Check your grounds connected to the engines around the bell housing. I had an issue last year similar. Randomly found a green ground wire with it separated from the ring connector. Bad/disconnected grounds can cause all kinds of issues.
Think of it this way if shaft or props are out of balance. With a car that has a tire of out balance, they usually show up at a certain speed, than goes away above or below that speed. Similar situation. Our season is so short, try to live with it till the fall and diagnose when out for season.
Plugs aren't the issue. Go ahead and change if you don't know how long they have been in there but you have a carburetor issue. Choke staying on or internals need to be cleaned out. Black smoke is too much gas-track that cause down.
The alternator does not "run the engine". The batteries supply voltage for the engine to run. The alternator keeps batteries charged.
I agree, check water in the batteries and than get them tested.
Quick simple question, Can you share your insurance company name? Seems like they were very responsive and accommodating. Don't mean to sidetrack this thread, but the information might help many. I am currently looking. Thanks and good luck.
Hello all. Hope everyone in the path of Elsa is ready and prepped. They say by the end of the week when the storm gets to the north east it will be a tropical storm with 30-40MPH winds. I will add extra lines to my mooring chain, but bigger question is whether to leave the complete camper canvas...
In my opinion, you are fine. And the actual gauges are known to be unreliable. My 350mags run right around that and have for years. I think it is important to watch for changes in running temp and than get concerned. Have you checked your heat exchangers for cleanliness?
"My boat won't run, tell me why..". You need to put a little more effort into this before coming to the internet and asking a question that has 500 possible answers! Spark, fuel, electric! Do some homework, than come back
Love the internet....Before you go bashing someone or a situation you might want to get the facts straight. I know the boat and owner. He is very qualified and has had that boat for many years. He had a transmission cable brake while it was in forward or reverse. Had no control and did an...
That isn't a threaded hole for keeping pulley on. It is for removing the pulley with a puller. Would be very rare if that pulley is walking off the shaft. I would check the bolts that attach the raw water pump to the engine block. Something will be very obvious. There are only 2 bolts that hold...
They key to this, is that the radio works while plugged into shore power but not disconnected. Not familiar with an 89, but 12 volts is 12 volts. You have a bad battery(s). I know you checked them, but the charger is supplying 12volts for the radio when plugged into shore power. Hence working...
Fly, nothing you can really do externally. "Leaking" means the internals of the injector are worn and the fuel that stays in the system is leaking into the cylinders. Hence doing the residual pressure test suggestion. If you aren't able to do the work, the hard part will be finding someone...
You have fuel injectors, not "Bowls" which are on carburetors. My theory is that you have leaking fuel injectors. Hence you needing to advance the throttle which gets more air into the engine and it starts. If fuel is leaking into the cylinders, that might be why you hear a different sound on...
I have one of those accordion style plungers. And as Jerry said, put water in bowl. I also try to tilt the plunger to the side to get water inside of it. As was said, this allows the water to part of the force of pushing clog downline. Also, I would leave vacuum hooked up to help it "pull" the...
Replace the ignition coil. Had 2 fail last year(twin engine). Same symptoms. I have never had a coil fail on any engine, than 2 in one year! They get hot and break down. Easy simple fix.