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  1. Lou C

    2007 Volvo penta 4.3 gxi-j blowing hose of thermostat housing.

    The o ring holds the thermostat in the housing, you have to pry the o ring out then the stat will come out. OMC & Volvo used the same exact thermostat housing. If there was no water in the block, the temp sensor has no water to read so the engine could have been hot but with out water there's...
  2. Lou C

    Volvo Penta 3.0 GLP-D Choke/Starting Issue?

    This is a Holley 4bbl, you have a 2bbl but the choke heater is the black plastic cylinder shaped piece with 2 electricial terminals on it, the + goes to the AC tap terminal as Bruce said and the - goes to ground. The electric choke closes by spring pressure and it opens with a constant 12V...
  3. Lou C

    2007 Volvo penta 4.3 gxi-j blowing hose of thermostat housing.

    When the engine is cold, the water from the impeller pump has to bypass the engine to the exhaust system, where it then exits overboard. There is a bypass port in the thermostat housing that has to be open for this to happen, the other possible cause is that your exhaust elbow are clogged with...
  4. Lou C

    Help with water in oil

    the bigger cause of water in the crankcase is a rotted intake right under the thermostat housing, but if you run it long enough with water getting into cyls, even not enough to hydrolock it, there will be a fair amount of water in the oil.
  5. Lou C

    Help with water in oil

    You would have had water in a cyl from that, did you have misfires, reluctance starting and possible hydrolock? With water in cyls when its just a little you start out with reluctance to start on an engine that used to start easily, then misfires till it warms up. In worse cases you get slow...
  6. Lou C

    Help with water in oil

    Hard to say but if one cyl is rotted like that others could be but you might not be able to see it. What does the block deck look like? From what I’ve heard the heads rot through faster than the blocks. I had 2 blown head gaskets and remove the old heads on mine. Had them checked at a machine...
  7. Lou C

    Is there a better gear oil pump out there?

    Cobra is different, you fill from the middle plug till it says full on the top plug (dipstick).
  8. Lou C

    VP 5.7 Gi-300-J overheating

    Nice to hear it was a simple solution’
  9. Lou C

    New motor knocking???

    I had milky oil like that simply from blown head gaskets. The heads were cracked from a previous overheat but that's not how the water got in 2 cyls and the oil. As it turned out the repair wasn't that complicated. Replaced the heads with a reman set and it was all good. Got the water out fast...
  10. Lou C

    Is there a better gear oil pump out there?

    been like this at least 10 years lol. without the clamp I think they suck air and don't pump right.
  11. Lou C

    Is there a better gear oil pump out there?

    I have a Merc one I bought like 15 years ago and put a hose clamp on the hose on the pump end this seemed to make it work consistently. I have a few of them for the Jeeps for gear oil & transfer fluid changes.
  12. Lou C

    Exhaust Flappers

    agreed if Merc could have saved money by eliminating them they would have, so if they were there, they are needed.
  13. Lou C

    malibu 5.7 mercruiser

    Yep the Quadrajet is a 4bbl, if yours is flooding like that, then there is probably a bit of grit holding the float open or the needle valve is not sealing. The rebuild is not hard but there are some tricks to getting the air horn off, and on, and you have to really clean out the idle air tubes...
  14. Lou C

    New motor knocking???

    Clean up the sealing surfaces as best you can and check for flatness with a straight edge & feeler gauges (less than .003”) I used Fel Pro marine intake gaskets on mine and they sealed well. Make sure that the bolt holes in the heads are clean.
  15. Lou C

    Can someone PLEASE tell me which bellows are which? taking on some water...

    Same here. Outboards from now on. Life is too short at this point to be fiddling around with all the extra hassles and if you price modern I/O parts prices vs outboards they are just as bad; but with all the designed in headaches of I/Os. Mechanics here in the salt pond refer to them as “double...
  16. Lou C

    Can someone PLEASE tell me which bellows are which? taking on some water...

    You’re welcome! I’m in a salt water region and have an old boat used in salt water approx 20 years. While salt water corrodes all metals it’s less likely to rot wood. Fresh water actually causes more rot. As legend has it the bacteria that causes wood rot can’t live in salt water...
  17. Lou C

    Can someone PLEASE tell me which bellows are which? taking on some water...

    Go back to the first parts diagram I posted, The transom seal is part #65 it’s a loop gasket that goes around the inner side of the transom mount, yes these can leak but often it’s a transom with the wood coring getting soft after all those years. Unfortunately this repair is VERY involved: Pull...
  18. Lou C

    Can someone PLEASE tell me which bellows are which? taking on some water...

    No. The only way that running the engine on the muffs will put water in the bilge, is if your hoses for the exhaust system, or the gasket where the exhaust Y pipe is bolted to the transom mount leaks, or if the Y pipe rots through somewhere and leaks. Rusted exhaust manifolds and elbows can...
  19. Lou C

    Can someone PLEASE tell me which bellows are which? taking on some water...

    Bottom one is the exhaust bellows, it will usually have a series of slits in it, this and the exhaust Y pipe are both full of water when the boat is in the water, that water will be nearly up to the level of the rubber hoses that come down from the exhaust elbows onto the Y pipe on each side...
  20. Lou C

    1985 OMC 3.8 v6 exhaust manifold questions

    1 1/2” So based on your pic even the Barrs would be to big to fit without grinding.
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