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Vacuum chart is in the manual and it's copy and paste since the beginning of the time just because its simple engine with OHV. That's...
Aug 7, 2026
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Once agian thanks for your time and effort- much appreciated.
Battery probably needs replacing but 10-10,5V voltage drop during cranking...
Aug 7, 2026
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Attached file with two latest recordings. Please feel free to comment if you notice something unusual
Aug 6, 2026
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Hi everyone. Is someone here who has or can get Diacom recording for 4.5l 250HP Mercruiser? I would like to get them to compare with my...
Aug 6, 2026
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If you want you can install Diacom and check files. If free and it will work. I will appreciate another point of view.
Aug 6, 2026
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I checked in service manual its a keyway.
Aug 6, 2026
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I will do and hope will find it with your help guys
Aug 6, 2026
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Took that sensor out earlier to check for potential dirt - I guess its magnetic. I will try with screw driver but will I see any...
Aug 6, 2026
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Unless you have the specs your ''ball park'' is guessing as well ;)
Aug 6, 2026
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Can you tell from drawing below. I can't see key there.
https://www.mercruiserparts.com/bam/subassemblydetail/51242484/28214545
Aug 6, 2026
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I know fuel trims and, o2 target and o2 sensor response looks perfect. But what in the situation that the timing is wrong. What if fuel...
Aug 6, 2026
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Thought you noticed that I don't write like native.
The only time theboat is connected to power here is to charge battery and...
Aug 6, 2026
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17-21"Hg probably some general info found online - sorry my bad. But there is page in service manual for this engine that specifies...
Aug 6, 2026
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They didn’t mention any problems with the keyed ones in school, good to know.
I’m guessing that at least you could poke something...
Aug 5, 2026
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NO.
I keep saying these MAP readings are normal.
While I don't have any other 4.5 Diacom REC files to compare (I have always used Mercs...
Aug 5, 2026
Like.
