4 replies to this topic

[Steve-O]

Hello,
This is my first post here. I just got a used Speedster, it was a stolen recovery that I got for a steal (no pun intended) as the insurane had already been paid out. But i had to buy it sight unseen. I haven't started it yet (batteries are shot), but I have a sneaking suspicion that the oil injection may have been disconnected. It looks like it' sall there, but there a re a few things that make me think the previous owner was pre-mixing. Is there an easy way to tell if this is the case? And if so, should I keep misnig or get the injection working again?

Also, the carbs on the STBD side don't seem to move back after opening the butterflies. IS this a common problem? THis is my first jet boat, but I have had a few skis, so I am not a total newbie (although it may sound that way!)

Thanks,
Steve.

[mtrhd101]

Look and see if the oil pumps are still on the engines first, they are located under the carbs. with a short cable going to them off the primary throttle linkage.. If its on premix I would leave it alone, I converted mine several years ago and have been running Klotz R50 40:1 with no problems at all, just a sweet smelling exhaust.. It costs a little more to premix but its cheaper than new engines..

[Steve-O]

Thanks for the reply. When you say you converted yours, what did that entail? Or is it possible to simply leave the oil reservoir empty and just mix in the gas tank and run that?

This is a great forum. First visit I found a bunch of stuff I had been looking everywhere for. Awesome!

Steve.

[doty395]

I just got my 96 speedster last year. This year I lost oil injection in one cylinder. Im in the process of fix my cylinder wall. I spoke with a mech on going to an oil mix in the gas. He said that I need to keep the oil reserve and two lines coming and going from both engines. I will know more when I get in to it. But It is supposed to do with the main crank of the engine and keeping an oil sump in there or something. I'll keep you posted.

[tiggerman]

I just got my 96 speedster last year. This year I lost oil injection in one cylinder. Im in the process of fix my cylinder wall. I spoke with a mech on going to an oil mix in the gas. He said that I need to keep the oil reserve and two lines coming and going from both engines. I will know more when I get in to it. But It is supposed to do with the main crank of the engine and keeping an oil sump in there or something. I'll keep you posted.

He is absolutely correct. Keeping the 2 lines and the reservoir is so your rotary valve drive gear and shaft continue getting oil. Some people prefer to premix, others don't. It may be a good idea on older boats to doo this.