Tohotsu 50hp TLDI questions.

[F15h]

I have a 50hp TLDI that has been giving me some problems. First it started running at 3200 rpms at full throttle. Then when you killed it, it wouldn't start for a while. I have cleaned the oil out and the water separators for oil and fuel. I also have went through the start up procedure of bleeding the oil line and cycling the key to get fuel pump primed up. Now it seems that it has quit firing. Hopefully someone here can help.

I also would like to know what the two air valves on the back of the engine is for?

 

[TOHATSU GURU]

Re: Tohotsu 50hp TLDI questions.

You have to use the service manual to put the engine into it's onboard computer self diagnostic mode to determine what is wrong....Usually it's people using a battery that is too small that causes problems.

 

[pvanv]

Re: Tohotsu 50hp TLDI questions.

And the schraeder valves are for checking air and fuel pressures. The TLDI is not a "backyard shade-tree mechanic" design. You can use the service manual, read the diagnostics, and then proceed from there.