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  1. Fireman431

    Prop Guards? Yes? No?

    We have a lot of manatee where I boat and I was wondering what some of the pros & cons are regarding the use of prop guards. Are there any handling issues? Slower speed? More or less prop slip?
  2. Fireman431

    Tachometers not reading the same

    2001 Mercruiser 7.4L MPI Replaced the tachs last week. Both engine run great. Both tachs read 650 @ idle. Up to about 2000 RPM, they both read the same. After that, the port tach starts reading higher than the stbd. At 3300 on the stbd (which I'm pretty sure is dead-on), the port is at 4000. I...
  3. Fireman431

    Tachometers Reading Too High

    Here we go with another tachometer issue for the electrical masses... Boat: 2001 Carver 374 Voyager Engines: 2001 Mercruiser 7.4L MPI (x2). 425 hrs each. Original issue: Port tach would read (intermittantly) anywhere from 200-400 RPM too high. Occasionally tapping the glass face would allow it...
  4. Fireman431

    Lowrance 3500 Depth Gauge

    I need a replacement Lowrance 3500 Depth gauge (digital reeadout). Mine is losing the readout on the the number from 10' and up. I know they are discontinued, but I don't want to try to snake a new cable from the flybridge to the bilge and certainly don't want to cut a hole for a new transducer...
  5. Fireman431

    Kohler 7.3 Genset dripping

    My 2001 Kohler 7.3 Genset has developed a drip that no amount of penicillin will stop. Behind the raw water impeller housing (where the impeler shaft goes through) is starting to leak. Is it possible to get a replacement seal for this housing, assuming the housing not broken? Where can i find...
  6. Fireman431

    2001 Kohler 7.3

    Looking for the sea water impeller housing for a 2001 Kohler 7.3. Genset runs great, but starting to get a dripping from behind the housing. Do I need to get a new housing or is there a seal available that presses into the housing and around the shaft? Where can I get it? Thanks for any help.
  7. Fireman431

    Merc Engine Anodes

    I have two 2001 Merc 7.4L (454) MPI engines. Backed up by B/W Velvet Drives. They have roughly 375 hours on each. No issues, run flawlessly, yadda, yadda, yadda. The boat is kept in central Florida in brackish water all of the time. Trim tab, rudder, and shaft zincs usually last about 16-18...
  8. Fireman431

    Volvo Penta Fuel Pressure Drop

    Trying to sort out a problem with a 2007 Rinker with a VP (I believe) 502. Only 80 hours on the boat. The fuel pressure slowly drops from 34 to 0 and the engine begins to make a whistling sound. The engine whistles loudly, coughs, and pressure comes back up, then runs fine. Then it does this...
  9. Fireman431

    Interior lighting

    I have a 37 Carver which has HERA flush mount ceiling lights. I need 4-6 of the trim rings as the heat from the lights are making them brittle. I can't find a source for them and I won't buy $27 lights just for the trim pieces. Any help out there?
  10. Fireman431

    Borg Warner transmissions

    :confused:Can anyone help me with info on a couple of transmission? I have the numbers, but I can't find anything on the internet regarding year, ratios, etc. Any help will be greatly appreciated. 1) 10-04-065-905 2) 10-05-065-901 Thanks again in advance.
  11. Fireman431

    Transmission deal (?)

    Looking for info... I have a lead on 2 Borg Warner transmissions for sale. The ad reads: "Borg Warner marine transmissions. Like new condition. The bell housing are set for GM 4.3, 5.0, 5.7, and 7.4 engines. I have 2 of them. Cash only. $600 for both Don't miss this deal". My questions: 1)...
  12. Fireman431

    Missing zinc?

    2001 Mercruiser inboard 7.4L. Closed cooling system with heat exchanger. No radiator. I'm looking for a zinc in the cooling system but the manuals don't show or mention one. There are a few brass plugs on the heat exchanger and the thermostat housing, but they aren't zincs (or remnants of)...
  13. Fireman431

    RePost: Still looking for answers

    2001 Mercruiser 7.4L MPI backed by Velvet Drives. Looking for scheduled maintenance on the transmissions before I kill one. Any help out there?
  14. Fireman431

    Transmission maintenance

    2001 Velvet drives behind 7.4L MPI Mercruisers. Approximately 325 hours. Not sure what has been done to them prior. The fluid looks & smells good and the levels are correct. I was wondering what are the scheduled maintenance requirements for these trannys before I smoke one. I found out it's...
  15. Fireman431

    Won't maintain fuel pressure

    2003 Johnson 150 Bombadier 2 cycle When the boat sits for greater than 6-8 hours, I lose fuel pressure in the fuel line. It won't start and I have to re-prime using the bulb. My buddy has the same engine and he doesn't have to use the bulb if his sits for 2-3 weeks! I have replaced the fuel...
  16. Fireman431

    7.4L Mercruiser - oil through the exhaust

    2001 7.4L Mercruiser. 315 hrs. Engine runs great, but the raw water impeller took a crap without me noting the higher temp. The engine alarm sounded and it shut down around 230 degrees. I changed the impeller and the water is flowing just fine. The engine sounds great and runs well. My problem...
  17. Fireman431

    Hard Starting

    2003 Johnson 150 Bombardier Why should I constantly have to pump the fuel pressure bulb on a daily basis to start this engine. If I go to the local island for a day, I have to reprime the bulb to get the engine to fire. When it sit overnight, reprime the bulb to get it to start. Stop at a...
  18. Fireman431

    Merc 7.4L (454) MPI Fuel Pressure

    Anyone know what the factory fuel pressure setting is on a 2001 Mercruiser 7.4L MPI at the fuel rail Schrader valve? I'm trying to diagnose a possible faulty (or clogged) injector vs. a possible failing fuel pump. Any help is appreciated.
  19. Fireman431

    Mercruiser 7.4L High Fuel Usage

    Hope someone can help me. I have a 2001 Carver 374 with twin gas 7.4L Mercruisers (velvetdrive trans/shaft). The engines have 275 original hours on them and have been cared for with an open checkbook by the previous owner. My problem is the starboard engine using up to 50% more fuel than the...
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