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About Jeff Grigg
(Top Expert on this page)

Expertise
Can help with most any question related to outboards, high performance, hull repair, rigging, if it floats and uses a motor. From a 9.9 on a aluminum boat to DFI two strokes. Outboard motors are my specialty. I can help with some I/O questions as well. Ratings are the only way we know if we are helping. If you are pleased with the help, please rate us. 20% don't bother reading my answers! If you are not going to read the follow up then why ask? Keep in mind we do this at no charge and are not paid. We do it to help you!

Experience
32 years in the marine business. Own a service facility, in coastal South Carolina certified Master Tech by Johnson/Evinrude, certified Mercury/Force, Tohatsu/Nissan. Former technical director for DMI Pistons. 30 year racing career including 3 APBA Formula V National Championships

Organizations
AMTECH, APBA

Publications Written For
Boat & Motor Dealer, Car Classics, Custom Vans (tech articles), Miami News, powerboat racing column

Awards and Honors
Certified Master Technician Johnson/Evinrude

   

You are here:  Experts > Recreation/Outdoors > Boat Repair > Boat Repair

SubjectDate AskedExpert

73 Glasstron Control box2/12/2008tyler boehner
  Q: i am getting ready to pick up a 73 glasstron that has one minor issue, wondering if you could help. ...
  A: I don't think so. I think you are either going to have to bite the bullet and spend a lot of money ...
yamaha 115 v4 saltwater2/12/2008Jeff Grigg
  Q: I have a problem with my Yamaha 115.every time i take the boat out it will start and idle fine ...
  A: Never, EVER rev the motor in neutral. It doesn't tell you a thing and can destroy the engine from ...
Mariner 1989or 1990 75Hp lower yoke2/12/2008tyler boehner
  Q: The lower yoke on my mariner 75 is rotted out and I need to replace it. Is there a way to lift the ...
  A: Not that I am aware of. Sorry to tell you, but that is about the worst part on an outboard to ...
won't pump water2/11/2008Jeff Grigg
  Q: I have a Yamaha V4 115 HP, I think about a 1991-2, seasonal use, stabilized and well cared for , ...
  A: Will I don't know what tools and capabilities you have so I can't really answer either. With a ...
knock2/11/2008Jeff Grigg
  Q: have a knock coming from bell housing area of bravo 2 outdrive. do not know is in here
  A: Sorry John, there is no way to tell what is knocking without examining the unit and listening to it. ...
mercruiser 470 battery2/11/2008tyler boehner
  Q: The 470 seems to take a lot of battery power to turn it over . Someone mentioned adding a second ...
  A: Great idea. When I rig a boat with anything bigger than a merc 5.0, I put in dual batteries. ...
1979 35hp Johnson not starting2/11/2008Jeff Grigg
  Q: I have a 1979 35hp Johnson outboard. The first problem is I can not shut down motor with key. In ...
  A: Theo you do indeed have multiple problems. You will need to do a compression test. Probably have to ...
73 Glasstron Control box2/11/2008tyler boehner
  Q: i am getting ready to pick up a 73 glasstron that has one minor issue, wondering if you could help. ...
  A: I have to know what engine is on the boat to give you any direction. Is it an I/O or an outboard. ...
tuning adjustment on mariner o/b2/10/2008Jeff Grigg
  Q: can you tell me how to adjust ignition timing on mariner 40hp outboard 1984-5 model?
  A: Clay timing isn't just a matter of setting the WOT timing, it consists of low speed as well as the ...
1992 Yamaha 115 Outboard2/10/2008tyler boehner
  Q: Engine died. Would crank 5 to 10 seconds it would hit breiefly once or twice. Started trouble ...
  A: Scott. I'm not much of a Yamaha tech, but I think I can give this one a good first shot. CID is ...
yamaha 115 v4 saltwater2/10/2008Jeff Grigg
  Q: I have a problem with my Yamaha 115.every time i take the boat out it will start and idle fine ...
  A: You could have a fuel problem, check to see if you have an anti-siphon valve in the hose barb from ...
Old outboard running oddly2/10/2008Jeff Grigg
  Q: I have an old chrysler 10hp outboard motor and its has been running great up until today. I was ...
  A: I would guess just from your description you may have a fuel problem, possibly some trash or gumming ...
motor locked up2/9/2008tyler boehner
  Q: a friend of mine got a 185 Johnson, mid 80's that was seized. he suspected pistons, but after ...
  A: if you can turn the prop in gear without turning the flywheel, the problem is in the gear case. If ...
Compression2/9/2008tyler boehner
  Q: Jeff, Just had a Mercury Mechanic check my 1992 60 engine compression. Reading were Cylinder 1 - ...
  A: Compression on a two stoke can be useful but at the same time can hide the truth. Best test to run ...
2000 Johnson 150 hp Tilt2/9/2008tyler boehner
  Q: The tilt motor won't shut off. I have to shut the batteries off to stop it from running. Any ...
  A: Tom. One of two things could be happening. First thing to look for is a stuck tilt trim solenoid. ...
outboard maintenance2/9/2008Jeff Grigg
  Q: Just bought a small outboard (Honda BF5A 5 horsepower 4 stroke) to power my sailboat, looking for ...
  A: You may have some trash in the carb or your carb just need some tweaking. There is an idle mixture ...
1995-SUNBIRD NEPTUNE2/9/2008Jeff Grigg
  Q: NEED TO KNOW THE FUEL CAPACITY IN THE TANK
  A: Clayton, I would have no idea. There is not one central listing for boat capacities. There are ...
trim motor2/9/2008tyler boehner
  Q: i just bought a new trim motor for my Yamaha pro 50. motor runs both was but wont raise or lower ...
  A: Probably just needs bled. to do that, fill the reservoir and run the motor up and down. fill the ...
engine does not turn over2/8/2008Jeff Grigg
  Q: i have a 5.0 mercruiser that ran fine at end of season,had it winterized at end of the season.the ...
  A: Charlie, you could have any number of problems, some minor and some not. It could be a case of some ...
cable steering2/8/2008Jeff Grigg
  Q: I have a Haines Hunter v19c with a 115 Mercury.The steering is stiff and i want to lubricate the ...
  A: The removal of the cable will depend on how much room you have in the motor well area. Disconnect ...
40 horse mercury 1990 oil injected2/8/2008Jeff Grigg
  Q: Every year the high speed jets stop up and i have to have them cleaned , which is very expensive, i ...
  A: Tim, while stabilizers are needed they, as you have found out, don't totally protect from gum ...
Tilt/trim not working2/7/2008tyler boehner
  Q: I have had a 1998 Searay 230 in storage for 14 months and have not used it. All is OK except the ...
  A: Can you hear the motor running or trying to run at all? If it won't go up or down, I would assume ...
starting2/7/2008Jeff Grigg
  Q: I'm new to boat motors, last year my wife bought me a 9.9 Johnson Evinrude [TE10RELETM]. i hooked ...
  A: Terry you should have either a fast idle handle or a way to advance the control's handle in neutral. ...
Control Box Confussion?????????2/7/2008tyler boehner
  Q: My Current control box has the Tilt/Trim and Trailer control. Can I replace with a shifter that does ...
  A: If you wire the switches on the dash right, it shouldn't be a problem. The trim wires on those are ...
1996 lund 1890 pro-v2/7/2008Jeff Grigg
  Q: I am rewiring the electrical system in my pro-v. is there somewhere i can find a wireing diagram and ...
  A: Mark, each manufacturer wired their boats differently. As for harnesses you can try the ...
Mercruiser Flywheel2/7/2008Jeff Grigg
  Q: I have a 97 5.7 merc (serial# of 786849) and my flywheel is bad. I would like to order the Ring Gear ...
  A: Tom, you are getting into uncharted territory here with this. I have never tried to find one in a ...
Primer Bulb2/6/2008Jeff Grigg
  Q: The other day after getting my 200hp Johnson Ocean Runner 2 stroke up on plane and up to about 5000 ...
  A: The primer bulb should not stay hard while running. Did it collapse? You also have a vacuum ...
1985 johnson 115 rebuild2/6/2008tyler boehner
  Q: I'm looking to purchase a 1985 Johnson 115 hp that has been completely rebuilt and is supposed to ...
  A: From what I have seen, old johnsons seem to run forever as long as it is taken care of. To make ...
Replace a empeller2/6/2008tyler boehner
  Q: When I replace a impeller for a 90 HP outboard mercury while I am in there is there anything else I ...
  A: to get to the impeller, you have to take the gear case off. Disconnect the shift linkage before you ...
Loss of RPMs2/6/2008Jeff Grigg
  Q: Jeff: I own a 130 Yamaha 2 stroke with about 150 hrs on it. Last summer, it started dropping RMPs ...
  A: Could be a number of things, but I would suspect either the power pack or stator. Both store or ...
johnson 150hp stuck in mid-air tilt2/6/2008Jeff Grigg
  Q: ..i have a 1996 Johnson 150hp. motor was parked for the winter. recently check on motor and notice ...
  A: On the side of the clamp bracket you will see a valve with a slot in it. Using a LARGE screwdriver ...
Replace a empeller2/5/2008tyler boehner
  Q: When I replace a impeller for a 90 HP outboard mercury while I am in there is there anything else I ...
  A: In the gear case itself, there isn't much else to do. You are going to want a new impeller as you ...
115Mercury idle and 2+2 transition2/5/2008Jeff Grigg
  Q: 2005 Merc 115.Carbureted. 2 cyl at idle. 4 cyl above 2000RPM. I am interested in eliminating the 2+2 ...
  A: Bill, I don't know of any modifications or way to convert the engine. While they can be problematic ...
1996johnson 1152/5/2008tyler boehner
  Q: my choke dont cut in when key is pushed in and the engine will fire but not run,however i can turn ...
  A: The red lever is working because it is a manual lever to engage the choke. To fix it, you need to ...
1996 Johnson 112 Spl /remote control2/5/2008Jeff Grigg
  Q: just got engine-no history. It stars and runs like a new one but--All cylinders always run to hot to ...
  A: You want as good a pressure reading as possible. Most of the X-flows had a small 1/8" pipe plug in ...
1996 Johnson 112 Spl /remote control2/5/2008Jeff Grigg
  Q: just got engine-no history. It stars and runs like a new one but--All cylinders always run to hot to ...
  A: The 150 to 160 would be at the very top upper limit of the temp range for your motor. You could have ...
Rough idle and dying when placed in gear2/5/2008Jeff Grigg
  Q: I have a 200 hp Johnson Looper Motor. What is a simple way to check the carburetor float level on ...
  A: There is no way to check the float level without removing and disassembling the carbs. If you have ...
Compression Check2/4/2008Jeff Grigg
  Q: My 1992 60 hp two stroke service manual does not mention grounding out the ignition in the ...
  A: What we do at the shop is use a spark tester that can be used on all the cylinders at the same time, ...
motor hours2/3/2008Jeff Grigg
  Q: how can you tell how many hours a boat motor has done? i have seen add saying the motor has 115 ...
  A: Andrew, unless the engine has an hour meter, and it has been connect since the engine was new, there ...
Yamaha 140 hp 1986 low oil pressure1/27/2008Jeff Grigg
  Q: I have a Yamaha outboard V4 140hp year 1986 which I think is not getting oil to the carbs. The oil ...
  A: Lloyd you need to do a diagnostic of the oil system. I would suggest taking it to a good service ...

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