Logo

Search:

Type: Posts; User: Lepke

Page 1 of 4 1 2 3 4

Search: Search took 0.00 seconds.

  1. 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...
  2. Replies
    2
    Views
    73

    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...
  3. Replies
    16
    Views
    8,055

    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...
  4. Replies
    4
    Views
    196

    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...
  5. Replies
    4
    Views
    196

    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...
  6. Replies
    3
    Views
    207

    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...
  7. Replies
    3
    Views
    207

    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...
  8. Thread: Tamd41a (or b)

    by Lepke
    Replies
    6
    Views
    275

    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?...
  9. Replies
    3
    Views
    720

    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...
  10. Replies
    1
    Views
    287

    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.
  11. Replies
    18
    Views
    507

    Re: 4-112 won't run for more than an hour

    Coil could be getting too hot. IF you're running a 6v coil on 12v, that a failure waiting to happen. If the coil gets too hot, the top pops off and oil comes out. I did that once 4 wheeling with A...
  12. Replies
    5
    Views
    335

    Re: PMC PL000000EFI 1996, Fuel Pump Issue

    Bad connection, probably somewhere in the ground. Look for corroded connections, wire brush them, etc.
  13. Replies
    7
    Views
    383

    Re: Heat Exchanger Repair

    I could fix the exchanger, I doubt you can.
    If you're loosing coolant and it's not in the oil or bilge it's usually the exchanger. It's possible to loose it thru a head gasket. You can pressure test...
  14. Replies
    1
    Views
    711

    Re: Help! Breaking free an exhaust manifold

    Probably too late, but when taking out stubborn studs, an impact wrench usually removes studs, bolts, nuts without sheering the stud. When you put it back together, use some form of never-seize for...
  15. Thread: 6v53 natural

    by Lepke
    Replies
    2
    Views
    576

    Re: 6v53 natural

    At 185 the thermostat is wide open. Any more heat and more strain is put on seals and gaskets. While most diesels run more efficiently at hotter temps, about 210 or so, Detroit doesn't like it. And...
  16. Replies
    3
    Views
    831

    Re: 6v92Turbo not building oil pressure

    I meant the bypass valve in the bottom of the spin on oil filter. The bypass is there for people that don't change their oil and filter. If the filter plugs the bypass opens so the engine gets oil...
  17. Replies
    3
    Views
    652

    Re: Droplets of Coolant in 6V92Turbo Pan

    If you can't find a source for the coolant, try putting some toilet paper around the hose connections, cooler, etc. or use something like powder anywhere coolant flows. Sometimes even a quality hose...
  18. Replies
    3
    Views
    831

    Re: 6v92Turbo not building oil pressure

    A collapsed oil filter. The filter bypass should open, but is it's a cheap filter... Is it a high hour engine? Could be bearing wear and/or pump wear, but it doesn't suddenly happen.
  19. Re: I have sighted a Detroit Diesel 451 Marine Diesel engine in Mobile AL

    671 pump should have LH or RH stamped on the end plus an arrow indicating direction. You can use an electric fuel pump rated at about 30 gph. About $20 on ebay. Also a place to look for a manual. The...
  20. Thread: 8V71N Manual ?

    by Lepke
    Replies
    2
    Views
    727

    Re: 8V71N Manual ?

    ebay is a good place to find used Detroit manuals. A parts manual would have exploded views. If you join boatdiesel.com, they have PDFs of most manuals. About $25 per year. Their Detroit forum has...
Results 1 to 20 of 70
Page 1 of 4 1 2 3 4