|Topic Review (Newest First)|
|05-31-2011 10:18 AM|
My suggestion is based on former car trouble. I replaced the timing chain and would subsequently lose oil pressure over 50mph. My conclusion was that I had dropped a shred of gasket into the oil pan and it was being sucked onto the oil pickup screen. Lowering speed would clear the problem. It's been years, but I think I cleared it with an oil change. Of course the drain hole on the V8 was larger than that on your boat engine. I knew for sure that it was a real drop because the hydraulic valves would knock when the pressure dropped.
I don't think the po's analysis is right. You're motor would have to lose a lot of oil through a mechanical fitting to cause a pressure drop.
|05-30-2011 03:28 PM|
|imagine2frolic||Buy a pressure guage, and run the engine. You will see if the pressure drops, or not. As typed it could be the sending unit itself, and a mechanical guage will verify the pressure.........i2f|
|05-30-2011 02:54 PM|
HelloSailor, I'm in Ontario which has the Ontario Sale of Goods Act which is legislation to protect buyer and seller in a transaction. I believe there are implied warranties in there about the condition of goods. I'm not a lawyer but know of its existence so I'll have to see if it's relevant. I'm hoping that won't be necessary as the seller is a stand-up guy so hopefully this will work out without involving the law.
Cbarg, It's an analogue gauge with an electric warning.
I'll have to defer to my mechanic(s) to tell me where to start. I know my one mechanic friend thought it might be better to stop throwing good money after bad and just drop in a new engine. The cost is likely less than $6,500 compared to $?,??? for tearing it apart and rebuilding a 27 year old engine.
|05-30-2011 02:22 PM|
Originally Posted by Cbarg View Post
|05-30-2011 01:24 PM|
|Cbarg||if it is an electric gauge i would check and or replace the sending unit before doing anything drastic|
|05-30-2011 01:22 PM|
Joe, you might also want to speak to whoever did that mechanical inspection that you say the engine passed. I'd be surprised if your sales contract covered any implied warranty but...50 states, 50 different takes on what's normal.
Maybe you'll get lucky and find out it just needs a new oil pump, or the heat was opening up something (gasket) and making the pump leak.
While you're cooling down, take the wife out for a good dinner and thank her for bearing with it. And of course, bring the doggie home a bag too. (G)
|05-30-2011 01:05 PM|
@Rob. Yes... staying calm helps. "Like a duck, stay calm on the surface and paddle like hell under water." Fortunately I have the ability to acknowledge my stress level objectively and then some ability to control how I deal with it. I don't have a lot of experience skippering my own vessels so I'm sure those more experienced would have been much less tense or stressed out than I was! A first time boat owner on a first sail on the new (to me) boat, dead in the water near freighter lanes with a storm approaching. Perhaps nothing for the old salts, but stressful for me. Accomplishing this has gone a long way to encouraging my wife about the importance of being self-reliant and reducing the panic reaction - "Yes dear, we will be ok because we can do this without outside assistance." Future problems will not seem so drastic.
Wandering star, here's a little background to the engine problems...
Going into this sale, I knew the previous owner had engine issues; He rebuilt the engine and, from what I can tell, did a good job of it. However, it clearly didn't fix the issue. The good news is that I had a little fore-knowledge of the problem so I didn't have to panic and call for a tow.
His original diagnosis was that the connecting rod bearing was worn and once the oil was warm, it would thin and escape causing a drastic drop in oil pressure. By revving the engine high enough, he could increase oil pressure enough to keep it running for a short while. He had the cam shaft measured and all was within spec so he replaced the con-rod bearing as well as piston rings and some other stuff... I'm not mechanically knowledgeable so I'll have to go look at the receipts again to see what all was replaced.
Clearly that diagnosis, or some portion of the rebuild, was incorrect.
The previous owner and I will need to have a little chat before I can get the engine to a mechanic as I believe our Sales Act may have an implied warranty and I don't want to break that by taking any action until speaking with the PO.
I checked the oil, it was clean & clear and once back in the pan it was showing correctly on the dipstick. I don't see any smoke in the exhaust. I'm not mechanically knowledgeable to have an opinion of the cause and will leave that determination to the mechanics who will eventually need to look at it.
Hopefully the PO and I will reach a gentleman's agreement to get this engine running in good condition.
Joe... (High five)!
|05-30-2011 12:24 PM|
|WanderingStar||Good story. Sounds like something maybe clogging your oil pickup.|
|05-30-2011 09:43 AM|
|05-30-2011 09:15 AM|
|RobGallagher||Funny how things tend to work out in the end. Staying calm and thinking things through certainly helps.|
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