I recently purchased a used boat and it was flowing from the tell tail great. Trimmed it up the other day to go through some stumps, then it quit flowing. Brought it back to the house and removed the lower unit and found parts of an old impeller in the very bottom and floating around in the...
I have a 98 4.3L with an Alpha Gen II. I replaced exhaust manifold and riser last year and it ran great. Been out twice this year and it ran fine. It usually runs around 105 degrees, which I know is cool, but whenever it runs hotter, it diesels and won't shut down, so I left that alone. The...
I have gained so much knowledge from this site and it has saved me much headache, and money. I used the site to diagnose my boat problems and finally came to the conclusion that my batwing one-piece manifolds were rusted out, causing my engine to hydrolock. Several of the responses to my...
I have a '98 4.3L Mecruiser 262 with the batwing manifolds. I purchased my boat this past season and am trying to get it ready for Spring. I think I have the correct parts to convert to the 2 piece (elbow tube and upper & lower bellows), and now need to purchase the manifolds & elbow risers. I...
I opened and saved Manual #25 - a few times- from here but it only has Section 1-3, although the index says there is more. 4 and up are not there. Am I doing something wrong? Thanks.
I read the tech info on testing exhaust manifolds, but I have the one piece "batwing" manifolds. 1998 4.3L Mercruiser. Never been in salt water. I have gotten water in the cylinders twice. The first time was after it dieseled really bad (both sides had water), and the second time was after I had...
I have a 1998 4.3L Mercruiser. Recently bought my boat and it appears that the thermostat may be stuck open, or is absent. The temp gauge never gets over about 105 degrees. I did the electrical test on it and it checked good - grounded out and pegged out. I felt the water coming out of the back...
This is my first post to iboats. I've been reading for hours/days the wealth of knowledge found here and finally got my thoughts together to seek help. I've read everything I can pertaining to hydrolock on this site and hope I have my problem diagnosed, but I need you help.
4.3L (Gen+)...
