Recent content by 99yam40

so ,do you know how to use a timing light to check the spark timing on any motor? U tube is your friend

I would blow compressed air up the TT while running on muffs or in a tank of water to see if that moves the blockage around more to clear the TT

my only thoughts are, if it does not burn in the cylinder as it is supposed to it will burn in the exhaust when it mixes with the other cylinders exhaust

hell my 1999 C40 developed a hole next to the stat some years ago that I had welded up. I always flushed with fresh water after coming in from fishing salt water what are you calling newer motors?

If it is a small one and easy to remove I would, are you just going to move the air around inside, not replace it with fresh from outside? Fuel fumes could build up under there if no fresh going in

at least you would know the fans would not run the battery down if they just ran off the solar panels

I wonder if beating on the drive shaft with a brass hammer so you do not deform the steel might help break loose the rust. maybe trying to go in farther and then pulling back out would get it to move some and allow some lube to get into that area

I am not knowledgeable about this motor, but I would think that the ECU would send out a voltage to the sensors and they would send back a portion of that voltage for a reading. see if that voltage being sent out to those sensors and any others goes away when this happens. Just a wild guess from...

did that cause the plugs to carbon foul like the OP is showing? I don't think so. the plug he shows is burning oil is my guess. rings or valve seal

does the prop fit back on OK?

If the vent is working why would you be hearing hissing in another spot when pulling fuel out of the tank?

do you realize when fuel is removed from the tank, air has to get into the tank so that a vacuum is not formed

according to the parts breakdown only things behind the prop are the #9 prop nut washer, #10 prop nut, and #11 split pin. the thing in front of the prop would be #7 thrust holder

I do not know how on that motor, but I would think testing while the problem is happening would be needed to compare to when everything is normal to see what is causing the code

did you do the 3 things listed in the pic you posted?