2016 F70 Issues

[panasonic]

I would ask for the old pump back. Hopefully the new pump will solve your problem. It just seems a bit odd to me that it would fail in such a manner as you described..usually fuel pumps quit and that's that..they dont come back to life after sitting for awhile. Just saying. Hopefully I am wrong.

[Gatorlizard]

The pump has been ordered. I should have the boat back by the middle of next week.

[99yam40]

keep us informed if that was the fix, thanks.
Did they just replace the pump?
or some other things also

[Gatorlizard]

Got a call today.. He said the high pressure fuel pump was the problem. I should have it back by the middle of next week. I'll confirm the fix then.

[Gatorlizard]

It's been 8 weeks wed and I am getting tired of waiting. Probably going to bring it home this week and start swapping parts starting with the ECM. What the hell... It's only money!

[Gatorlizard]

Not yet. They told me 3-5 weeks. It's been 3 tomorrow. Some of the guys nearer to me that I don't trust told me 6-8 weeks. It is what it is.

[Skin diver]

Any updates to what was wrong?

[Gatorlizard]

Electrical/Computer talk is way above my pay grade. I took it to the most respected shop in my area this week. I'll let you guys know what the outcome is.

[zenoahphobic]

Running that long before shutdown, and then needing an hour of cooldown before running properly again screams ignition to me. Sounds like a coil breaking down. Coils seem to be way better than they were 20 years ago but if that isn't the textbook definition of an ignition break down then I don't know what is.

Interesting you say that. Hope we get a final answer.

[99yam40]

as I said you need to see if the 12V + goes away or if the ecu drops the neg.
also what that ECU looks at to tell it the motor is running so it will keep the neg for the pump

[Gatorlizard]

does pumping the primer bulb help any?
Might be the VST runs low on fuel where the electric pump has no fuel to pump?

if the VST is full all the time, then I would make sure there is 12 v + to the pump when the problem happens.
I guess the ECU grounds the neg to make the pump to run when the ECU thinks the motor is running, so need to find out what is supposed to make it realize the motor is running to make sure that signal is there

Pumping the bulb doesn't help at all. When I start the motor after it cools off it starts instantaneously without pumping the bulb. Something is failing after getting hot but I don't know what.

[99yam40]

does pumping the primer bulb help any?
Might be the VST runs low on fuel where the electric pump has no fuel to pump?

if the VST is full all the time, then I would make sure there is 12 v + to the pump when the problem happens.
I guess the ECU grounds the neg to make the pump to run when the ECU thinks the motor is running, so need to find out what is supposed to make it realize the motor is running to make sure that signal is there

[Gatorlizard]

was RPM is it shutting down at ? low speed or high speed ? approx RPM when it shuts down may help diagnosis

Both times it happened in the river it was at 18-2200 RPM. Same when running it in my driveway. It doesn't spit or sputter when it dies. It's like you switched it off. There is spark after it stops but the fuel pump doesn't make the normal buzzing sound. Just a single faint click when you cycle the ignition switch. After it cools down the furl pump buzzes and it fires up with just a bump of the key as if nothing ever happened.

[Tony Harper]

was RPM is it shutting down at ? low speed or high speed ? approx RPM when it shuts down may help diagnosis

[Gatorlizard]

Running that long before shutdown, and then needing an hour of cooldown before running properly again screams ignition to me. Sounds like a coil breaking down. Coils seem to be way better than they were 20 years ago but if that isn't the textbook definition of an ignition break down then I don't know what is.

That engine has two coils on it. What are the chances of them failing simultaneously? I guess anything is possible.