Suzuki 150s won't go above idle

Well, it looks as if my problems are solved (at least the running above idle one). I got new HP and LP filters from Marc at Wefings and decided I'd try a couple more things before I installed them.

I had previously taken out the fuel flow turbines and got some advice that the primer bulbs were not really needed. So, I took the primer bulbs out of both fuel lines and (after making sure they were free of debris and spinning well) reinstalled the fuel flow turbines. Both engines run well now at all speeds. I suspect that the primer bulbs were somehow restricting fuel flow above idle, at least on the Port engine.

Now, the only remaining issue is a pee hole problem on the Starboard engine. I've run three treatments of salt-away through both engines. The upper flush port connects somehow with that pee hole and on the Port engine, water freely flows out of the hole when flushing. On the Starboard engine, no flow no matter what. It doesn't overheat so I suspect some sort of obstruction. According to the manual, that tube connects directly to the block. I've run a wire in about 9" and there is no obstruction that I can find. I had good flow up until about a month ago. Maybe I need FloMax... :roll:

Next step is to use my air compressor, dial it down to about 20PSI and try blowing it up the hole/tube. If that doesn't work and it's still not overheating, I'll leave it until I haul for an oil change and can get the side cover off. If anyone has any other ideas I could try, please send them on!

Charlie
 
When I run them, I do it in the water. When I flush them, it's out of the water through the two flushing ports on the engine. I dont run them while I flush them.

Charlie
 
You indicated that you are running two completely separate engine systems. Still C-razy has a single fuel control valve that selects right or left tank. The single RACOR input takes fuel from the outlet of the fuel valve and then has two hoses off the RACOR, one to each engine. I'm kinda thinking that I'd like to truly separate the engines, add a second RACOR and really separate the system for true redundancy. But I'd want to be able to cross feed the fuel if needed in an emergency. Does your boat (thread originator) have a cross feed as well so that you can get fuel from either tank to either engine in an emergency? If so, do you have a valve type that does that job?
 
No Harry, it does not. With two large engines, If I have any kind of trouble with either that makes it unusable, I've always got the other one and I'm kind of a proponent of the KISS principle!

Charlie
 
Well said. I think I'd like to separate the two fuel systems next spring. I do run both engines all the time, so fuel consumption goes down at the same rate. I also typically fuel both tanks from a common source at the marina or service stations, so bad fuel would likely go into both tanks anyway. KISS has served me well over the years. But my deep space spacecraft experience does make me ponder "block," cross strapped redundancy. But then I'm not spending tax payer money on Still C-razy either.
 
We're all good to go now! Put about 40psi of air on the telltale tube of the Stbd engine this morning and moved whatever was in there a little bit. Then with about 10" of flexible wire in there either broke it up or pushed it back into the block. "pees" fine now! :thup

Charlie
 
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