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  1. M

    Mercruiser 5.7 MCM carb low idling

    Hi Scott, Thanks for your extensive reply. The TKS solenoid switches off as the oil pressure switch is operating well. This is easy to check based on carb sound and solenoid temperature itself. Thus, as long the engine is running the solenoid receives current, closes within 8-10 minutes and...
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    Mercruiser 5.7 MCM carb low idling

    Hi Lou, thanks for your extensive reply. Totally correct remarks. Fortunately the engine has been overhauled by a professional mechanic just before I bought it. Exhaust manifolds, risers and impellor have been replaced by new OEM items. As you stated I am not necessarily concerned about the 175F...
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    Mercruiser 5.7 MCM carb low idling

    Hi, thanks for your answer. No alterations have been made by me. I have this boat and this engine for a couple of months now. The engine has since my ownership always hit 175F and no warning buzz. I checked your statement and indeed seems hot (open cooling system). Manual states 160F. Since...
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    Mercruiser 5.7 MCM carb low idling

    Hi guys, Always awesome here, the knowhow everyone shares. I have a minor question. My 2007 merc 5.7 TKS carb 2 barrel engine runs great but (tends to) stalls on me when hot and gets back to idle speed. It starts "stamping (galoping?)", oil pressure up and down, even low voltage 11V. RPMs 650...
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    Mercruiser 5.7L MCM TKS Carb mechanical sound

    It was the TKS carb, after cutting of the air flow on the carb I immediately noticed the mechanical clatter noise was impacted by that. I cleaned the carb air/fuel passage and the solenoid closed, hence stopped enrichment. Case solved, no. The 20A fuse was blown, meaning the temp switch didn't...
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    Mercruiser 5.7L MCM TKS Carb mechanical sound

    Hi all, The TKS carb is giving a mechanical clatter sound, not meant here is the normal suction sound from the TKS enrichment module at cold start proving extra fuel. The TKS module has been tested by me to be sure and is ok. During the last outage the engine was hot and stalled at low rpms...
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    Startmotor 3.0L bendix difference?

    Thanks. I reinstalled the new startmotor ... and it works fine now. I have no idea why two earlier attempts didn't work. The two bolt assembly is straight forward so no misalignment can occur. Somehow it didn't travel all the way up eventhough battery power was also okay. Anyhow, it works, see...
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    Startmotor 3.0L bendix difference?

    Thanks, because I tested (see vid... low battery though) ... and the drive pinion pops out fully at the pinion stop. Bendix length is okay ... can't find the difference. Hmm, going to install it on the engine once again. If that doesn't work out I indeed get the experts to look at it.
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    Startmotor 3.0L bendix difference?

    Thanks, going to try that and I have the old one to try first cause it looks tricky considering that spring ... But it makes sense what you say that it lacks the full length or spring tension to grab the teeth properly.
  10. M

    Startmotor 3.0L bendix difference?

    Hi all, Installed a new startmotor on my 1997 3.0GS Volvo Penta but got grinding noise when starting so it doesn't interact with the flywheel well. When comparing the old and new one I noticed a difference in bendix size. Teeth # equal, diameter equal. The new one is the black one and the...
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    3.0GSMBYMCE missing bypass in thermstat housing ? Assess solutions...

    Hi All, Main issue #1 : Cracked 3 exhaust manifolds, thinking bad casting work / valve lash heating up issues, etc and now found out, stupidly, that in thermostat housing 3850764 there is NO bypass hole to let cold / mixed water into the exhaust manifold as supposed to the design drawings. It...
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    3.0GSMBYMCE smoke from PCV (& thus through carb), 30 psi oil pressure (& dieseling)

    3.0GSMBYMCE smoke from PCV (& thus through carb), 30 psi oil pressure (& dieseling) Volvo Penta 3.0GS MBYMCE Noticed after shutdown : dieseling, smoke coming from flame arrestor / PCV valve pulled : coming from a top of the cylinder head. Seems engine is hot. Watertemp. ok, full pressure, temp...
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    3.0GS water intrusion with unclear failure mode

    Hi all, My Glastron 175SE got refitted with an 3.0L GM motor built up from several components of my former engine (GSMBYMCE) as I had severe water intrusion. Essentially we only recovered the electrical harness, had the carb rebuild and replaced all the casting and internals by basically new...
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    Identifying 3.0GL (1994) power output

    hi, thanks for helping JerryJerry05, I start to believe it is 135 HP indeed, and considering your contributions here I guess I shouldn't question further. I am aware of the parts database. I believe the carbs differ between this GL and my GS. I am also aware of the engine list from...
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    Identifying 3.0GL (1994) power output

    I am considering to buy a Volvo Penta 3.0 GL MMDA newly built in 1994. I have a Clymer service manual 1994-2000 stating the GL has 120 HP power output. As I had a 3.0GS (GM Superior output : 135HP) I can image the GL has less (GL Limited output < 135HP). The thing is that ONLY the service manual...
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