tohatsu 90 tldi problem, help!

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darko1307

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Apr 3, 2011
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Hello, I have problem whit my Tohatsu. My motor is TLDI 90 2004. MD90B.
It has only 14 hours, it was in shop as new many years and it is like new. Last summer worked ok and now when I want to start it it just cranking whitout start, like there is no fuel or stop switch off. I can not hear feed fuel pump when turn on key. Vapor separator is full of gas and case of feed fuel pump is full of gas when pumped whit prime pump on fuel line.
I try to remove outlet from feed fuel pump toward high pressure filter and turn on key and gas is not coming out of fuel pump.
I would think that it would blow fuel out when key turned on as it has to pressurised fuel in rail.

No fault codes at self diagnostic.
Is my feed fuel pump broken from sitting for 10 months. I hear that gas can melt and stick plastic parts inside pump when not working long period. Servise of Tohatsu is not close to my home.

Also today I took out feed fuel pump from case and put it directly to battery and pump in glass of gasoline. First it was not spininig I was hearing just click, click,click and then it starts spining but weak, and can not blow gasolin out from glass.

Thanks in adwance Darko!
 

pvanv

Admiral
Joined
Apr 20, 2008
Messages
6,559
Re: tohatsu 90 tldi problem, help!

Sounds like an ffp issue. Possibly due to old, bad gas sitting in the ffp. Diagnose the wiring to the pump first, as it's easily done. Take ohm readings on the pump. Those diags should lead you in the right direction.
 

GA_Boater

Honorary Moderator Emeritus
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May 24, 2011
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Off topic and an old thread. Just pick anything to hijack! Start a thread of your own.

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