1998 EFI GT 40 Fuel Pump
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=12045
Printed Date: January-11-2025 at 11:17pm
Topic: 1998 EFI GT 40 Fuel Pump
Posted By: nautiquesonly
Subject: 1998 EFI GT 40 Fuel Pump
Date Posted: September-26-2008 at 12:04pm
Hello,
I have a 98 Sport with the EFI GT40 and the fuel pump in the fuel cell is working intermittently. I have changed out the kill switch and thought I had it fixed. It was working well and now it is doing it again. Turn the key and it comes on, turn it off and nothing. I hear a clicking when I turn the key when the pump does not respond. I am not sure if this is the pump or the relay or something else? Anyone have experience with this problem and if so what was the fix here? I really appreciate the help this is my first experience with the EFI all my Nautiques have been carb. Up until now the engine has run top notch. I appreciate the help.
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Living Life 1 bouy at a time behind my Nautique in Florida.
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Replies:
Posted By: M3Fan
Date Posted: September-26-2008 at 3:21pm
Keep in mind there are 2 fuel pumps. Are you sure it's the FCC HP pump? Intermittent problems with the pump firing could be the pump or the relays. May as well start with the relays because they are much cheaper than pumps.
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2000 SN GT40 w/99 Graphics/Gel
2016 SN 200 OB 5.3L DI
https://forum.fifteenoff.com
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Posted By: 8122pbrainard
Date Posted: September-26-2008 at 3:35pm
Joel (M3Fan) has a good point on the relays. I've heard of lots of problems with them. It's like the contact ratings of these relays is marginal for the amp load of the pumps.
If you have a volt meter and are handy with one, (or a friend) you may want to check the voltage at the pump and compare that to the "line" side (battery voltage) of the relay. A voltage drop will indicate bad contacts in the relay. Some basic checking can save you running around changing parts.
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54 Atom
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64 X55 Dunphy
Keep it original, Pete
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Posted By: nautiquesonly
Date Posted: September-26-2008 at 4:10pm
I appreciate the information here. I ordered a few relays from SKIDIM today. I have not looked at where the relays are located on the engine. If someone can let me know there location that would be great. I will use the meter and run a test. I appreciate the help.
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Living Life 1 bouy at a time behind my Nautique in Florida.
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Posted By: M3Fan
Date Posted: September-27-2008 at 1:44am
They are on the very back of the engine, above the transmission.
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2000 SN GT40 w/99 Graphics/Gel
2016 SN 200 OB 5.3L DI
https://forum.fifteenoff.com
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