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    90 HP Foirce, follow-up question

    This may be my final question on this thing, depending on whether or not I can fix it. 1996 90 HP Force, blew a head gasket, which froze a cyl. I got it unfroze, middle pistion (where the gasket leaked) has bad compression (50 psi), other two good (about 140). Took the head off, bore looks...
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    1996 Force 90, worth fixing?

    This is a follow-up to an earlier post, now that I have more info. Fortunately this is a case where I have lost nothing and might gain something. I bought a boat with this motor (96 Force 90 HP) knowing it had problems (frozen block). I intended to immediately sell it as a re-builder but on a...
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    1996 Force 90, bad compression

    Hey everyone, I picked up a boat that had this motor. It was purchased knowing the motor was bad. I'm trying to figure out if I should attempt repairing the motor or just wait for the new 4-stroke in about a year. The top and bottom cylinders have good compression, about 140, the middle one...
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    Mystery electrical problem for Suzuki DT140

    Hi, I have an 88 Suzuki DT140 with a very low battery drain when the battery is left connnected. It is originating from the Rectifier Assy and the Rectifier/Regulator Assy that sit above the CDI unit. Each one has a white wire that is fed from battery power (first to the starter solenoid hot...
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    1997 Yamaha 150 jet - powerhead failure

    I have limited info on this but my buddy's boat apparently has at least a fried piston (zero compression). Not too many hours on this, and no apparent & obvious sub-failures (i.e. clogged water passage, worn impeller, etc.). Are there any common failures on these motors that would lead to...
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    What generally causes high-speed missing?

    I have been running a "new to me" 1988 Suzuki DT 140 for a few hours. It's been running fine but on the final leg back to the dock today I felt a distinct missing (not real bad) running about 4600-4800 rpm. I previously (before I even ran it) cleaned out all carbs and it idled fine when we got...
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    Conclusions on Suzuki carbs

    Having been through several orderals on Suzuki carbs (85-88 vintage on 115 & 140HP) I have come to several conclusions to keeping these suckers running. I'm curious what the experts think about the following list, your comments are welcome.<br /><br />1. Always drain the carbs after running if...
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    Running a Suzuki DT140 w/o carb cover

    Is it okay to run a DT140 for a test run without the carb cover? It won't be a dusty day or anything and will only be for 20-30 minutes max.<br /><br />Thanks,<br />Biederboat
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    Still working on 1988 DT140

    I thought I'd post a new topic on this as it's hopefully narrowed down a bit. Thanks to all those who helped me and, yes, it does have fuel/water separator with a new filter. Here's where I'm at now:<br /><br />Motor basically starts "semi-okay" in the driveway. It idles at about 1100-1200...
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    Starting a 1988 Suzuki DT140

    Hello,<br /><br />I recently acquired a 1988 DT140. It supposedly just had dirty carbs as the previous owner ran a tank dry and pulled in a bunch of fowl gas. I cleaned out the carbs which were pretty gunked up in the bowls. Compression is fine (135 all cyls).<br /><br />I had the motor...
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