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  1. 4

    Mercruiser Alpha 1 Gen 1 (1986) bellows replacement

    I did a bunch of searches and can't find exactly what im looking for - i just boat my '86 sea ray amberjack with twin 4.3 mercruisers a) Is there an advantage to buying genuine merc bellows kits VS sierra bellows kit? b) i got a copy of the service manual from a link i found on here, but am...
  2. 4

    1987 4.3 v6 Mercruiser - Looking to buy what to look for

    After google-ing and posting here about some 170 4cylinder mercs that i should avoid, i've turned my attention to a different boat that has twin 4.3 mercruisers in it, vintage 1986. I hear there is a 4.3 and 4.3LX, i think these are the NON-LX motors... Are these solid motors? Are the drives...
  3. 4

    Vintage 1986 170 4 cylinder mercruiser and drives - Help !

    Im looking at a boat that has twin 1986 "170" 4 cylinder mercruiser engines and drives. the boat is pristine but has 1400 hours on it. questions are a) anything i should be aware of that these engines may be notorious for? b) what is the drive called? is it an alpha? or something else? are...
  4. 4

    Buying twin engine boat, how big of a difference between Twin V8s, Twin V6's, and T-4

    Greetings, im looking into 27' sea ray amberjacks to purchase and im seeing the same model boat with twin 4 cylinders, twin 6's, twin 8's (5.0 and 5.7s). With such a wide range of power im wondering a couple of things. The boat will be used PRIMARILY for trolling (2.0mph) about 1 - 5 miles...
  5. 4

    buying a used boat - what to look for?

    I currently own a 18 sylvan with 150 outboard, i've become solely interested in boating on lake michigan, and have been for years now so in spring im looking to take the plunge and go 21-28' boat, fiberglass. i've grown tired of bouncing around in even mild chop in my aluminum boat so heres the...
  6. 4

    '98 Mariner 150 mag efi stumbles/dies for first 5 minutes then runs like champ

    Everytime i put the boat in for the first time for the day, i start motor, it starts then stumbles/dies. I end up having to start the motor on fast idle and let it sit there for a few minutes before i can return the throttle to neutral (true idle). Then when i go to shift to leave the dock the...
  7. 4

    1998 mariner mag efi - Hard start/running when cold

    Problem is the motor seems to have way too hard of a time getting started when cold. When i say cold, i mean the air temp is 35-40 degrees, water temp is 33-34, and the engine hasn't been run in days. I usually need to advance the throttle to 1/4 to 1/2 throttle for it to start, and usually it...
  8. 4

    1998 Sylvan - Rebuild transom from 20" to 25" ?

    Greetings, i fish in rough water frequently, and my 20" transom is killin me... i'd love it to be 25", it's the only thing that bothers me...are there places that will remove and replaced the transom with a 25" instead? I know I'll need to get an extension on the outbaord but im just wondering...
  9. 4

    Worth moving batteries forward??

    I have a 18' aluminum fish/ski, with a 20" transom and 150 mariner on it. When in semi-rough water (1-3 feet) i frequently get water over my transom. Now i know this is kinda normal. But what im trying to do, is remove as much weight from rear, and move forward. what sucks even more is the build...
  10. 4

    1998 mariner mag efi - Erratic Tach

    Ok my tach acts WEIRD. Plan and simple. Sometimes it works just fine (reads about what the engine sounds basically) but sometimes it will randomly jump around. For instance, i've started the motor once, motor was idling normally, and the tach read 3,500 steady. It was obviously NOT anywhere near...
  11. 4

    Diagram inside - Is it ok?

    Greetings, i've seen a bunch of wiring diagrams, and came up with this setup for MY boat. Is this ok?? I know this is already close to blue sea's diagram but my questions are: 1) is extending the calbes ~15' using blue sea powerpost cable connector ok? If i read the west marine site right the...
  12. 4

    1998 Mariner 150 Mag EFI -> change from 20" to 25" ?

    Greetings Im wondering if mercury sells a "kit" that would make my 150 mag efi mariner 1998 model year engine a 25" instead of a 20" transom setup? Reason being is that when at dock, theres only roughly 4-5 inches of clearence between the water and the top of the transom where the motor...
  13. 4

    1998 Mariner Mag EFI 150 - Runs Rough then Dies

    Here's the story. Was out the time before last, and on my way back to the dock, the motor dies instantly, then 2 seconds later keeps running like nothing happened. I just thought, that was weird, then motored back another 10 minutes to dock. As i reach idle getting near the dock i thought the...
  14. 4

    1998 Mariner Mag EFI 150 - Tell Tale acts weird

    Ok so this motor is new to me, when i first toke it out on the water the tell tale didn't start spittin till like 30-60 seconds after it started, i was about to shut her down because it wasn't spittin!! So it starts spittin slowly after those 60 seconds or so, then after driving it normally for...
  15. 4

    Trailer Blows Trucks Fuses - What?

    Ok i have a 2005 f150. I've been towing my four winns on a shoreland'r trailer for years but was using the 7pin to 4 plat converter harness. I just now recently purchased a different boat and since the 4 flat harness was long i just plugged it directly to the truck's 4 flat. (the truck has tow...
  16. 4

    What to look for in used 1998 Mariner 150??

    Looking at buying a boat with a mariner 150 horsepower, EFI two stroke outboard on it. I will be running a compression test on it before i buy, but what numbers do i look for? I know they all should be within 10% of each other, but whats good? 115 psi per cylinder? higher/lower? Also i will...
  17. 4

    What to look for on '97 150 Evinrude Intruder

    Im looking at a 97 boat that has a 1997 evinrude intruder outboard. Anything in particular i should look for when checking out this motor? I plan to do compression test, run the motor on muffs, do a slight rev and listen to idle and see how strong the tell tail (water coming out) seems...
  18. 4

    VIDEO! 1996 Volvo 3.0 GS - Cooling Hose Throbbing and Bursting

    Ok motor only has 190 hours on it, original from '96. Boat winterized most of it's life, bought it with 22 hours on it. It sure seems the original owner ran it without a water supply or in water and busted up the sea water impellar because when it first burst a hose i found the line that runs up...
  19. 4

    Trolling Plate - Too slow - Drill Hole ?

    Hey guys, my 96 , 17' four winns with 3.0 Volvo Penta is used for trolling. I run a 20 pitch prop and recently installed a trolling plate to slow the boat down to 1-2mph without idling the boat so low the engine shakes and loads up on fuel... welll i did that now i need to actually run the motor...
  20. 4

    Volvo 3.0 GS PCNA Impellar - Is this installed right?

    Greetings, As a part of normal maintenance i removed the old impellar out of the sea water pump (runs off engine drive belt, NOT in the drive) and went to install the new one with volvo penta supplied lubrication, and made sure the fingers were bent in accordinance to the way the belt turns the...
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