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    Engine intermittently cutting out

    1989 Mercruiser 5.0L Alpha One in a Thompson 240. Here is my history. I had transom work down. After getting boat back and a sea trial, it needed a shift adjustment. After the shift adjustment, the engine will cut out at various RPMs in forward. It is very haphazard...it will do it one...
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    Humminbird 1157C

    Can anyone with experience with this model give me some pros and cons to this unit. I am considering getting one. I mainly fish Lake Ontario for Salmon. Thank you in advance. Ray
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    Shift Interrupter Switch

    Hello. I have a 1989 Mercruiser 5.0L Alpha One with an LH Rotation. I had my transom replaced and I don't think my shifting got adjusted correctly. I have no problem shifting into reverse or forward, it shifts nice and smooth and does not cut-out; however, my shift interrupter switch will come...
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    Exhaust Water Shutters

    I am looking for the correct part number for the water shutters on a 1989 5.0 L (200 HP) , Alpha I mercruiser. Not sure if it is a replacement for all Alpha I's or specific part number. Thanks for your help. Ray
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    Engine dies

    I have a 1989 mercruiser 5.0L (200 HP) 305. cid alpha one drive with thunderbolt IV ignition system. I was out on the lake today and as I as leaving the channel (first thing in am) the engine cut out...no hesistation, just plain died. OK...after 30 seconds started right back up first try...no...
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    kicker motor size

    Hoping this is the right forum. I have a 24' Thompson hardtop and I am looking for a kicker to put on....question is what size. I have seen alot of similar boats that have 9.9 hp kickers. I have my eye on an 8hp four stroke...would that work? Thanks for the help. Ray
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    Kicker motor size

    Not sure if this is the right place....here goes. I have a 24' Thompson hardtop and I am looking for a kicker to put on....question is what size. I have seen alot of similar boats that have 9.9 hp kickers. I have my eye on an 8hp four stroke...would that work? Thanks for the help. Ray
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    Happy Veteran's Day

    Thank you for all that have served and those that are.....you are appreciated! The Soldier He was getting old and paunchy And his hair was falling fast, And he sat around the Legion, Telling stories of the past. Of a war that he once fought in And the deeds that he had done, In his exploits...
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    oil filter

    Good Evening. I have a '89 Thompson Merc. 5.0L Alpha I. I went to the store to get an oil filter. However, the one on then engine currently is the 35-866340Q02 and the store only had the 35-866340Q03. Is there a difference? Did the numbers change? Thanks for your help. Ray
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    spun coupler vs. spun prop hub

    Hello. Boat is a 1989 240 Thompson with a 1989 Mercruiser Alpha One with a 5.0 Litre Engine (305 CID). Transom Serial number is OC512260. Drive Unit is OC496777. Here is what happened...out on the lake trolling at 2mph (did not hit anything) and all of sudden I hear a high pitched whine...
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    Morse Shift Control

    Hello: I have a '89 Thompson 240 Fisherman with a 5.0L Mercruiser and Alpha I drive. Shifting into gear (whether forward or reverse) is sometimes smooth and then other times it seems very stiff. Giving the control more throttle is not the problem...it works smoothly regardlesss. Could it be...
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    Mercruiser Fuel Pump Replacement Number

    Hello. I need to change my fuel pump on my 1989 Merc 5.0L. Does anyone have a replacement number for a merc pump? Thanks, Ray
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    gas in oil

    Hello. I have 1989 Mercruiser 5.0L. Yesterday, I had a surging problem at the lake. Today, I searched on this site and came up with the following assessment....Fuel pump has a ruptured diaphram due to a gas smell from the oil. Also, I cannot see through the clear tube running to the carb...
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    Mercruiser Impeller

    Hello. I have a 1989 5.0L merc with an Alpha One Drive. I use this boat for fishing and while at a troll, the engine overheats, but at any higher RPM it runs in the normal range. I am assuming that it is the impeller due to the fact that it has not been changed in 3 years. I have read...
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    Water ground

    Hello. I have a 1989 mercruiser with a 5.0 Litre Alpha I drive. I just bought a downrigger speed and temperature electronic instrument and with it, it needs to be connected back to a water ground. Will the engine stud ground get me back to a water ground or is there a ground on the outdrive I...
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    Restoring a Thompson 240

    Hello. I am considering buying (very cheaply) a Thompson 24' Fishing Boat that has some floor and transome rot. <br /><br />Has anyone tackled a project like this. I am in the auto body industry, but never tried restoring a boat. I am assuming worse scenario...replacement of stringers and...
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    What GPS unit?

    I am looking for a GPS (only) chartplotter that is entry to middle of the road in price. I will mainly use it for charting hot spots. <br /><br />Right now, I am considering the Lowrance 4800 or the Eagle 480.<br /><br />Any thoughts would be greatly appreciated.<br /><br />Thanks,<br />Ray
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    OMC 3.0 Firing Order

    Does anyone know the firing order for a 4 cylinder omc engine? Thanks.
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    backfire - omc

    I have a 1984 OMC 140hp, 4 cylinder. I just had a tuneup. My problem: engine will not start and it backfires.<br /><br />I am suspecting a bad tune up job...on the invoice I just see labor...not itemized by service area.<br /><br />My guess is the dwell and timing were not set properly? <br...
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    Running great and then quit

    Here is the boat's information: 1984 OMC Stringer: 140HP, 3L, In-line 4.<br /><br />I was out on the water for about 1/2 hour and everything was normal, then the engine shut down. No hiccups, no sputtering...it just died.<br /><br />After making it back to the dock (45 minutes later), the...
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