suzuki ss150 runs but wont rev

[mflan77]

I just got a bass boat with a suzuki ss150 and when I took it out it would not get past 1000-1800 rpm. It kinda sound like it was not firing on some of the cylinders. I have read some other post and it sounds like it is the low oil sensor or maybee the water sensor both lights - water and oil are on at the consol. The oil tank is more the half full. When it has water muffs on it seems to run fine but with a load it wont get past the 1800 rpm mark. I see in another post it says you can disconnect those sensors but I dont know where to find them. If someone could plese help me that would be great

 

[mflan77]

Re: suzuki ss150 runs but wont rev

What? Does nobody know how to help. My low oil lights are on and my left water light is on. The boat will not get past 1800rpm. I need to know if my cdi is behind the coil pack case and exactly what wire I cut to disconnect the lowm. As far as the water light goes I'm not sure what it means. my water jackets did not feel to hot to touch the other day when I discovered the first problem. Some replies would be helpful THANKS

 

[JUSTINTIME]

Re: suzuki ss150 runs but wont rev

water in fuel or low water pressure, time for a new impeller

 

[mflan77]

Re: suzuki ss150 runs but wont rev

Yes I think it is time for new impeller. I was working on it last night and when idling I would pull the plug wires 1 cyl. at a time and only a change in idle on 3 cylinders. Could this be related to the lowm. I am still not sure how to disconnect the lowm I have the oil tank off and can see not much looks simple Ijust dont want to disconnect th wrong thing

 

[hankll]

Re: suzuki ss150 runs but wont rev

My 87 DT150 SS, had to unplug the low oil warning module to get all cyl running.
2 plugs were involved. located inside CDI cover down low, and behind 5 and 6 coils. One has 4 connectors and the other I think has 6. Don't remember the wire colors for each. Justntime can help there possibly. I'll look on my wire chart when I get home from work this afternoon. The only thing that happened in my case was I noticed different in my case was I had high voltage charging to my battery, but if I read wiring diagram correctly, it had nothing to do with disconnecting the 2 plugs. Just maybe I had the rectifier go bad at same time.

 

[mflan77]

Re: suzuki ss150 runs but wont rev

Hey thanks for the info. I found a parts list online and now see where the lowm is. They like to call it the low oil warning reset module. I assume that I just disconnect all wires coming from it. I still dont understand why the thing will idle great with muffs on and in water it dont want too. The first time I had it in the water it wanted to go then it just slowed down and would not try to go anymore just at the 1400rpm. It did seem like it was running a little rich so I leaned the oil a little. That did not help nor did new gas.Well I will try disconnecting that lowm and see what happens. I would realy like to get this thing going

 

[mflan77]

Re: suzuki ss150 runs but wont rev

Oh yeah acording to browns marine the lowm is still avalible at the cost of $160.00. I think it was browns I will check again later and let you know

 

[hankll]

Re: suzuki ss150 runs but wont rev

Well, you are lucky that its available. On my 87 it is no longer available, so unless I find a junk motor for parts on my exact year all I could do was disconnect the LOWM and I just have to manually check the oil level. Doesn't seem to hard to do. But My advice would be to disconnect yours to see if that gets you going first before buying another new one, just to be sure thats whats causing your low RPM condition. I am only speaking about what sounds like what happened to me on mine, yours could be another problem altogether. Since Electronic parts are non refundable, you'd end up with a new part that didn't fix your problem. And I'd also mention that I'm no expert on the subject of Suzuki problems and the correct fix needed to get them going. Justintime has been a strong advice source for me and has helped me focus on certain possible problem areas. Good luck

 

[hankll]

Re: suzuki ss150 runs but wont rev

BTW, I was re-reading your original post, when you said it sounded like it was not firing on some of the cylinders, I'd like to clarify that in my situation, I only had fire on the left bank, 2,4,and 6 with no fire on any of the right bank, 1,5, and 7. So if you had some cylinders on either of the the banks firing but not all on one bank, its possible that you have a trigger coil under the flywheel not working. there are 3 which as I understand it, fire 2 cylinders each. So you see thats why I was saying to try unplugging the LOWM first to see if you have fire return. As Justintime mentioned, its possible there is a fuel problem, which can be another dragon to slay in a different method altogether. Just take time to try to isolate what is possibly wrong, and try a remedy and check to see results. I was about to use my motor for an anchor at one point. It just didn't seem like I was going to see it run right. But the LOWM was my problem, and mine IS running very strong, albeit, it still needs the rectifier to get my charging voltage down to proper voltage.

 

[mflan77]

Re: suzuki ss150 runs but wont rev

Ok I got back up to the boat this weekend and did some poking around. It turns out that I am getting fire on all cylinders the problem lies in the #3 carb it is junk completly junk. I took all 3 carbs off and cleaned them but the #3 carb the bottom one is all pitted and has corrode all over and someone at one point broke one of the needles off in it. So if I can find a needle for it I might try to grind the inside back to smooth replace the needle and try to see if that works. I think that the broken needel was all the way seated when it broke.