WOT only 1100rpm, no power |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: September-24-2012 at 9:00pm |
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nautiquelover1988
Groupie Joined: August-01-2012 Location: lake tahoe CA Status: Offline Points: 58 |
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BRAVO! problem solved! took off the dizzy cap two days ago, removed the rotor, and the metal plate to access the weights and springs, gave them a good spray with some pb blaster...took the boat out, INSTANT fix. as soon as i got out of the channel and opened her up it was just like when i first bought it, accelerated with no hesistation and took off moving just like it used to. Thank you everyone for all your help and support!
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SNobsessed
Grand Poobah Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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Agree, not fuel related, bad guess on my part. Total timing should be 28 degrees at 4000 RPM. At 1200 RPM, it should just be starting to climb above 10 degrees. If you remove the breaker plate (pretty easy) then you can inspect the weights directly, using feel for a snasg in the pivots.
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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Chris, I'm guessing ignition because I can't think of any fuel related issues that get better after 5 minutes, with fuel it's usually the opposite. That leave ignition, and again what can change with ignition after 5 minutes? Bad coils or other components tend to get worse with run time. One other thing I'm just thinking of now is plug wires, but I thought I read that Braedon replaced them, not sure.
One good thing about timing is you can fully see what's happening with it with a timing light hooked up and running the boat. It takes 2 people, and a timing light that will read total timing. If you have a mechanic friend I'm sure they will have one, and if timing advances ok then you won't have to chase the advance problems. Even if you pull the distributor apart first you'll need to time it after, so you might as well check it out first and save some time. Pete, do you know what total timing should be? At what rpm it should be all in? |
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'63 American Skier - '98 Sport Nautique
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Braedon,
Yes, the markings on the balancer turn with the engine. The timing light will flash showing the timing of the engine in reference to the pointer. Google engine timing and you should be able to find a video that will show how it's done. You need a timing light. The advance mechanism is under the point set base plate in the distributor. When you R&R it, you will need a feeler gauge to rough set the point gap and then a dwell meter to do the final adjustment of the gap/dwell. I would go heavier than WD40. I happen to like LPS #2 since it's got a waxy lubricate in it that won't evaporate. The WD40 can go in the trash!! Per the manual, the timing is 10 degrees BTC but some like to give it a few degrees more. The point gap is set to .018" and then the final adjustment done with the dwell meter is 24 to 29 degrees. Being honest here, do you have a friend who is more engine inclined that could help? |
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nautiquelover1988
Groupie Joined: August-01-2012 Location: lake tahoe CA Status: Offline Points: 58 |
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can i spray something like wd40 on my weights and springs to see if it loosens them up and helps at all??
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nautiquelover1988
Groupie Joined: August-01-2012 Location: lake tahoe CA Status: Offline Points: 58 |
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i was thinking it had to do with the timing too, is the ATC BTC thing as i pictured supposed to turn with the crank shaft pulley? also where do i check the weights or look at them and what should the timing/advanced timing be on this boat, 1988 sn 2001 ford pcm 351
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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I don't know what you have for ignition and distributor on it, but what you describe almost sounds like ignition timing advance weights that are sticky and don't want to advance, then after 5-8 minutes the vibration frees them up to advance. Anyone agree? If you have a timing light that can show initial timing and total timing you can see what is going on.
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'63 American Skier - '98 Sport Nautique
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SNobsessed
Grand Poobah Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
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I would put a fuel pressure gauge on the output of the fuel pump to see if you are starving for fuel. It will take some fittings to do this.
You need to narrow this down to fuel vs ignition. |
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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62 wood
Grand Poobah Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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Glad to hear you got the flywheel changed!!!
Can you GPS the boat? You need to have a base line to work from.... ie ... Knowing the actual GPS speed and engine RPM at any given speed. What are you spinning for a wheel? Have you checked engine timing and vacuum? |
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nautiquelover1988
Groupie Joined: August-01-2012 Location: lake tahoe CA Status: Offline Points: 58 |
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Thank you everyone for all of the help. I got the flywheel changed, cleaned up the battery and put new connections on the battery cables which connect to the battery terminals, still using the previous starter. Once I did this, the boat fired right up first turn of the key with no hesitation, i took it out three days in a row and had no problems at all. as for my WOT power problem which i am still having, two of the days I went out recently the lake was glassy so i was able to keep it WOT for as long as i wanted. After having it WOT for about 5-8 minutes it kept feeling like it wanted to continue speeding up past where it stops going faster and than finally it was almost like something unclogged and it was able to continue speeding up like it used to. I than backed off the throttle and went WOT again and it was still hesitating where it was before until again i left it for about 5-8 minutes WOT and than it went again. So as of now the only time it will continue speeding up like it should is when I hold it WOT for 5-8 minutes but than as soon as i back off of it, i have to hold it WOT again for the same amount of time before it speeds up like it should again. I have checked the anti syphon valve at the fuel tank and found nothing. Does anyone have any other ideas of what this could be? I also might ad that the whole time during the 5-8 minutes at WOT the boat sounds and feels like it wants to keep speeding up but wont for quite a few minutes.
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71CCMartinique
Groupie Joined: June-15-2012 Location: Ohio River Status: Offline Points: 55 |
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The photos show why your starter sounded bad. The teeth on the starter must have been aligned. with the missing teeth on the flywheel. You will need a new flywheel. The marks you refer to are timing marks. BTC is before top dead center. ADC is after top center.
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62 wood
Grand Poobah Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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Breadon,
I did a quick search of your old posts, have you had the boat for a couple of years? Any problems in the past? Or, just a run of crappy luck the last few weeks? One thing about these early boats, most of the engine issues are in the "Mechanics 101" category. Again, no offense intended on the prior mechanical experience. Just trying to get a feel for where your at. now, Petes crank start mag engine... not sure what category we put that into? |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Don't forget I have a crank start mag engine out in the shop!! "smart azz" !! |
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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In my prior jet boat, I tried to remove the hand-hole cover, clear the debris, and close it in the water. The cover top was maybe 3" below waterline. I figured, "how hard can this be", even though I had read in several forums to never try it. Guess what? I came very close to sinking the boat, fought like hell to get it back on, skinned up my hands and cut an elbow with the effort. I was a complete idiot for trying, was a good lesson on the power of water! |
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'63 American Skier - '98 Sport Nautique
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63 Skier
Grand Poobah Joined: October-06-2006 Location: Concord, NH Status: Offline Points: 4269 |
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Hey Braedon, the good news is the fixes required to get you running well are not hard and all the info you need will be available here. I think you've got to get used to following the suggested steps that very experienced people here are suggesting. If people say don't do the fix on the water, lift the engine with jacks from below, replace the ring gear, check the engine timing, you've got to follow through and do those things or you'll just keep chasing one problem and creating another.
I'm not being critical, but trust what you read here, and follow the instructions, and you'll get that boat back to running great. Get a helper to make some of the tasks easier, some of this stuff is hard to do alone. |
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'63 American Skier - '98 Sport Nautique
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62 wood
Grand Poobah Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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.... or get a REALLY big bilge pump... |
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62 wood
Grand Poobah Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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The starter drive turns the teeth on the flywheel, which in turn spins the engine over. No teeth, no engage, no spin, no start. (or get the breaker bar on the crank end bolt and spin it like Hotboat says ) Not trying to be a smat azz, we all have to start somewhere, but do you have any mechanical experience? |
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hotboat
Gold Member Joined: March-28-2009 Location: Conn Lake Pa Status: Offline Points: 814 |
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Agreed, boats in the water, he may not want to paddle from dock
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Brian
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Yes, I do realize you can turn over the engine with a socket on the crank but that doesn't answer the initial question being:
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hotboat
Gold Member Joined: March-28-2009 Location: Conn Lake Pa Status: Offline Points: 814 |
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Brian
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Sorry, but I did not see or find another post of yours in this thread?? So, what does happen when the starter pinion get to the the broken teeth? |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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No, not really!! The best method without having a means of hoisting is to use two small bottle jacks under the exhaust manifolds. The search feature is a wonderful tool!!! Did you hear about the 2x4 from that "mechanic"?? |
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62 wood
Grand Poobah Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527 |
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You need to disconnect the prop shaft and slide it back which would normally require loosening the shaft log. This could cause a pretty good leak. I dont think I would chance flooding my boat.
Put it on the lift or trailer. |
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nautiquelover1988
Groupie Joined: August-01-2012 Location: lake tahoe CA Status: Offline Points: 58 |
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Ive herd to lay a two by four across the boat is the best way to lift the lower end up to disconnect the tranny and bell housing in order to change the flywheel with the boat still in the water, what do you think about this, does anyone have better methods?
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hotboat
Gold Member Joined: March-28-2009 Location: Conn Lake Pa Status: Offline Points: 814 |
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U refer back to what I already said of course : )
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Brian
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Then, as mentioned, what happens when the starter pinion gear get's to the missing teeth on the ring gear??? |
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hotboat
Gold Member Joined: March-28-2009 Location: Conn Lake Pa Status: Offline Points: 814 |
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You can turn the motor with a socket on bolt in the front of crankshaft
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Brian
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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No, The ring gear isn't hard to replace. It involves more man hours than skill. You'll need to jack the tail end of the engine up, remove the trans and bell housing and then the flywheel. The gear itself will be available at your auto supply. It's a heat shrink fit onto the flywheel. No, I really would not try to screw around with turning the engine over to a good spot for the starter pinion gear to engage. Think of it this way - what happens when the engine turns over to where the teeth are missing?? I'd like to see a picture of the starter pinion gear. What about that "mechanic" and the engine timing?? |
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nautiquelover1988
Groupie Joined: August-01-2012 Location: lake tahoe CA Status: Offline Points: 58 |
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the pinion gear on the starter is completly fine, looks as if it were brand new the whole way around. the starter has definatly had some water in it a few times thats why im assuming it went bad. is that ring gear hard/expensive to replace, also is there a way for me to turn it so the starter can engage?
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