2002 F115 dies sometimes after starting

[JONSNELL]

2002 F115 890 hours.

The same motor I'm having oil pressure warning issues with.

This has only started recently and only happens later in the day. On a "normal" day I do about 50miles and run to say 6-8 different locations with different run times in between )

I start the outboard ( sometimes a little hard to start, low idle and knocks , sort of sounds like a tractor and then comes good, does stall sometimes when you put it into gear ) and get going and not long after say 15-20 seconds the motor loses power, I pull the throttle back , it may stall and then power up again and all is good. This may happen 2-3 times in a day but not everyday.

No codes on the diagnostic.

[99yam40]

If you think it is running out of fuel, you might try pumping primer bulb before cranking up to make sure every thing is full.

Air in lift pump may cause a ticking noise but not a knock

[JONSNELL]

This problem had not shown itself for a couple of trips but in an attempt to deal with it, I had the fuel system serviced - Cleaned VST filter, fuel rail and lines, sent injectors to be cleaned. Tech said the VST filter was half covered with a "gum".

Yesterday I had the problem resurface but earlier in the day - in the past it was always later in the day - FWIW yesterday was a little warmer.

[madharchod]

i would be checking or replacing the TPS on these as sometimes they tend to malfunction and dosent show on the diagnostic ,these are only cheap but you will need a special hex key to replace them make sure you put in the right way or else they wont function at all
cheers

[JONSNELL]

Thanks for that - will look into it.

AM I looking at the right part ? it says about US$124 - so that would be over A$200- for me over here.


After the different oil pressure warning I had on the weekend ( see my other thread ) I'm now starting to wonder if these two issues are related.