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    Setting engine valves

    I'm not sure what besides the lifters would make them adjustable. The lifters are hydraulic and compress while doing the final 1 turn.
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    Setting engine valves

    Yes, it has hydraulic roller lifters. Went with the manual and what seems to be the more popular option and set them at 1 full turn. Thanks for the help.
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    Setting engine valves

    This is for a 5.0Gxi motor. Typical 305 Chevy vortec engine. I am setting the valves after a rebuild. I have seen (including different posts here) 1/4 turn, 1/2 turn to 3/4 turn, and the volvo manual says 1 full turn past zero lash. Any consensus as to the "correct" adjustment?
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    Confusion on 5.0OSi-E motor

    My theory was if the knock sensor was faulty, it would not detect the pre-ignition eventually leading to the engine chewing itself up. Not sure how 2 work. Is it a backup system or does one detect one side and one detects the other? I'm not sure what else would lead to the noise. The other...
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    Confusion on 5.0OSi-E motor

    When you say "this website", are you referring to iboats.com?
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    Confusion on 5.0OSi-E motor

    Thanks. That is identical to the one in my manual. Does your engine have 2 sensors?
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    Confusion on 5.0OSi-E motor

    I have a 5.0OSi-E motor in my Regal. My understanding is that this motor is identical to the 5.0GXi-E with the only difference being that the OSi uses the XDP outdrive while the GXi uses the SX outdrive. Therefore, everything should be the same for mine as a 5.0GXi. Although a google search...
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    Trouble shooting low WOT RPM - timing on the 5.0OSi

    That is all it is achieving. At some point, it has gone to 4990 (according to the ECU). My normal max is 4400-4500. Nothing on the top 40% of the throttle. Maybe that is normal for an MPI motor. This is the first one I have had so it may just be getting used to how this motor performs...
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    Trouble shooting low WOT RPM - timing on the 5.0OSi

    It maxes out at 4400 RPM normally. I think the 4600 was with the 15 MPH wind. So it normally maxes out at 4400 RPM. I can lower the throttle from full to 60% and there is no decrease in boat speed or engine RPM. It just seems sluggish out of the hole and I have never had a boat that you...
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    Trouble shooting low WOT RPM - timing on the 5.0OSi

    The boat was not running when I bought it. It had the 4.3L V6 in it when I got it. IT was trashed from salt water. I found this larger motor already rebuilt for about what it would cost me to repair and rebuild the old motor...plus I get some additional horsepower. The rebuild was done by a...
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    Trouble shooting low WOT RPM - timing on the 5.0OSi

    The plugs shown in the picture were NGK I think. They were the recommended ones from the manual. I wasn't 100% confident in them so I replaced them again this year with AC Delco 41-101 iridiums. No change. And, yes the motor is MPI. Same as the 5.0Gxi motor. Thanks.
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    Trouble shooting low WOT RPM - timing on the 5.0OSi

    The start of this can be read here: https://forums.iboats.com/threads/5-0-osi-e-low-power-unable-to-hit-rpm-wot.725345/ still trying to figure it out.
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    Trouble shooting low WOT RPM - timing on the 5.0OSi

    Still trying to troubleshoot my issue. This is a 5.0OSi-C (maybe a D...it was built in 8/2003). Took my Diacom data to a local Volvo mechanic to get some feedback and suggestions. FIrst of all, he asked if the ECM was in break-in mode. He said the ECM will limit the RPM to ~4400 RPM during...
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    Fuel pressure bleeding off 5.0 OSi-E

    In trying to troubleshoot my low power issue (you can read about that here: https://forums.iboats.com/forum/engine-repair-and-maintenance/volvo-penta-i-o-inboard-gas-engines-outdrives/10785351-5-0-osi-e-low-power-unable-to-hit-rpm-wot if you are really bored), I am starting with the basics on my...
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    5.0 OSi-E low power, unable to hit RPM & WOT.

    Background...I have been trying to troubleshoot this low power issue for a few weeks now. The motor while trying to get on plane basically stalls out at 3000 RPM until it finally gets on plane after about 10 seconds then maxes out at 4300 RPM. The boat is a Regal 2120 (21 foot boat I believe)...
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    Trying to read codes from the DLC unsuccessfully

    I am still trying to see what if any store DTC's I have on my ECM. My engine is an 5.0 OSi-E (serial 4012110198) using an MEFI 4 (4b I think) ECU. My understanding is that putting the ECU in Service Mode will cause the ECM to flash stored DTC's. I believe it is also supposed to flash code 12...
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    Anybody have a tunerpro definition file for a MEFI 4b?

    Self explanatory. Just looking to do some troubleshooting and need a definition file to use the software. Thanks!
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    Diagnosing DTC 44 (Knock sensor circuit)

    I have DTC 44 on my 5.0 OSi-E (serial 4012110198). I am going through Volvo's manual on troubleshooting and on step 5 it says to disconnect J1 and check J1-17 (knock sensor circuit) to ground. Value should be "93-107k ohms. My first question: is that 93 ohms to 107,000 ohms? That seems...
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    Unable to clear ECM codes on 5.0 OSi-E motor

    I put this rebuilt motor into my boat in 2017 and it sat all last year while we moved. Now, while it runs well, it seems to have low power and tops out at 4300 RPM (scan tool and tach both read the same). I have a Rinda techmate scan tool (picture attached) so I hooked it up to see what it...
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    Links not opening/working

    Trying to access MPI fogging procedure on the VP DIY sticky page item 21 on http://forums.iboats.com/forum/engine-repair-and-maintenance/mercruiser-i-o-inboard-engines-outdrives/366271-vp?_=1508082118469 . When I click on the link a new page opens, but it is blank. I have tried 3 different...
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