Suzuki DT 115 oil flow problem

[audiodoode]

Hi, and thanks in advance for any help.<br />I have a 1988 "Zuki" DT115 that recently (yesterday) gave me a fit. I got it started (finally) and let it warm awhile. When I jumped it up on plane, everything seemed fine, but then it just died. When I tried to start it immediately after, it would just click. 10 secs. later, it starts, I could run it at just above idle speed, but the oil flow sensor would give me a 1 sec. beep every 5 secs. This went on almost all day. At the end of the day, it let me get up to a whopping 3500 RPM, but no more. The only difference was, it was about 30 degrees warmer then. Sorry about the longwinded explanation. If you have any questions, feel free to ask....please....no, really, I mean it.<br />1000 thanks,<br />Frank S.

 

[DJ]

Re: Suzuki DT 115 oil flow problem

audiodude,<br /><br />Your oil warning is trying to tell you something. You need to get to the bottom of that-NOW!<br /><br />Otherwise, you will cook your engine, if you have not already done so.

 

[manitoba1]

Re: Suzuki DT 115 oil flow problem

I had a 1958 55hp suzuki which gave me the identical symptoms to what you describe. There is no silver lining to this cloud though. One of the oil injector lines had come off and I lost oil to the upper cylinder. That dying of the engine you describe, with the failure to turn over is temporary seizure of a single cylinder. My guess is that you'd find low compression on one or more cylinder. Probabably you will find some reason for little to no oil to one or more cylinder. If my hunch is correct you're quite likey looking at a rebuild or replacement. The compression test will tell the story. The end to my story is that I now own a 2000 Suzuki 70hp 4 stroke which can only say wonderful things about.<br /><br />Good luck

 

[audiodoode]

Re: Suzuki DT 115 oil flow problem

Thanks guys. I'm hoping Manitoba is wrong! I read my service manual (go figure) and found that my oil filter is also my oil flow sensor. I know the engine was getting some oil, as it was smoking like it always does. The week previous, I had taken off the oil reservoir and cleaned it. Major gunch in the pickup to say the least. I didn't however, look at the oil filter. There was some serious goo in there as well. I'm going to take it out this weekend with fingers crossed, rabbits foot in hand while knocking on wood. I'll let you know how it goes. Hopefully not my money, then my clothes. Thanks again to you both, <br />Frank S.

 

[audiodoode]

Re: Suzuki DT 115 oil flow problem

Well, it all went well. I cleaned my oil flow sensor and fired it up. It ran like a scalded dog. One more strange thing happened though. I was running at 5500 RPM for about 20 seconds and it died out to zero. I think it's a failsafe measure to keep you from running at that level, but I'm not sure of it. I normally don't run it that hard, so I won't have to worry about that happening again. Thanks again to you both, I'm breathing better now.

 

[jim dozier]

Re: Suzuki DT 115 oil flow problem

According to my Clymer Suzuki manual some oil injected Suzuki's have a reset button for the oil system. If the oil flow is reduced either by a clogged filter or a low oil level the engine will be electronically limited to something around 1/2 throttle. This can be overridden by the reset button. The fact that you found gunk in the oil tank would point to a clogged filter also which you apparently found. I believe my Suzuki 1987 DT-85 has a max rev limiter in the CDI ignition also. But I don't have a low oil reset button so I don't know which ones do. I think you have found both the max rev limiter and the low oil pressure rev limiter. You be crusin.

 

[audiodoode]

Re: Suzuki DT 115 oil flow problem

Thanks JimD, and yes, I'm still cruisin. This motor runs so well when it's right, it's kinda scary. I know all good things have to come to an end, but I'll hate to see it go when it finally does. The boat could use a little more horsepower, but then again, so does the bank account. It seems to be alot better than a 150 when it comes to fuel consumption too. More of a difference than I expected.<br />Thanks to all for everything,<br />Frank S.