Just picked up a 21ft v-hull with a 115 1987 Suzuki DT with a 13 1/4 - 17 "turning point express" prop. So we took it out on a beat run, and it starts easy and idles calmly. Works great till we get it to about 1500 RPM and it just won't go over that, doesn't die or do anything weird it just won't go any faster than that... I would say 5-6 mph or so. Talked to the previous owner and he was told that it was a bad magneto coil, is there any way that could be the cause? I am going to go down and swap the Primary No. 2 coil for the battery charging coil to see if that fixes it, but I don't know if it is really the cause. Any thoughts on other causes? Thank you very much for any light you can shed on this problem -Glaspar

I have a chance to buy an 08 yamaha 2 stroke that has never been used for 3200 bucks. I think it is more than the owner paid for it 5 years ago from the dealer. Is this motor that much better than any four stroke motor than I can buy today. The most enticing thing for me is the low weight of the motor. Will this 2stroke outlast any 4stroke made in today's market. The biggest negative is the smoke it puts out but if this motor is way mor reliable I can deal with the smoke? Experts please chime in?

new tstat and impeller water still warmer then it should be any help anyone its a 4 h.p. yamaha

I have a 99 DF 70 that I bought a year (been rebuilt). I ran it all last summer. Decided to change oil this year. Checked the oil and it showed to be way over full on the dipstick. Drained oil and got about a gallon out (it did look great and had no indication of water). Replaced filter and added 3 quarts of oil, fan it a bit checked oil and shows to be over mark on the dipstick.

The manual shows 5.2 quarts with a oil filter. My thoughts are maybe it has the wrong dipstick. What should the dipstick length be? Anybody got any other thoughts?

thanks
rickey

Hi,

I stored my Yamaha 6cmh outboard for 8 months.
It starts OK but is not pumping cooling water.
Can anyone let me know what the problem might be please.

Thanks,
Ollie.

Hey guys, First off, I am not a mechanic and have very little knowledge of engines. My dad and I have a 16ft alumacraft with a mid 90's 60hp Yamaha.

The other day, I notice clean 2 stroke oil draining down the outside of the engine. I pulled the Cowl and you could see it pooled in the bottom. I will say that the engine was trimmed all the way up as if we were going to be traveling with it.

I am going to visit my parents tomorrow and I would like to take a look at this. Can you provide some feedback and pointers to check for? Could it be overflowing?

My father mentioned that he has not seen any further oil since leaving it trimmed down for a couple weeks.

Thanks
JB

I have a new 15hp Yamaha 4stroke motor F15CESH with about 6 hours on it. The motor is starting to have to be put in gear twice or so that the prop will engage to forward perform. What's odd is that the motor will push the boat at low speeds until speedup. Then it acts like it's slipping. I checked the prop for slippage in the hub, but it's solid. I can turn the motor turning the prop. This just started happing end of last season just once. Now it happened twice yesterday while fishing. This only seems to happen when the motor is warm but not every time its forward engaged. Do you think I need to adjust the shift rod slightly? The dealer wants $110.00 an hour to look at it. I have no problem with the slight adjustments myself. I rebuilt the top end of my old 115 Johnson on the tailgate of my truck. Adjustments are no big deal if you think that may be tried.

Glenn B.

I just bought a boat with a 2001 Yamaha Salt 150 but it has not got a trim gauge. Do you think the wiring in there in the harness and how do I wire if I purchase one. I am picking the boat up nest Tues. so have not had a chance to look at harness yet. Any advise will be appreciated. Thanks

Hi. I'm having some issues with my 2004 F15 4str Yamaha (single carb). I'll run through start to finish of what's happened...

Ran ok start of season for 5 mins then cut, no start. Took it in, turned out there was a lot of gunk in the carbs and fuel system. Flushed it all out, cleaned carbs, new filter, cleaned all lines. New spark plugs. New fuel, cleaned tank.

Then would start but won't idle. Cleaned carbs again. Fuel pump wasn't pumping properly so replaced. Still no idle. It will continue to run if left on choke, or if revved, but won't idle. Both jets are clear. Carb is spotless!

Been back to dealer for help, and last thing I can think of changing is gaskets between carb and manifold for possible air leak. Can anyone think of anything else that I could check/rule out?

I've only had the o/b for 1 season but it ran a dream all season with no issues at all. Thanks in advance!

I have a 2012 Yamaha T9.9 Hp. Recently I discovered an odd water leak. About 5 minutes after starting , I noticed a trickle of water running out from under the plastic shroud below the lower cowl. This appeared right under the bolts that fasten the shroud. Inside the lower cowl , the engine is dry. The "pee" hole at the back of the motor has a good stream of water coming out. I have talk to two dealers and they have no idea what is wrong. I am stumped. Help !

Hi i just purchese an used v6 150 cv Yamaha Lfteo and i would like to install the remote oil tank but i didnt find the plug on the engine side can somebody help me thks

I was running my boat around 4500 RPM .All sudden I lost lost power down to 300 to 400 rpm then stalled. Seem like the motor was starving for gas. Check the primer bulb and it was soft.
Start the motor up again and wasn't able to go pass 2000rpm . Limp to the fishing place.
Fishing for a few hour. Started the motor up and everything was fine again. Also a buddy of my
pour a whole bottle of startron fuel in the tank after pump only 10 gal of gas. Could that cause my motor bog down? After spending hours googleing the ox66 bogging down. I decide to change vst filter 2 lower pressure fuel pump , send the injector for cleaning, replace fuel and water separator. Is there anything else could cause it bog down or lost rpm. Any info will be helpful.

Thanks
.

Hello, I'm new to this forum and also new to the 4 stroke technology. Quick to the point I have a 2003 4 Stroke Yamaha 25 HP (F25TLRB) and it is stuck in forward at ALL times. This happened all of a sudden. Regardless of throttle position weather forward, neutral, or reverse the engine is ALWAYS in forward gear, even during cranking! I just bought the boat two days ago and it test drove excellent, now two days later I'm a bit worried. The throttle movement is smooth and I have observed where the linkage connects to the "gearbox" for a lack of a better term. I just can't visually see where the problem is. I see no missing springs or worn parts. Any help would be greatly appreciated. I am waiting on a master repair manual in the mail to assist with all future repairs. Thanks in advance.

my 2002 Lund pro v with 200 hpdi has gauges for trim, fuel, rpm, speed. I like to add gauges for water temp, voltage, fuel pressures both low and high, 2-cycle oil level, and oil/fuel mixture. Has anyone done this or know how to do it? thanks

I have no spark on #3 and #4 of my suzuki 1984 Dt115hp outboard, I changed leads to see if it was the coils and the coils work fine on #3 and #4 but no spark when connected up from cdi as #3 and #4 only work connected to #1 and #2, does this mean a CDI problem or could it be the stator, I don't know how to test for voltage on the stator, but it seems strange that it would only affect #3 and #4 if it was the stator. Can anyone help if they have had this before, I have had a coil go before on #3 but worked fine after I replaced the coil, but I took it out and had no spark #3 and #4 and would not plane.
It ran with only 2 cylinders and one at one stage. It had been running at least 2 weeks ago fine on all four cylinders.
I definately have no spark on #3 and #4 please Help.:confused: