New to seadoo boats

[halfsack82]

Anyone pull there boat out of storage and one of its engines spin over but not fire, 2007 speedster 200 430hp, good compression no spark, I’m new to these boats.

 

[JPass]

Anyone pull there boat out of storage and one of its engines spin over but not fire, 2007 speedster 200 430hp, good compression no spark, I’m new to these boats.

Have you tried swapping coils from one motor to the other? That way you can rule out the coils not providing spark.

 

[halfsack82]

I have not,do coils go out often on these boats?

 

[JPass]

They certainly can. It's highly unlikely all three are dead, but it costs nothing to check. If you swap and you still do not have spark, you'll need to check fuses and other components of the ignition system.

 

[halfsack82]

I’ve checked all the fuses behind console and next to engine they all appeared good

 

[JPass]

swap the coils and confirm. You may want to get the repair manual to help you trouble shoot the ignition system.

Have you confirmed power to the coils? You'll need to trace the wires back from the coils and see where the power stops.

 

[halfsack82]

It’s at the shop now, hopefully they will get it lined out. Where can I get a shop manual for it.

 

[rcookr1]

let us know what the problem was and what was the fix please

 

[halfsack82]

Will do, drove by the shop earlier, it’s pulled in with engine bay open, hopefully I’ll hear something today

 

[rcookr1]

my guess fuel pump

 

[halfsack82]

I swapped fuel lines from the other engine that’s running, no change

 

[JPass]

Definitely an ignition problem. Curious as to what it is.

 

[rcookr1]

when you swapped fuel lines did the other engine still start

 

[halfsack82]

when you swapped fuel lines did the other engine still start

Yes it did

 

[Sportster-2001-951C-Stock]

Maybe some critter has made a nest of your wiring harness?

 

[halfsack82]

Kinda what I’m thinking and fearing

 

[halfsack82]

Called the shop. Mechanic seems to think it’s ecu

 

[Sportster-2001-951C-Stock]

Not on 4-tec but I've seen another EFI system where the ecu failed to power on the fuel pump, resulting in no-start. Cranking was fine, don't recall if ignition was okay.

I believe a battery charger was involved b/c they'd had battery issues before hand but I couldn't confirm it.

 

[halfsack82]

It’s got a brand new battery, not telling

 

[Sportster-2001-951C-Stock]

It’s got a brand new battery, not telling

Right, well I've seen enough phantom ECU failures to advise being veewwii careful (Elmer Fudd voice) charging the battery and jump starting any modern vehicle. Have a read here as this is well understood by too few, IMO:

"Understanding voltage drop
Let’s start with the concept of voltage drop on a perfectly good car with a fully charged battery. If you connect a scope lead to the positive battery terminal and ground and crank the engine, the scope trace shows that battery voltage drops to around 3-volts for about 15-ms before climbing back to 6-volts and then ramps up to 12-volts. See the chart below."

https://m.littelfuse.com/~/media/el...n_automotive_environment_application_note.pdf

Can a jump start damage a car? — Ricks Free Auto Repair Advice

 

[halfsack82]

I’m not ruling it out but one engine will start and run while the other just turns over. Leads me to believe it’s not voltage related

 

[Sportster-2001-951C-Stock]

Not ruling out ECU failure? We don't know much at this point, there could be a chewed up harness or any number of other things, such as a disconnected sensor overlooked during winterization.

 

[rcookr1]

Drown mode?

 

[halfsack82]

Idk, what the mechanic is coming up with, I’m figuring a chewed up wire as well, hopefully know more next week.

 

[JPass]

Drown mode?

If he's also missing fuel, maybe?

I would think a quick connection to BUDS and this could be sorted fairly quickly??