i'm back unfortuanteley. after repairing my beeper(thanks for the help and the radio shack beeper tip) and after installing the new stator and and making sure it was timed properly. we finally got it to crank. port engine is perfect. starboard is very hard to crank and when it does, it runs badly and won't accelerate at all. it barely runs really. this is what we've tried so far. we put in new plugs. trimmed the tips off the wires. took off the carburetor and took it apart and cleaned it. seemed clean and fine. inspected the fuel lines to make sure they are not gray(they are black except one small gray line on the carb. changed the fuel filter. unplugged the two yellow wires and plugged them into the other good engine rectifier, no change. adjusted carb every way we could think to adjust it. checked compresion 140 psi on each cylinder. what else could be the problem?
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one engine ruuning bad on 97 speedster
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timmyboy76
New Member
dont worry about the good motor, but change the fuel line from it, or from tank, gofrom "on" hose from tank, right to carb(bad motor). if works, think'n selector switch/filter...possibility and/or unplug the wire harness from flywheel housing, make sure battery good..
robin savell lloyd
Active Member
excelerator pump ?
Make sure the carbs are adjusted properly too. The low speed should be about "1 1/2" turns out and the High speed should be at "0". be sure both carbs are in sync and adjusted the same. To check the accelerator pump remove the carb cover and spark arrester. When you push the throttle forward it should squirt a small amount of fuel into the throat of both carbs. If it isn't the pump might be clogged or possibly the lines going to the carbs.
Keep us posted on your progress.
Karl
Keep us posted on your progress.
Karl
robin savell lloyd
Active Member
When was the engine that has a problem runing good last? Was it the one you put the stator on? Did you make any other type of repairs to the problem engine? :cheers:
You really need to add you information of your seadoo in you avatar. This way we won't be guessing on what you own, and it will be easier to help in the future. Use mine as an example.
As for your problem, did you blow compressed air through it and carb cleaner? It might appear clean but the passages might still be plugged with crap. Are the spark plugs new and gapped properly? Keep us posted.
Karl
As for your problem, did you blow compressed air through it and carb cleaner? It might appear clean but the passages might still be plugged with crap. Are the spark plugs new and gapped properly? Keep us posted.
Karl
yes it is the same engine we replaced the stator on. i bought it late last summer and it only ran well breifly after i bought it then got progressively worse. the guy i bought it from reported having the same problem. late last year, we took the entire carb apart and cleaned it, but it still ran the same.
robin savell lloyd
Active Member
Why did you replace the stator? are you positive that the spark is in perfect time if so, Do every thing that all have sugested and we will all be thinking harder as to what the problem maybe. fuel selector, and any fuel restrictions and then carb rebuild. :cheers:
for the first time i checked the accelerator pump myself, i'm pretty sure that is at least part of the problem. when you hit the gas, it does have a fuel stream, but compared to the other carb on the other engine, there is a huge difference. when you reach aside the good carb and give it gas, you can even feel the pressure of the gas as well as see a nice stream. when you do the bad one, i can't feel the "swoosh" like i did on the other. this at least has to be a part of the problem, right?
robin savell lloyd
Active Member
you are the man
:hurray:
robin savell lloyd
Active Member
Now do not get me wrong I can be very wrong but if you were able to get the bad engine to operateing temp and you were to very very slowly give it gas it should run ok at mid range and top end if has a bad excelerator pump. keep in mind that I am not allways correct but I am willing to share my view points. Good luck Robin :cheers:
robin savell lloyd
Active Member
I am not sure but from the parts list it looked to me as a 40 mill which I have never heard of so there again I can be wrong. Good luck
timmyboy76
New Member
bn-40i (1)
timmyboy76
New Member
Have you done, anything that was mentioned...
timmyboy76
New Member
you ever mess with the rotary valve....
timmyboy76
New Member
you know how to set it....147*opening, 65*closing.
robin savell lloyd
Active Member
Did you check the compression when you got the boat or after it started messing up very bad. I did some thing stupid last year ran engine hot fixed the problem ran fine. The next day I started haveing another problem but was not runing hot. I wasted alot of time thinking that the compression was good because I was going by what the reading was the day before. What a mistake and waste of time I did. :cheers:
timmyboy76
New Member
pull airbox off, then remove the 4 bolts hold'n the intake on, may need to remove the fuel lines from carb also. With mag piston at TDC, measure from center of RV shaft, and draw line directly across, passingunder lip of bottom of port hole. This will put you at 0*. from there, measure around case, 1478, then mark it(sharpie pen), then measure from center RV shaft and pass the intake port lip on top, to edge, this will give you 0* to measure down 65*, mark that spot. Then re-install the rotary,with lead'n edges hit'n those 2 points, if doensnt line up, flip rotary over.
Whwn finished/lined right, the "right' side port(mag port) should be visible
Whwn finished/lined right, the "right' side port(mag port) should be visible
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