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HPDI gurus, what is this symbol?

Old 03-25-2019, 05:33 AM
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Default HPDI gurus, what is this symbol?

Last couple of trips my port engine ('02 200HPDI) has been throwing up this symbol on the tach, its not flashing just solid. Engine is otherwise behaving perfectly, getting full rpm etc.. I have seen this same symbol once before months ago on the same engine, it was just there once, I checked for obvious things like water in fuel and it never came back. Now its there and its not budging, again I have dumped all the fuel from the water separators and VST and there's no sign of any water in the fuel. I thought it might have been a maintenance reminder but I reset the trip counter to zero and its still there. Really struggling to get a straight answer on what it means!?

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Old 03-25-2019, 05:54 AM
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It is the 'Engine Trouble Warning Indicator'. Not alot of detail about what it actually reports on.
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Old 03-25-2019, 05:56 AM
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I had HPDI's and never saw that symbol. It looks like a universal check engine. Betting there are codes thrown and you will need to hook up to software to read.
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Old 03-25-2019, 07:04 AM
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Need to hook up YDS and pull the code
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Old 03-25-2019, 07:24 AM
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HERE YOU GO FROM THE MANUAL
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Old 03-25-2019, 08:07 AM
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Even though it seems to be running fine, i would NOT just keep running it. That warning could be giving you a great warning something very bad is arouynd corner- leaned out, something out of spec, etc
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Old 03-25-2019, 08:19 AM
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Originally Posted by MOCEAN CONTROL View Post
HERE YOU GO FROM THE MANUAL
Manual? Real boaters don't need no stinkin' manual.
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Old 03-26-2019, 12:05 AM
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Haha, the reason I ask is because the first thing I did was check the manual and I was surprised at how vague it is.. I was hoping to speak to someone with experience as to exactly what kind of issues could be throwing up the warning. Have heard it could be something as simple as the throttle position switch which is very possible. But I wont be using it again thats for sure, not hard to get my mechanic over to hook up the YDS so thats what I'll do!
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Old 03-26-2019, 04:43 AM
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Originally Posted by simonoz View Post
Haha, the reason I ask is because the first thing I did was check the manual and I was surprised at how vague it is.. I was hoping to speak to someone with experience as to exactly what kind of issues could be throwing up the warning. Have heard it could be something as simple as the throttle position switch which is very possible. But I wont be using it again thats for sure, not hard to get my mechanic over to hook up the YDS so thats what I'll do!
The check engine light is exactly like the ones in a car. The only real way to know for sure is to hook it up to electronics and read the code and trouble shoot Take your pick. It could be anything from a bad filter to a air leak to bad sensor. Theres really no way to tell for sure, and it can and will vary from 1 occurence to the next.
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Old 03-29-2019, 10:52 PM
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So the latest is my mechanic came around and hooked up the YDS.. It showed no active faults, we ran them on the muffs and kicked them in and out of gear etc and everything is running as it should. He had no idea what it could be except potentially a faulty tach? Again the main reason I posted this thread is that down here in Oz these engines are quite rare and nobody has much experience with them.. Any ideas?

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Old 03-30-2019, 02:36 AM
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Holy balls, here we go again, another HPDI thread. You may want to do a HPDI thread search. Volumes written about mystery filters, o rings and 100 other potential issues. But I definitely would not continue to run the motor until you determine the issue as it may go boom.
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Old 03-30-2019, 03:31 AM
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I had twin 200’s

never had that service engine light come on
but they were pretty reliable with strong battery and clean fuel

maybe try swapping harnesses or gauge inputs.

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Old 03-30-2019, 03:51 AM
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Originally Posted by rocksandblues View Post
I had twin 200’s

never had that service engine light come on
but they were pretty reliable with strong battery and clean fuel

maybe try swapping harnesses or gauge inputs.

Good thinking.. I'm super anal about fuel and I use the boat heaps so its never stale, batteries are new and strong too.. If I rule out a dodgy tach I really don't know where to go from there
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Old 03-30-2019, 07:25 AM
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Never had that light come on while I had my HPDI. Good luck figuring it out. All your fuel filters new/clean?
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Old 03-30-2019, 07:40 AM
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Originally Posted by simonoz View Post
So the latest is my mechanic came around and hooked up the YDS.. It showed no active faults, we ran them on the muffs and kicked them in and out of gear etc and everything is running as it should. He had no idea what it could be except potentially a faulty tach? Again the main reason I posted this thread is that down here in Oz these engines are quite rare and nobody has much experience with them.. Any ideas?
Can you swap the Tach's to see if the indicator follows the tach?
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Old 03-30-2019, 09:08 AM
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^^^ I'd try this, too. The older round Yamaha tachs and speedos are not very interactive.
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