CStradling24
Cadet
- Joined
- Jun 7, 2012
- Messages
- 19
Just bought a 2001 Regal 1900 LSR. It came with a 4.3 Mercruiser. The boat and engine only have 66 hours on them. Thats good, and bad. The boat has sat for a while before I bought it. Seller claimed it was always flushed etc. When I bought it I had to replace the 2 BBL carb because it would not idle, was going to rebuild but got a new one for only $75 from a local guy. Once replaced I took the boat out and tested it. Ran fine for nearly 2 hours, then at idle the oil pressure dropped all the way down. With a little throttle it would pop right back up to 40 PSI. If I let it idle it would drop all the way down again. After about 10 seconds the engine shut off, no unusual noises and the temps were all normal. I googled a little and when I tried to restart the boat the starter made a loud screeching whine and the engine wouldn't turn. We got towed back to the dock needless to say, thanks marine patrol.
-I think the oil might have been to old and the filter clogged or something which was preventing flow at idle, yet when I gave it some power the oil was being pulled through possibly the filters bypass? I ma not thinking the oil pump because with just a little throttle the pressure came back up.
The next day I went and took out all of the plugs and tried to start it, starter made the same noise. I gave the engine a few turns using a wrench and all seemed okay. Cranked it and the starter worked fine for as long as I held the ignition. The moment I stop and try to crank it using the key again the screeching noise happens, UNLESS I turn the engine a little with the wrench. Its not very difficult to turn with the wrench, maybe 10-20LBS. It is as if the starter doesn't disengage after you stop the ignition.
-I am assuming when the engine hydro-locked and I tried to start it a few times I trashed the starter. Either way I am planning on replacing it to eliminate the problem.
When I am cranking it I dont have a lot of water that appears to be coming out of the spark plug holes but later I found out I definitely had water in the engine which leads me to the next part. I have the one piece V6 manifolds. I decided to take them off as well. Nearly all of the exhaust ports in the manifolds had some trace of rust in them. One of the middle exhaust ports had a hole in it all together. That parts easy, I will just upgrade to the 2 piece exhaust riser/manifold kit.
-Now for my BIGGEST concern. It doesn't appear as if the water was sitting in there for long but 4 out of the exhaust ports on the head side have traces of rust in them. two of them appear to just be little rust specs but the other two have a little more rust, not quite flakes though. I am going to try to attach many pictures but we will see how that works. With some rust in the engine is it even work getting the parts needed or would I be better off getting another engine. In my head rust in the engine at all seems like it would be means to call it quits? Or am I slightly over reacting. Also when looking at the oil on the dipstick it appears to be normal with no milky colors, so I am assuming the head gasket is good and the water was just from the manifolds.
I also am going to attach pictures of the Y exit tube ends where the flappers should be, there is nothing that even remotely resembles a flapper. If it is worth keeping this low hour engine I definitely have my work cut out for me. I am fairly new to engine work but I am a very quick and capable learner fortunately.
Thank you for any help possible here. I am active duty Air Force so trying to make money go as far as I can, like doing it myself to save on labor. If the rust isnt to bad then I plan to replace riser/manifolds, starter, oil, oil filter, fuel filter, impeller, outdrive oil and anything else that I can think of that requires maintenance which has been neglected.
-I think the oil might have been to old and the filter clogged or something which was preventing flow at idle, yet when I gave it some power the oil was being pulled through possibly the filters bypass? I ma not thinking the oil pump because with just a little throttle the pressure came back up.
The next day I went and took out all of the plugs and tried to start it, starter made the same noise. I gave the engine a few turns using a wrench and all seemed okay. Cranked it and the starter worked fine for as long as I held the ignition. The moment I stop and try to crank it using the key again the screeching noise happens, UNLESS I turn the engine a little with the wrench. Its not very difficult to turn with the wrench, maybe 10-20LBS. It is as if the starter doesn't disengage after you stop the ignition.
-I am assuming when the engine hydro-locked and I tried to start it a few times I trashed the starter. Either way I am planning on replacing it to eliminate the problem.
When I am cranking it I dont have a lot of water that appears to be coming out of the spark plug holes but later I found out I definitely had water in the engine which leads me to the next part. I have the one piece V6 manifolds. I decided to take them off as well. Nearly all of the exhaust ports in the manifolds had some trace of rust in them. One of the middle exhaust ports had a hole in it all together. That parts easy, I will just upgrade to the 2 piece exhaust riser/manifold kit.
-Now for my BIGGEST concern. It doesn't appear as if the water was sitting in there for long but 4 out of the exhaust ports on the head side have traces of rust in them. two of them appear to just be little rust specs but the other two have a little more rust, not quite flakes though. I am going to try to attach many pictures but we will see how that works. With some rust in the engine is it even work getting the parts needed or would I be better off getting another engine. In my head rust in the engine at all seems like it would be means to call it quits? Or am I slightly over reacting. Also when looking at the oil on the dipstick it appears to be normal with no milky colors, so I am assuming the head gasket is good and the water was just from the manifolds.
I also am going to attach pictures of the Y exit tube ends where the flappers should be, there is nothing that even remotely resembles a flapper. If it is worth keeping this low hour engine I definitely have my work cut out for me. I am fairly new to engine work but I am a very quick and capable learner fortunately.
Thank you for any help possible here. I am active duty Air Force so trying to make money go as far as I can, like doing it myself to save on labor. If the rust isnt to bad then I plan to replace riser/manifolds, starter, oil, oil filter, fuel filter, impeller, outdrive oil and anything else that I can think of that requires maintenance which has been neglected.
.... There's your problem right there...