where to start

[Joe Dirte]

Hi guys new to the forum and could use a little help, I just bought a Bayliner Trophy off ebay, really because I like the lines on the boat and I miss my ocean boat, I paid next to nothing 790 for boat and trailer and owner stated motor ran, overstatment...lol, boat wouldn't fire, so I checked compression and have 120 across the board, took off bowl and checked floats and there where chunks of what looked like rock salt in the bowl. I cleaned up the bowls, floats,and jets best I could. Checked the fuel pump its pumping, pulled fuel line off tank and ran it off a gas can and sure enough it fires but will not stay running, so my question is where to start, im guessing pull the carbs and rebuild, check the reeds and replace lines,I have moderate mechanical abilities is the carb rebuild something a dyi er can do?

 

[MickLovin]

Re: where to start

Yes you can rebuild the carbs easy enough, but first eliminate other problems you may have. If you have a fuel problem, start with the tank first and check you had your breather open. I rebuild my carbs only to find the problem was further up the line, so now I always start with the tank when I buy an old motor or boat. I clean out the tank first, then I go from the tank to the motor, starting with tank and fuel lines.
Put a filter in between your pump and carbies. You say it didn't fire up until you cleaned the carbies up, but now it won't stay running.
You need to mention what type of engine it is, model or year. Check out Fran's carbie sync sticky at the front of the forum and also he has a video, you may not have adjusted you air mixture screws correctly.

 

[Joe Dirte]

Re: where to start

woops its a force 150, and I figured the fuel lines would need replacing, right now I have it run to a fuel can just past the priimer bulb, fuel pump most likely needs rebuit but it is pumping clean fuel

 

[Frank Acampora]

Re: where to start

Fuel PUMPS! There are two plumbed in series. Failure of either stage in either one will cause reduced performance. Remove the pump covers and automatically replace both diaphragms and gaskets. While you are at it, drop the lower unit and change the water pump impeller. Change the lower unit oil. If the old appears milky or if free water drains first, check all seals in the lower unit and replace as necessary.

The "chunks" in the carb bowls are a sediment which dried. It is due to mixing old gasoline containing MMT additive with ethanol gasoline. It is highly likely that the inlets are partially clogged, the high speed jets are partially clogged and the low speed circuits are also partially clogged. Remove all three carbs, disassemble them and clean them well. Reassemble them and set them up as described in the videos at the top of the forum.

A little extra time spent now will pay dividends later on the water. As another forum member states: "There is never enough time to do it right the first time but always time to do it again." Or something like that.

 

[oldboat1]

Re: where to start

deleted.

 

[Joe Dirte]

Re: where to start

Ty Frank that's is exactly where I will start, I misidentified the motor as a 150 its a 125 with 2 carbs, also which manual would you guys recommend? Also 1 porblem I ran into with this center console is they didnt allow for removal of the fuel cell. Anyone have any recommendations on how I am going to get it clean......thanks Joe

 

[Jiggz]

Re: where to start

There is really not an easy way to clean the in-place fuel tank. Some have tried sucking as much as they can with a siphon hose using a primer bulb, or using a 12V inline fuel pump. One trick to use is to raise the bow as high as possible so all liquids stay at the back of the tank. Be very careful when working with explosive fumes like those in the in place fuel tank, they can actually explode with the right combination of heat and fumes concentration. Make sure you work in a well ventilated space without any source of heat or sparks.

After following Frank's recommendation do the clear fuel filter mod, i.e. installing a clear fuel filter between the fuel pump outlet and the carb inlet. This will be great for troubleshooting and future diagnosis. As for manual, we mostly use general Force manuals from Clymers. When you dismount the carbs, check into the intake and with a flashlight check the condition of the reeds. Any missing petal or badly bent petal, needs to be corrected now.

 

[Joe Dirte]

Re: where to start

Thanks for the help and advice, drained the tank, rebuilt the fuel pump and carbs and she died right up on the first hit, thanks again

 

[redneck joe]

Re: where to start

i hope you meant fired right up?

 

[gregmsr]

Re: where to start

My hair died and fell off top my head......

 

[Joe Dirte]

Re: where to start

Lol yeah I meant fired, I pulled the motor yesterday and put it up for sale, and replaced it with a low hours freshwater 125 force that I found on cl, I figured that with 800 plus hours all in saltwater and the fact that channel islands are 22 miles out it was time to freshen up.

 

[redneck joe]

Re: where to start

good deal.



tight lines