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  1. K

    Volvo Penta AQ131D getting hot

    Post a side profile picture of the drive. There are 2 places where air can enter the incoming water and we can point them out.
  2. K

    AQ125 water leaking into bilge

    These are the Sierra Marine part #s for replacing the manifold. 18-1930-2. Manifold 18-2991-1. Gaskets 18-8539. Mounting kit 18-3889. Seals When you contact Sierra double check what is included with the manifold. Items ending in 91-39 may come with the manifold. Be sure to order the seals...
  3. K

    Alpha One Gen 2 - Trim will only go a few inches down

    2Xs on the piston check balls and springs. Be real careful and work over something that will contain anything that falls.
  4. K

    AQ125 water leaking into bilge

    The manifold has to come off, it may be possible that the inner bore for the core plug is eroded. If that is the original manifold it needs replacing. The inside of the manifold at the exhaust outlet by now will be also eroded.
  5. K

    Volvo penta 225d over heating problems

    The pump is on the front of the crankshaft. Most times the pump is not the problem but it must be checked first. It is held on with 3 bolts on the crankshaft pulley. Post a side profile of the drive unit as there are 2 other places that can cause an overheat condition.
  6. K

    Closed water cooling 5.0L Mercruiser

    Mercruiser recommends when a belt driven pump is used with fresh water cooling to connect the incoming water from the drive to the raw water through hull intake in a “Y” connection. This way the engine can be ran with the ear muff on the drive. I did the exact same thing on the Donzi I had.
  7. K

    I have a 1989 mercruser tops out at 3000 rpm

    Is this carburetor the original one that let the engine go to 4500 rpm?
  8. K

    1991 Ford 302 5.0 HO omc stern drive engine backfiring under load only not in neutral

    When you remove the filter dump it into a clean bucket. If there is water you will see it separating from the gas.
  9. K

    I have a 1989 mercruser tops out at 3000 rpm

    It appears that you have fuel injection. There is a switch on the shift linkage that prevents the engine from high RPM if the drive is not fully engaged. This switch needs to be checked.
  10. K

    Fuel issues

    It could be the fine mesh filter that is in the suction tube in the tank. These things really can cause a problem. You will have to remove the fuel hose fitting that screws into the tank. The tube is screwed into the 90* elbow then you push the filter out and pitch it.
  11. K

    First time pulling an engine questions

    The timing cover is the least painted part of these engines. Before installing the harmonic balancer, put some sealer in the key slot of the balancer. Looks like you are close to the end, you will be fishing before you know it. My cousin has a 2820 Sport Cabin Parker with 2 Yamahas. This is his...
  12. K

    Alpha One Gen 2 - Trim will only go a few inches down

    The end cap seals are easy to replace and he parts are not expensive. SEI trim rams will work and hold up. Just depends on the $ question.
  13. K

    I have a 1989 mercruser tops out at 3000 rpm

    Make sure that the choke linkage secondary “lock out” on the carburetor is allowing the secondary air valve to open. With the flame arrestor removed hold the choke butterfly open and try to push open the air valve. Which carburetor do you have, Rodchester or Weber/Edelbrock?
  14. K

    Alpha One Gen 2 - Trim will only go a few inches down

    If there is enough fluid in the pump, then ram packing has tightened it self around the extended rods. First try spraying some penetrant on them then have someone put their body weight on the drive while you press the down switch. If you can get them moving they may free up completely. If you...
  15. K

    1989 5.7 omc propeller not spinning

    In the meantime try to remove the swim step which will be a big help for when you start replacing the cable and re installing the drive. You will also need a 1/2” Allen wrench to unscrew the pivot housing bolts. Add a new drive shaft bellows to your parts to replace also.
  16. K

    Firing order HELP

    Rotation is determined from the flywheel forward. Not the front. 1-4 starboard side 5-8 port side. The picture you posted has the star on #2 wire. Counting clockwise from the star which is on #2 wire it is 7,3 then the #1 The firing order that Scott posted is correct.
  17. K

    1989 5.7 omc propeller not spinning

    First get a genuine OMC service manual for the model number that you posted. Disconnect the lower shift cable and try pulling and pushing to see if the drive can be shifted. Sometimes the propeller shop did not press the hub all the way in. Is the thrust washer on backwards? When was the last...
  18. K

    First time pulling an engine questions

    With the flywheel housing on a drill press you should be able to drill out the broken bolts. The engine mount “feet” might be saved after sand blasting, you probably have a torch to heat up the nuts to free them up. The threaded part can be replaced with generic ones. Also a good time to find...
  19. K

    1989 Bayliner Trophy OMC 5.8L - Help with new boat

    Post a picture of your current cables. The shift cable from the control box must travel 3” from full forward to full reverse.
  20. K

    Pulling engine - need help with transmission disconnect

    The flex plate is rusted to the transmission shaft. Look in the hole where the starter mounts, remove the bolts mounting the plate to the flywheel. Then unbolt the flywheel housing from the rear of the engine. if you need to remove the flex plate you will need to cut it off with a cutting...
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