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  1. dingbat

    VRO Failure & Life Expectancy

    Factory Manual: 1 to 4 Hg with no bubbles. Bubbles or in excess of 4Hg requires further testing Cavitation (air) could play a role as well.
  2. dingbat

    VRO Failure & Life Expectancy

    It may not be a fuel restriction but your only guessing until proven otherwise If "working" vacuum is 3Hg and you're pulling 6Hg, the pump is working twice as hard yet under the 7 Hg alarm. Question becomes... does working at double the design over designpressure relate to a 50% reduction in...
  3. dingbat

    Twin Merc V8 and different fuel usage

    Counter rotators? Swap props to see if burn figure stays with prop
  4. dingbat

    VRO Failure & Life Expectancy

    Same filter configuration here but added fuel flow and related in-line 30 micron filter in 2008 or so. It's my understanding the vacuum switch (fuel restriction) triggers at 7-inches-Hg but no idea what "normal" would be. I'm seeing reference to less than 4-inches-Hg but have no official...
  5. dingbat

    VRO Failure & Life Expectancy

    1996 Ocean Pro - 200 Rebuilt 1997 OE pump in 2005 on a misdiagnosis. Rebuild went 6 months. Replaced with new OE pump. Pump reused in 2011 short block rebuild and is currently in use. Nothing but E-10 since area mandate in 1999/2000 Have you checked on the vacuum side (tank to pump) for a...
  6. dingbat

    Need advice also on the rectifier?

    Clipper circuit? I take it you mean a diode bridge? A DC bridge is simply opposing diodes that filter the AC out of the output from the stator. The bridge is either intact or it's not
  7. dingbat

    Batteries will not hold charge

    Double
  8. dingbat

    Batteries will not hold charge

    Amp hours are amp hours..... You need more of them to run longer. The bluetop is a hybrid starting battery. You really need a true deep cycle battery for that application
  9. dingbat

    spin-on gas filter

    Great testimony as to why one should install a quality 10 micron, canister filter with clear bowl and drain.
  10. dingbat

    How much water is too much in water seperator

    I burn 1,000 to 1,500 gallons a year. Get a teaspoon or two at best.
  11. dingbat

    Johnson V4 140hp 1990 CJ140TLESE Outboard Cooling System Diagram / Repairing Thermostat

    Oops Here is the one I meant to post
  12. dingbat

    How can I troubleshoot the wrong trailer light

    Turn signals are powered via separate relay outputs. The only way this can happen is the left turn and tail light wires are switched or the left turn signal is somehow shorted to ground, back feeding the power to the tail light circuit. With the connector unplugged from the vehicle, there...
  13. dingbat

    Johnson V4 140hp 1990 CJ140TLESE Outboard Cooling System Diagram / Repairing Thermostat

    Johnson/Evinrude OEM service manual
  14. dingbat

    96 Evinrude 50 cutting out

    That advise is worth exactly what you paid for it....;) Guessing the vast majority of the "disablers" do so because they don't want to spend the money to properly maintain the oiling system. Cheaper to replace a $400 pump with a $50 pump and dump oil in the tank
  15. dingbat

    spin-on gas filter

    Not a fan of in-line rock and stick catchers. They are redundant and something else to go wrong. Got to ask, where are you going to mount this thing? I would be more concerned about ripping the mounting bracket off the "wall" than damaging a sight glass
  16. dingbat

    . . . and I Thought Hi-tech Boat Engines Were Bad . . .

    When weird stuff is happening in control systems the first place to look is the grounding system. Most new cars run an auto-sense circuit to shut down power to non-essential accessories if it senses problems in the charging circuit or a current drain. Others like my truck, are capable of...
  17. dingbat

    spin-on gas filter

    The sight bowls are heavy duty. You would damage the metal filter shell before you damaged the sight bowl. But, I could see concerns with damaging the 2-turn drain screw assembly if the unit was mounted in a location with a high probability of being damaged. In that case, I would simply go...
  18. dingbat

    Johnson V4 140hp 1990 CJ140TLESE Outboard Cooling System Diagram / Repairing Thermostat

    A 6 cylinder but a bit more detailed
  19. dingbat

    Yamaha F150 overhauls?

    Personally, would be looking for a short block. Roughly half the quoted price
  20. dingbat

    does black stain on vernatherm mean head gasket leak?

    Guessing you're calling the thermostat a vernatherm? When exposed to certain substances like acids, alkalis, or salts, the copper will react and form compounds that are dark in color. Similarly, if a copper is exposed to high temperatures for extended periods of time the surface may become...
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