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Type: Posts; User: Lepke

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  1. Replies
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    Re: Volvo D12 675 overheating alarm at low speed

    It could be the sensor. Since you have twins, trade the sensors and see if the problem moves.
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    314

    Re: How prevalent are rotted out transoms

    It's more common to have a rotted floor. It's usually under outdoor carpet. Out of sight, out of mind.
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    Re: Un-Related Submarine Diesel Engine Question

    Many diesels engines before WWII had exposed rockers. They were manually oiled once an hour. These engines were slow turning with a maximum rpm of about 300. Atlas, Washington Diesel and others made...
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    Re: Anodes in exhaust manifold Perkins 4.107

    To remove a rusty steel plug, nut, bolt, an impact wrench works much better than breaker bar, pipe wrench, etc. Often wrenching on a rusted bolt will twist the head off. Most rental stores have a...
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    493

    Re: Dead battery? wonk wonk

    Gas or diesel engine? Bigger battery for diesel. Battery could have something on that discharged it completely. Probably no good, but you could try charging it. For starting a regular battery, for...
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    Re: Restore it or Junk it?

    Even if it's free, you'll spend more than buying a boat ready to sail. I think it's a little small for around the world. I use to have a yard and picked up a few boats like this to keep my people...
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    Re: Raw water pump frozen

    The impeller is rubber, so if it was bonded to the housing, the vanes would tear off and allow the pump to turn. Most likely cause is frozen bearings. The pump has to be disassembled. Not too hard to...
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    Re: Low oil pressure at idle on 6.2

    Could be the pressure relief valve, usually in the oil pump. Since these are remanufactured engines, could be an oil passage plug, removed for cleaning, wasn't reinstalled. 2 psi at idle on a...
  9. Re: Male Spade Connector on Boat Rocker Switchboard broke off, is there a fix?

    It might be possible to take the switch apart and soldier wire or an extension. Sometimes there's an fuse/breaker for each switch and you can attach there (if you know what you're doing). Or you can...
  10. Re: Would like to add a temperature alarm system to my 4107

    If you have wet exhaust, there are temp sensors that mount on the hose. Usually when I start an engine I feel the raw water hose/pipe where it exits the engine, before it enters the exhaust. You will...
  11. Re: Volvo D41 smoke from breather and air filter. Help

    A compression check is a good way to eliminate valves and rings from the problem. It could be a spun bearing in the turbo. It's common in older engines or engines with poor maintenance to have the...
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    502

    Re: Volvo penta power issues

    I'd do a compression test. One or two cylinders might not be giving their share of power from a ring or valve problem. Could there be some intake air restriction the other engine doesn't have? I...
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    Re: 6-71 engines bubbling

    Cavitation is a problem in high hp diesel engines. Wet or dry. It is the forming of bubbles on the surface of the water jacket. When the bubbles pop it causes pits in the water jacket. More...
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    Re: High oil in 4.107

    British machining about the time of your engine required a lot of hand fitting and filing. Not like today where you can buy a part, replace it and go. You'll see if you read about replacing the...
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    Re: High oil in 4.107

    Most likely the seal on the front of the pump.
    The 4108 is used in farm equipment, probably the 4107, too. So a farm equipment dealer is one place to look. Best bet on timing is talk to a shop the...
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    Re: Perkins 4107 coolant system problems

    Reassembling your engine? That changes things. If you had the head off, some head gaskets don't have all the holes for water passage between the head and block. They can create spaces for air to...
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    Re: Perkins 4107 coolant system problems

    Ran at idle? The could be air pockets in the hoses, etc. Sometimes the thermostat will keep some of the air from purging. If you were at idle, the thermostat may have never opened because the air...
  18. Thread: Tamd41a (or b)

    by Lepke
    Replies
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    735

    Re: Tamd41a (or b)

    Too much soot is too little air with the fuel. Anything that restricts air flow in or out of the engine is where to look. Besides what you've done, is there enough air coming into the engine space?...
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    Re: AQAD40B overheating

    I had a yard and fixed a number of heating problems not solved by other yards. The most common fix was cleaning the coolant side with a good descaler that removed rust. A lot of owners run water only...
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    Re: Low rpm at full throttle

    I don't think you'll make a big difference. For higher rpm either a smaller prop, less pitch, or some combination. To go faster, bigger motor or lighter boat.
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