It’s the diaphragm type bolted to the motor beside the dipstick.
The engine operates it.
I would have just replaced the rubber if it weren’t for the impatient people around here.
A good bit cheaper
Got it from the fuel pump factory
Thanks @sman. Thats the low pressure pump. The high pressure pump is just behind the top of the three intake chambers. I made somewhat of some progress today on diagnosing my issue.
I am now able to recreate the issue in my driveway. I covered the motor with a thick drop cloth in the hot sun and got the engine temp to 116F while idling at 2500 RPMs. Once it got to 117F I immediately shut the engine down and let it sit for 10 minutes.
It would not start. Here are some things I noticed:
- The high pressure pump was not running when the ignition switch was turned to ON…it should.
- There was no pressure in the fuel line when I pressed the schrader valve.
- The was no voltage on the leads powering the high pressure pump.
- There was no long beep coming from the motor when the ignition was turn ON and the three LEDs on the tiller handle were not coming on.
This leads me to believe that I have a problem with computer modeule?..not sure what it is called.
I am posting this detail hoping someone can confirm or recommend more diagnostic testing.
read on down about the vst pump and filter. Its worth a try.
OR, be nice and ask here on the Tohatsu owners page.
with that current diagnosis my guess is the ecu. sorry, but ebay is your friend.
Thanks EF! I did more testing and found that the ECU is not getting power when motor is hot…I pulled the fuse on the circuit that powers the ECU and it behaves that same when it gets hot. I also hear a relay clicking…just need to find it and test it.