now what no power

[kirmy22]

Hey guys I posted a couple of weeks ago, had lots of water in my fuel and carbs, so instead of doing it myself I took it to a mec. He rebuilt the carbs checked compression all electronics are new. Took it to the lake today starts and idles but if you try to give it throttle it bogs down and barely runs , and if you open it up all the way it will die, any ideas. It is a 1983 mercury 150 black max. Put new plugs in after the water issue but not since the carb rebuild. Just hope he did what he charged me for, 300 dollars for the carb work said he changed 2 needle and seats and a couple of gaskets. Thanks for the help in advance.

 

[Maxz695]

Re: now what no power

when was the last time you change the gas filter and rebuilt the fuel pump also the check valve in the bulb may be bad allowing gas to go back to the tank rather than pum to the carb any cracked hoses will leak air and you will lose suction from the pump check on these issues they should help

 

[Mi duckdown]

Re: now what no power

How far r from the water and your mech? I would put him in the boat for a test drive.
He has to to stand up /for his work.

 

[Maxz695]

Re: now what no power

For 300.00 I woulda done the carbs with the needle seats the waterpump changed the filter plugs and washed your boat lol

 

[kirmy22]

Re: now what no power

Im 110 miles from mech, and it,s 60 miles from him to the lake but I think he has a pit at his shop, where he is suppose to run it.

 

[CharlieB]

Re: now what no power

Did he clean the fuel tank, and install a water seperating fuel filter? If not, you may have water in the carbs, again.

Just for drill, test spark to be sure you do not have an ignition problem.

After you install a water seperting filter, Pull the float bowl drain (one at a time) try to catch the fuel in a small container to look for any 'beads' of water. Pump the primer to flush any remaining beads out. Reinstall the drain plug and move on to the next carb.

 

[Mi duckdown]

Re: now what no power

How far r from the water and your mech? I would put him in the boat for a test drive.
He has to to stand up /for his work.
DONE.

 

[kirmy22]

Re: now what no power

Just talked to mech, dont think he is going to take responseabilty for carb job, he says bring it back and he will check something under the flywheel that controls hi and low speed. Does this make sence to anyone HELP

 

[Maxz695]

Re: now what no power

I,m am not firmiliar with the elctronics of your engine but I have heard of something to do with hi and low output on some stators. Hope someone can help you out on here soon

 

[CharlieB]

Re: now what no power

That is why I asked you to confirm that you have a good hot blue 7/16 inch spark on all cyls.

If the shop did not cure the source of the water, it's still there.

An unscrupulous shop will drain and flush the water from the carbs but claim you had a 'spark' issue and sell you on parts you may NOT need.

And when you come back AGAIN, they will claim it is another expensive ignition part.

Learn to test spark, repost your findings. Save a LOT of money.

 

[Engine344]

Re: now what no power

Not for nothing but I had a Johnson that had a Choke issue....and replicated this problem to the T......would idle like a champ, put power to it and it fell on its face?

 

[Chris1956]

Re: now what no power

The carb idle mixtures could be set too lean. That causes stumble. However, any decent mechanic would already know that.

Try a little test. When you advance the throttle and the motor starts to die, hit the choke button for an instant. If the motor picks up, the carbs are too lean.

BTW - the high speed stator winding doesn't get used until 2200 RPM or so. If you don't get that high, I think the stator is likely not the issue.

 

[kirmy22]

Re: now what no power

Thanks for the response guys. This motor had all new electronics on it when I bought it, power packs ect. The mech said he tested spark compression, trigger, when he did carb work and everything was good. I just replaced the plugs since the old ones had been run with water in gas, it runs good on the muffs, killed it and rechecked the plugs every one was wet Im afraid when I put it in the water it will do like yesterday and bog down when it loads up,hate to take it back to that mech, but also hate to throw away 300 dollars.

 

[Engine344]

Re: now what no power

Well as stated above your "mechanic" should stand by his work......have you checked your fuel bulb, fuel line, filter? Could also be a starving issue? Although very rare I have seen fuel line collapes or a bad bend when things shift, allowing enough fuel to idle but not when you throw the whip at it? Just my 2 cents?

 

[kirmy22]

Re: now what no power Update

Re: now what no power Update

Update. took the boat back to the mechanic. he checked all the electronics, did nothing to the carbs or fuel, said every thing was fine looked at my prop and decided I was over proped, had a 23 pitch stainless he said my motor couldnt pull it,so I drive across town spend another 150.00 on a 19 pitch prop he puts it on and tells me all my problems are solved. Went to the lake today, same problem give it throttle and it is like it is starving for gas, played with the trim while messing with the throttle and after awhile I could feel it picking up speed, all of a sudden we were scootin, could slow down and speed up everything was fine,untill you kill it then same routine all over again, did that a couple of times then started it and headed in all it would do is bog down, if you gave it to much throttle it would die. I am out of ideas if anyone has any suggestions Im all ears. Could it be the fuel pump, just guessing but that was never changed aftef the water in fuel thing. And also when he redid the carbs he didnt pull the bottom jets a couple of them were epoxied on the outside and he said he didnt want to mess with them. Thanks in advance all help is welcome.