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DanE
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Everything posted by DanE
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Check the vacuum hose to MAP sensor. If it was solely a ignition failure (no spark intermittently) you should have some muffler explosions going on.
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MAP sensor is crucial, not that common but the years on this engine makes anything possible.
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That's some important information you got out of that test. Worst thing is it seems to come and go and as long as it's running ok it will be impossible to find anything wrong. If you haven't already I would change both relays just to be sure ( you're going to have to sooner or later anyway). If the problem persist you have some electrical troubleshooting ahead.
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@Wish Are you able to check fuel pressure while under way? You need to get a reading when the sputter occurs, if bad pressure is the cause you will never discover it when the engine is running ok. Fyi there are possible electrical malfunctions that can cause fuel pressure drops intermittently . For instance a bad fuel pump relay.
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And to properly check function of fuel pressure valve you should connect a vacuum pump to the vacuum pipe on the valve, lower rhe pressure with the pump and watch the fuel pressure drop by the same amount. But really what you need to check regarding that vacuum port is to pull the vacuum hose and make sure no fuel is leaking through the diaphragm. It does happen and will make the engine bog down intermittently when the small squirts of fuel finds its way to the intake manifold.
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@Orlando76 Is correct, and I might add a fuel pressure reading while the symtomes occur is critical when determining which way to proceed with troubleshooting.
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@Wish What did I tell you about running around in circles unless you check fuel pressure. Always start there. Low compression? Not likely if it runs good every now and then. A quick check for ya, sometimes the diaphragm in the fuel pressure valve starts leaking slightly, pull the vacuum hose off with engine running, if there is even the slightest drop of fuel coming out of the pipe where the hose sat you need to change fuel pressure valve. (that's where you attach the vacuum pump when testing fuel pressure anyway)
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@Wish https://www.skidim.com/prodinfo.asp?number=RF121085
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@Wish There is an updated spare part for that (harness). Even if you do get it sealed with a compound the harness itself is getting old, plastic deterioates with age.
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And how is the search after the perfect wake since the introduction of the SN bubble butt going?
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@Wish Think the manual says yearly.
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@Wish Depending on how far off it is it can give you everything from an occasional sputter to a no start situation. Point is, it is not monitored by the ECM and will not light up the fault lamp or generate fault codes. If you have access to a fuel pressure gauge you can rule out the entire fuel system minus the injectors with one quick measurement.
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Start out by verifying you have the correct fuel pressure. Without that knowledge you could easily be caught running around in circles troubleshooting.
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https://m.facebook.com/story.php?story_fbid=10153149711017204&id=508502203
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@lpskier Yea I was late for the party. Stopped by in late June, Kris mentioned something about snowbirds leaving for NY during the summer. Can't say I blame you, the heat was unbearable.
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Hey @lpskier glad to hear he is up and about (if it is KLP, last time I met him he still was injured). Me and Elias will be in Orlando around easter, hope we can come ski with you at LSP.
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@escmanaze Sure the new "trick mode" seems to rev higher than previous modes but for us that is not " in the know" that really doesn't tell the whole story. Hypothetically you could achieve this behaviour by softening or delaying the initial response thereby creating the need for a higher response, or you could just have a firmer response with more down time on the throttle making you more free of the boat. Only the in crowd really knows what's going on.
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@BraceMaker So true on your last sentence, as in hook a ski rope to a Carribean cruise ship and your pulls will go unnoticed. However a fixed rpm is not the same as constant power output, to achieve a constant rpm the power output has to vary as the load does.
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What exactly do you mean by a flat line pull? If that means that the boat will put out the same amount of power throughout the pass with no gassing that will be the exact opposite of constant speed. Constant speed on the other hand will require more gassing than what we have now and some way to make the soeed control to anticipate change in load for a quicker response. I suspect constant speed control would feel like crap.
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@Tom351 According to @DynaSkiPete the "full noise" mode should result in 50 mph+ ripping your arms off ?
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There is a reason PCM puts the recommendation in their winterization manual.
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@BraceMaker I have rebuilt car engines with corrosive damage from sitting unused for extensive periods of time.
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Yes you should, turn the engine a few revs with a socket while the plugs are still out. That way you will spread the oil film on the cylinder wall. Will also keep piston rings from getting stuck in the grooves from corroision and carbon buildup.
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@Wish The $$ saved is in the R&D already paid for.
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Weird configuration as a club/price point boat the whole concept of ob is totally pointless. And for those actually looking for an ob now it has less storage?
