Indmar Recall: Catalytic Converter and Exhaust Y Manifold

[BrewKaiser]

My local service shop informed me that Indmar has a recall on my 2017 Raptor 440 (and likely all Raptors of that general age) concerning the exhaust Y manifold off the engine and catalytic converters disintegrating after getting wet. Anyone have any more info on this? Also wondering if this why I keep getting the high limit alarm. They already replaced the O2 sensors. I am wondering what the "fix" is. If it's going to add another baffle or constrict exhaust in some way.

I'm thinking of putting this off until we winterize as we are only a few more outings away from putting Big Red away for the winter.

Any advice I need to pass along to the shop when they do the recall campaign?

[freeheel4life]

As far as I know they just released service bulletins regarding the issue(finally). Not a recall, but thats just what I got in my email. Its been an issue, but wouldnt call it common. Out of the 40 or so Raptors that went into service last year have had 3 or 4 with the issue. Theres a handful of different issues that cause water to get pulled back down the exhaust that all need to be checked (mostly alignment and gasket issues). I think valve overlap during exhaust scavenging may be a hair long and causing water reversion, but that is strictly my opinion and Indmar says no.

Indmar has been good about sending new parts out for affected serials. Will have to look at the dealer portal tonight and see if they issued a recall. The fix is new cats that have a ring inside to help hold the cat brick in place (17s didnt have it) and for 19 and up there is a bigger Y pipe, but Indmar hasnt been sending it with the new cat kits. Thats been my experience so far.

[BrewKaiser]

As far as I know they just released service bulletins regarding the issue(finally). Not a recall, but thats just what I got in my email. Its been an issue, but wouldnt call it common. Out of the 40 or so Raptors that went into service last year have had 3 or 4 with the issue. Theres a handful of different issues that cause water to get pulled back down the exhaust that all need to be checked (mostly alignment and gasket issues). I think valve overlap during exhaust scavenging may be a hair long and causing water reversion, but that is strictly my opinion and Indmar says no.

Indmar has been good about sending new parts out for affected serials. Will have to look at the dealer portal tonight and see if they issued a recall. The fix is new cats that have a ring inside to help hold the cat brick in place (17s didnt have it) and for 19 and up there is a bigger Y pipe, but Indmar hasnt been sending it with the new cat kits. Thats been my experience so far.

Thanks for the info. I was informed that mine would need it. I also installed the OEM FAE at the beginning of the season and requested they remove the baffle. Not sure if that makes my boat more susceptible as well.

The High Limit alarm is annoying. I've been told that I can continue using and they will replace O2 sensors again. I did see someone else was having repeated issues. Maybe it was you @Up2plane. I do feel like since the high limit codes have started fuel consumption and engine performance have been poorer.

[freeheel4life]

I will bet you are getting water on the 02s. Shouldnt really be causing any kind of run issues though from the boats Ive seen. Your code is the STBD post cat O2 sensor. Run boat on fake a lake or take a 7/8" wrench with you to the lake. Pull the sensor out after running for a bit and look for water on it. Water will hang out at the base near the threads and you may see some on the tip. While its out shine a light downhill into the pipe. If you dont see the cat brick (looks like very tiny honeycomb/grid pattern) then it got pushed out and falls into the service bulletin/warranty group. Indmar sends out the parts and then its a fairly basic repair.

[tigemech]

Thanks!

Will do. I noticed the black exhaust flapper looks like it never closes completely. I think the rubber is just getting worn a bit. I have noticed a gurgling sound coming from the exhaust occasionally.

Water does run though the exhaust. The rubber flap is just there to help prevent water getting pushed back into the exhaust and into the engine. The water runs along the outside of the converter, the misalignment issues cause water to get sucked backwards through the cat, causing it to break, cold water + 1400 degree cat causes it to shatter.

[MikeB313]

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[freeheel4life]

Nope. That should be either a throttle handle or throttle body issue, or worst case a harness issue. Cant remember for sure, but I believe theres 2 TPS and TCPs IIRC.
I think if it sees less than 1V you would get that (they operate between 1v and 5v). You wont be able to see much without Diacom, unless a guy had a wiring diagram and wanted to backpin the connectors.

[tigemech]

I’m pretty sure it’s the engine harness, as when you wiggle it the problem changes. Thanks for the info.

Thats what would be causing your running issues. The converter and o2 sensors wont really effect performance.

[Germaine Marine]

The new Y pipe fixes the problem entirely...

[freeheel4life]

The new Y pipe fixes the problem entirely...

That's what I saw with the Y pipe I put in a Craz that was dogging me. Only thing was Indmar wouldnt send it until I installed all the new parts and could then confirm AGAIN that there was still water in the exhaust after new cats, gaskets, etc were installed. This was months ago though so hopefully they are being a little less stingy on the new pipes. If I had to guess they cant just send them out to everyone affected due to line production....just a guess though.

[Germaine Marine]

That's what I saw with the Y pipe I put in a Craz that was dogging me. Only thing was Indmar wouldnt send it until I installed all the new parts and could then confirm AGAIN that there was still water in the exhaust after new cats, gaskets, etc were installed. This was months ago though so hopefully they are being a little less stingy on the new pipes. If I had to guess they cant just send them out to everyone affected due to line production....just a guess though.

Yeah sounds about right.

Our tech in utah had a hand in the design fix for that pipe, I think we get them because of that [emoji23]


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[freeheel4life]

I think a stainless elbow is in order as well. The trouble boats I've seen start to develop a kink at the 90* elbow. 4" rubber tube bends when you start trying to align the y pipe gaskets on some boats.

[BrewKaiser]

Thanks Y’All. I’ll be insisting they also replace with new Y pipe. I spent enough time at the shop this year. I’m due for a trouble free year in 2019.

[tigemech]

I think Indmar needs to put a reversion cone on the end of the catalyst exhaust pipe

[IDBoating]

Could a bad ecm goof up other components on the Canbus?

Theoretically yes, but it would most likely have to be a hardware level failure such as the CANH and/or CANL wires shorting to something, or each other. Most modern CAN driver chips include diagnostics to self-decouple from the network if they, or their controller, does something contrary to the CAN protocol for too long. This actually proved to be a disadvantage in a CAN design we did a while back, where we wanted to use a single set of outputs for both CAN signals (in networked applications) and non-CAN signals (in non-network environments). The CAN driver chips simply wouldn't let us violate the protocol, they were always working to protect the network. WE knew we weren't on a network, but they didn't.

The bottom line is that a typical CAN device isn't likely to "take down the network". But a physical problem, such as a short in the harness or on the ECM's connector(s), definitely could.