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1998 350 Mariner Mercruise 350 Magnum 2800 RPM WOT issue
- grizer
- Scurvy Dog
- Posts: 35
- Joined: August 7th, 2018, 2:48 pm
- Vessel Info: 1998 Carver 350 Mariner
- Location: Port Clinton, OH
1998 350 Mariner 5.0 Merc 3000RPM WOT
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- CYO Supporter
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- Joined: March 28th, 2016, 10:52 pm
- Vessel Info: 1998 Carver 355
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2022 Kawasaki 310X - Location: upper chesapeake bay
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Re: 1998 350 Mariner 5.0 Merc 3000RPM WOT
- bud37
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Re: 1998 350 Mariner 5.0 Merc 3000RPM WOT
- grizer
- Scurvy Dog
- Posts: 35
- Joined: August 7th, 2018, 2:48 pm
- Vessel Info: 1998 Carver 350 Mariner
- Location: Port Clinton, OH
Re: 1998 350 Mariner 5.0 Merc 3000RPM WOT
- bud37
- Admiral
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Re: 1998 350 Mariner 5.0 Merc 3000RPM WOT
grizer wrote:Source of the post Thank you both of you, however no hints in either of those replies. If anyone else has more suggestions I could really use the insight.
A couple questions that may help,....to be clear you are saying both engines act exactly the same with fuel pressures etc.
Is this something that has just happened abruptly to both sides ( were there any alarms, codes in memory etc )?
Are these engines MPI or TBI ?
Any work been done lately in the engine compartment ?
Have you changed fuel source lately ?
Thats all I can think of , but this may help the guys a bit.....good luck man..
-
- CYO Supporter
- Posts: 2292
- Joined: March 28th, 2016, 10:52 pm
- Vessel Info: 1998 Carver 355
Suspicious Fishes !
2022 Kawasaki 310X - Location: upper chesapeake bay
- Has thanked: 314 times
- Been thanked: 585 times
Re: 1998 350 Mariner 5.0 Merc 3000RPM WOT
Hint, its either a restriction in the fuel supply to the pumps or the pumps / regulators themselves.
Good luck.
- grizer
- Scurvy Dog
- Posts: 35
- Joined: August 7th, 2018, 2:48 pm
- Vessel Info: 1998 Carver 350 Mariner
- Location: Port Clinton, OH
Re: 1998 350 Mariner 5.0 Merc 3000RPM WOT
- buster53
- Admiral
- Posts: 997
- Joined: May 12th, 2017, 10:41 am
- Vessel Info: 2001, Carver 356
- Location: Lower Potomac, VA
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Re: 1998 350 Mariner 5.0 Merc 3000RPM WOT
While the low fuel pressure is definitely worth looking at, is there any chance the boat is way overpropped?
-
- CYO Supporter
- Posts: 2292
- Joined: March 28th, 2016, 10:52 pm
- Vessel Info: 1998 Carver 355
Suspicious Fishes !
2022 Kawasaki 310X - Location: upper chesapeake bay
- Has thanked: 314 times
- Been thanked: 585 times
Re: 1998 350 Mariner 5.0 Merc 3000RPM WOT
- bud37
- Admiral
- Posts: 4689
- Joined: April 23rd, 2015, 10:22 pm
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- Been thanked: 1150 times
Re: 1998 350 Mariner 5.0 Merc 3000RPM WOT
This is important info the guys need to help you........
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