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    Nose blown of new aftermarket starter 3.0l

    Hi all just finished installing an new head on my LX and went to start it and it started nice then stumbled. I went to restart it started and then all of a sudden there was a clatter the engine stops and would not rotate when the key was turned on the ignition giving me very bad worries further...
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    Merc 3.0 rocker stud lifted - repair advice ?

    Hi all further to my stuck valve issue we found that the stud for the rocker in pot 5 was torn upwards by 3/8 inch we applied 40 ft ib to it and it doesn’t hold. we will need to extract it and find a way to refix it to its hole. the engineering shop suggested knurling it and loctite back in...
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    3.0LX Base Timing Question

    Hi All, I was trying to set the timing on this motor the other day. What I did was I verified pot 1 TDC using the finger in the plug hole technique for firing stroke, then fond the notch in the crank pulley was visible so I marked it white. I then connected a jumper wire between the 2 white...
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    Engine running check - look ok ?

    Having adjusted the throttle cable and set the idle I just wanted to post this and see if everything looks as it should before hitting the water. in tje video I have adjusted or am in the process of adjusting the idle / cable to the carb. how does she sound ? https://youtu.be/myjJ5imURO4
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    3.0LX throttle cable adjustment / idle too high

    Evening all. jistvjadctjr engine running and noticed that when I set the control to neutral the idle hangs ar 1500rpm sometimes 1200 rpm and if I push the cables towards the carb the idle drops to where it stalls, so I adjusted the stop screw with the spring on the carb clockwise but that just...
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    3.0LX starter motor install issues - bolts

    Hi all went to install a new starter today only to find the bolts that came from the original motor were too long leaving the starter somewhat loose. have I missed something here like a spacer ? this is the one I got from cross referencing the OEM part number...
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    Starting and High current draw issue Merc 3.0LX

    Hi All, I wonder if you can help me with this. We have a new to us boat and we have had it starting and running nicely and know compression is good and there are no major mechanical issues. Its been stood for a few months since last starting it and we came to start it today with little...
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    14x19 stainless 3 blade vs 14.5x19 aluminium

    Hi all, I have been offered a stainless 14 x 19 stainless prop for very good money to run on a bayliner Capri 1850 fitted with a 3.0LX motor. the original prop is 14.5 x 19 and I’d like to ask what the effect of the 14 would be ? is it suitable ? What would the trade off be ? use of boat is...
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    Trim Pump Bracket Replacement - old mounting holes

    Pulled the rusty rotten bracket, the old mounting holes are shot and no way to get the old headless bolts out. i plan to drill new holes and used stainless self tapping screws that are heavy duty - any issue with that method ? thanks
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    2 Homemade bellows tools

    I'd just like to share 2 tools I made at home to help install the bellows on the gen 2 OD The exhaust tool had the bellows on in seconds with little issue.
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    West Coast Trailer - hitch pin stuck fast and more

    Hi All we just got a bayliner Capri with a west coast trailer. the trailer has a pivot on the hitch and has hydraulic brakes. ther is a retaining pin that passes through the main member about 2 ft from the hitch. The pin is stuck fast so we can’t open up the pivot in order to connect the hitch...
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    3.0 Exhaust Manifold Removal ?

    Quick check, im pulling the manifold on the merc 3.0, removed 2 nuts on studs and 2 bolts under riser but the darn thing won’t budge - is there anything else holding it on or just the gasket making it stick ? thanks rake
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    Prop Selection Help please - Bayliner 1850 SS with 3.0L LX

    As above - What would be the optimim selction for Bayliner 1850 SS with 3.0L LX motor fitted ? Use will be mixed cruising and sports, 2 - 6 passengers. Standard I think is 14 x 19 but can we improve on that ? Thanks
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    3.0 140 & Aloha 1 gen 2 - things to look out for ?

    Off to view a Capri 1850 as fitted with the 3.0 LC and aloha one gen 2 out drive. its a 1994 engine that has not been run for 3 years. Last time it ran I was out on the water with it. the boat is a steak at $900 as the owner lost interest. any checks that you can suggest ? I’ll be doing...
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    Starter motor bolts too long ?

    Hi all I just bought a new PMGR style starter and went to fit it but could not as the original and some replacement bolts that were fine on the old starter but too long to clear the armature of the new one - please see images only options I see are to either cut the bolts - reducing grab, cut...
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    How to install coolant temp warning light on a 470 with high temp alarm ?

    Hi all, hope this is the right place for this question I have a mercruiser 470 that has the OEM low oil pressure / high coolant temp alarm fitted already. i have successfully installed an oil pressure east Inv light and wanted to also install a coolant high temp warning light too. can anyone...
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    Mercruiser 470 - How to connect later type starter motor ?

    Hi All, I just got a new PMGR style starter to replace the old Prestolite on my 470. Can anyone advise how to wire the PMGR in and of course still retain the slave solenoid ? I understand that the red tot he battery goes to the positive large terminal on the starter, but what about the other...
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    470 Compression results after engine rebuild

    Hi All, ive just installed the 470 after a full rebuild and she runs nice and quietly but I have odd compression results. tested cold I get 100 125 115 120 i would have expected closer to 150 psi ? now the head has been skimmed flat and the valves reworked. coukd the compression result...
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    470 head re torque - coolant release

    evening all. i jist re torqued the head on my 470 according to the manual and this post https://forums.iboats.com/forum/engine-repair-and-maintenance/mercruiser-i-o-inboard-engines-outdrives/635086-3-7-mercruiser-re-torquing-head I ran the engine is a full operating temperature and then...
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    Merc Audible alarm issues and no temp reading

    a couple of days ago I started my engine (1978 470) and got a panic moment when the audible low oil / high temp alarm didn’t stop after starting the engine. A quick glance at the oil pressure gauge received the panic as it showed 40psi pressure. i then letvtje engine heat up - alarm still going...
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