCM doing the gouging, just like most other OEM's of things like tractors, cars, ATV's, snowmobiles ..............and on and on. The dealer could easily sell you the same plug without the packaging for a lot less If you want genuine OEM supplied parts in genuine OEM packaging, which is all that some people will buy, you're gonna pay for that. |
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C_Heath
Senior Member Joined: January-21-2020 Location: NC Status: Offline Points: 207 |
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Still on it! I replaced the LP pump today with a new one and the fuel pressure regulator. Timing check coming next. The LP pump had a little trash in it but not much. It was 7 years old so I replaced it anyhow. That’s most of the fuel system besides fuel rail and injectors lol. I’ll report back after I put a timing light on it. Thanks guys.
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1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold) 2000 Pro Air Nautique/GT40 |
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gun-driver
Grand Poobah Joined: July-18-2008 Location: Pittsburgh, Pa Status: Offline Points: 4127 |
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Don’t forget there’s a certain way to check and set the timing.
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C_Heath
Senior Member Joined: January-21-2020 Location: NC Status: Offline Points: 207 |
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I’ve got the checking down I think. I’m not doing any setting till I report back lol |
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1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold) 2000 Pro Air Nautique/GT40 |
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C_Heath
Senior Member Joined: January-21-2020 Location: NC Status: Offline Points: 207 |
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Update: I did the LP fuel pump and pressure regulator. Still a long hot start. Say 5 seconds. Timing is next. Just and update for others with same issue. I’ll report back after checking base timing.
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1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold) 2000 Pro Air Nautique/GT40 |
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C_Heath
Senior Member Joined: January-21-2020 Location: NC Status: Offline Points: 207 |
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Update on the updates! Ordered 2 relays today, FUEL and EEC. It has practically turned winter here so no lake test until this weekend if Im lucky. Ill report back. The New LP pump and regulator didnt change things, still long start when warm, Im getting closer to this gremlin lol. Thanks guys!
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1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold) 2000 Pro Air Nautique/GT40 |
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gun-driver
Grand Poobah Joined: July-18-2008 Location: Pittsburgh, Pa Status: Offline Points: 4127 |
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Well at least now I know where to go for used GT40 parts.
Those relays can be cheaply purchased at the local parts store. |
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C_Heath
Senior Member Joined: January-21-2020 Location: NC Status: Offline Points: 207 |
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1979 Calipso Runabout (the boat that got it all started)
1988 Mastercraft ProStar 190 (sold) 2000 Pro Air Nautique/GT40 |
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