Boat

Have Boat Questions? Ask a Boat Repair Expert.

Ask an Expert,
Get an Answer ASAP!

Boat

1988 Mastercraft ProStar 190, Ford 351 engine Symptoms: Upon

Customer Question
1988 Mastercraft ProStar 190, Ford...
1988 Mastercraft ProStar 190, Ford 351 engine
Symptoms:
Upon initial start, motor will run strong but only for limited amount of time depending on increase in RPM. For example,
15 seconds @ 3,000
1 minute @ 2,600
3 minutes @ 2,300
6 minutes @ 2,100
Continuous @ 2,000
Strangely, after the motor has stopped a few times, the motor will begin stopping more frequently. For example, after a while, the motor will only run 1-2 minutes @ 2,000 rpm before stopping, whereas before it ran continuously. This eventually happens after the motor is start and stopped throughout a 1 hour period. Motor stoppage just seems to happen more frequently as the day progresses. And, hot starts are very difficult. usually require several throttle pumps or, must pour a small amount of gasoline directly into the carb. Motor then fires immediately.
At one point during the trouble shooting process, we wanted to determine if the issue was related to the carb not getting enough fuel. We were driving the boat, removed the carb breathe. When the motor began to stall, we sprayed WD-40 into the carb to see if the motor would continue running. It did not continue running and stalled. Was reluctant to attempt the same test with spray starter fluid for fear of fire or engine damage.
Engine temperature gauge reports 115-125F during operation. I understand normal operation is 140-160F
Replaced:
Fuel Pump
Coil
Relay
Submitted: 1 year ago.Category: Boat
Show More
Show Less
Ask Your Own Boat Question
Answered in 9 minutes by:
9/21/2016
Marine Mechanic: Tan, MerCruiser Certified Technician replied 1 year ago
Tan
Tan, MerCruiser Certified Technician
Category: Boat
Satisfied Customers: 11,108
Experience: 40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.
Verified

Hello Britton. My name is Tan.

Try running the engine on a different fuel source. Disconnect the fuel line at the engine coming from the fuel tank plug the line.Then with a gas can and a short piece of hose connect the hose to the engine. Secure the gas can. Run the boat does it run better?

You symptoms are of fuel starvation this could be debris in the fuel tank, clogged or kinked vent line, failing anti siphon valve or a bad fuel supply line.

We have to separate the engine from the boat side fuel system. This way we know if you have fuel supply issue or an engine issue.

Does this make sense?

Ask Your Own Boat Question
Customer reply replied 1 year ago
I forgot to mention that we did run a temporary fuel line test where we ran a line straight from the tank to the fuel pump. No change.Should I try to inject some starting fluid when the engine begins to stall? (similar to my experiment with the WD-40)
Marine Mechanic: Tan, MerCruiser Certified Technician replied 1 year ago

Did you do the test as I outlined?

Different fuel tank?

Ask Your Own Boat Question
Customer reply replied 1 year ago
I was just providing another data point about bypassing other in-line devices (fuel filter/gascolator). Will perform your "different fuel tank" recommendation then reply with results. Thanks!
Marine Mechanic: Tan, MerCruiser Certified Technician replied 1 year ago

Ok

Ask Your Own Boat Question
Ask Dominick Your Own Question
Dominick
Dominick
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1,009
1,009 Satisfied Customers
Experience: 25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

Dominick is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

Ted G.

Ted G.

Rigger, Diagnostician

695 satisfied customers

40 years boating, Safe boating instruct., Offshore Race promoter, Failure Analysis, Expert Witness

John White

John White

Marine Mechanic

306 satisfied customers

11 years experience working on outboards, inboards, sterndrives & pwcs

Jason

Jason

Marine Mechanic

15,782 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,108 satisfied customers

40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

Jeff G.

Jeff G.

Marine Mechanic

4,728 satisfied customers

42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance

Captain Dave

Captain Dave

Marine Mechanic

2,672 satisfied customers

USCG Licensed Captain, 20+ Years Boating, Fishing, Maintenance and Repair Experience

< Previous | Next >

Related Boat Questions
Which standard is maximum power rating calculated to for a
Which standard is maximum power rating calculated to for a Suzuki 150Hp Outboard. Model D150? … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
My 1994 200V6 Yamaha outboard run out of oil due to a faulty
My 1994 200V6 Yamaha outboard run out of oil due to a faulty oil level sensor in the outboard tank not activating the oil supplyfrom the filler tank. The motor died while running at 75% speed. It is s… read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
Need to install a new Throttle Linkage Kit by wednesday. I
Need to install a new Throttle Linkage Kit by wednesday. I have the kit, and understand what the end result should look like but a step by step would be helpful … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
Ering a Bertram Purchase and switching from Freshwater Lake
ering a Bertram Purchase and switching from Freshwater Lake usage to Salt Water … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
Flemming from DK here. So now I'm almost done with the
Hi Jason, Flemming from DK here. So now I'm almost done with the wiring on the engine, that you very succesfully helped me with. I'm looking at the switchboard and ignition key now. Quick question, is… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
I have a 1993 Yamaha outboard 2 stroke. Which is only
Hi I have a 1993 Yamaha outboard 2 stroke. Which is only running on two of the three cylinders … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
I have recently purchased a second hand boat which has a
I have recently purchased a second hand boat which has a HDS5X fitted but I cannot get the split screen to disappear, could you please give me some advice. … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
I have an issue with my 1998 25hp NMO Autolube Yamaha. It
Hi I have an issue with my 1998 25hp NMO Autolube Yamaha. It has a backfire/sneeze on tick over only, it is fine through the rest of the power range. I have taken the carbs off had them fully cleaned … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
Iwant to install a bow thruster on my Sea Ray 240 OB, 2015.
Iwant to install a bow thruster on my Sea Ray 240 OB, 2015. Will it work? Do you recommend it? … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
Is there a bow thruster that will work on a sea ray 240 sun
Is there a bow thruster that will work on a sea ray 240 sun deck? Can it be installed where boat is stored?… read more
Boat Doc
Boat Doc
144 satisfied customers
I've got a 2006 5.0 mpi with 500 hrs on it. It had new
I've got a 2006 5.0 mpi with 500 hrs on it. It had new manifolds and risers 12 months ago, 40 hours use since. Have noticed rough idle and needs a bit of throttle to start, then low power on take off … read more
Boat Doc
Boat Doc
144 satisfied customers
I have to change the hydraulic trim/tilt pump on my 50 hp
I have to change the hydraulic trim/tilt pump on my 50 hp mercury, will I have to remove the motor from the boat to do it? … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
Slow cranking then will crank normily be for starting. Some
slow cranking then will crank normily be for starting … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
Do you have to remove engine on invader inbd /outbd
do you have to remove engine on invader inbd /outbd merccruiser engine to replace starter … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
I have an 8 horsepower Honda outboard motor that I have just
Hi I have an 8 horsepower Honda outboard motor that I have just swapped over to my pontoon boat and I'm having a problem with the alarm going off when I'm putting them in the back together I got every… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
I have a 130hp v4 that runs and idles but when you put it
I have a 130hp johnson v4 that runs and idles but when you put it gear it and rev it up it brakes down and back fires any sugestion would be greatfull regards gary… read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
I have a volvo penta v6 4.3 gas 1999. My volvo dealer just
I have a volvo penta v6 4.3 gas 1999. My volvo dealer just sold me a set of aluminum anodes part #(###) ###-#### and (###) ###-####for my out drive. my question is, is that correct??? My boat is in sa… read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
My Edgewater 17 has a Yamaha 115 outboard when I turn on the
My Edgewater 17 has a Yamaha 115 outboard when I turn on the ignition it's starts up okay but the buzzer doesn't shut offR … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x