2005 tohatsu 70 hp running issues

1

123dggregory

Recruit
Joined
Jun 29, 2011
Messages
1
Hi,

My Tohatsu 70 hp is having running issues. It seems to be only running on 2 cylinders sometimes or have a complete lack of power. It will then pick up and then go back to poor running (quite quickly like your are tapping the throttle)

It does occasional work properly for longer periods, then poorly again.

Im thinking it maybe plugs, HT leads (if it has them) or a dirty Carb

Can anyone suggest what is more likely? Im thinking a dirty carb would be more likely to run badly all the time so its probably electrical??

Thanks
 
TOHATSU GURU

TOHATSU GURU

Admiral
Joined
Jul 22, 2004
Messages
6,164
Re: 2005 tohatsu 70 hp running issues

Could be either, but...The way to determine the problem is by getting out the service manual and eliminating possible problems. Or you can just clean the carbs, correctly, and you have a 90% chance of curing it.
 
pvanv

pvanv

Admiral
Joined
Apr 20, 2008
Messages
6,509
Re: 2005 tohatsu 70 hp running issues

What is your model? Is this a TLDI? If so, there aren't any carbs... and the onboard diagnostics should tell you what faults are being detected.
 
F

fishskiff

Cadet
Joined
May 15, 2011
Messages
13
Re: 2005 tohatsu 70 hp running issues

123dg, my honda bf15 had similar symptoms when the ignition module failed. I ran the engine at home on the hose and while it was idling i tapped everything with a screwdriver handle. when i tapped on the cdi/ignition module the engine died and would not start. This is after new carb plugs etc. that didn't fix it. hope this helps.
 
pvanv

pvanv

Admiral
Joined
Apr 20, 2008
Messages
6,509
Re: 2005 tohatsu 70 hp running issues

fishskiff said:
123dg, my honda bf15 had similar symptoms when the ignition module failed. I ran the engine at home on the hose and while it was idling i tapped everything with a screwdriver handle. when i tapped on the cdi/ignition module the engine died and would not start. This is after new carb plugs etc. that didn't fix it. hope this helps.
Click to expand...

Nice to know... but you have a completely different motor, from a completely different manufacturer, so odds of the OP's problem being addressed by your information is remote at best.
 
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