no water from exhaust??

Hi All, new to the forums, but i have lurked around for some time.
atahe problem i have is i have no water coming from my exhaust?? and yes they get very hot! i have replaced both manifolds and risers, all hoses, rwp, circulating pump, and the rwp was put back on right, oh yea, it is an '86 sn, pcm 351, i am puzzled???? also changed the thermostat(143)- can anyone give me any idea's, i would greatly appreciate it.
I really want to use my boat!thanks, Greg

Check your transmission oil cooler for blockage.

You could try disconnecting the hose between the raw water pump outlet and the engine inlet. Then start the engine briefly and see if water sprays out of the pump. Don't run the engine very long though since it won't be getting any cooling water.

This will at least tell you if the problems with your pump or not.

Try taking one of the hoses from t-stat housing to manifold loose and see if you're getting water there. If water is getting into the t-stat it should be going out to manifold. Did you get the riser to manifold gasket on the right way? 79 can tell you which way is which, I can never recall and always have to look it up.

Ok here goes on the riser gaskets the blocked off section should be to the rear, call and talk to Vince or Richard at skidim to double check but I'm 99% sure thats the way it goes. the hose coming from the RWP should go to the front port of the t-stat house, removeing the t-stat won't do anything even if it is bad it won't stop the flow of water to the manifolds. The two ports opposite of each other feed each manifold. You can disconnect the hose at the manifold and verify that water flows out of both again run just long enough to see if water is going out. What I'm beat is the problem is you have a kink in the hoses going to the mainfolds preventing the water from flowing through them (hoes are too long and not lined-up). If the brass barb on the manifolds isn't lined up right or the hose is too long then the under side of the hose will collapse and prevent the water from flowing through it. The hose should have a nice gradual bend to it and has to maintain it's shape (dia) for the full length otherwise you create a restriction and water always flows the path of least resistance. Rotate the barb a little more if needed, don't loosen it if you do you can create a leak, remember the threads are tapered and thats how they seal. A little trick to help you line up the barb to the t-stat port is position the barb on the right side (drives) straight up and attach the hose to it leaving the end that goes to the housing unconnected and make sure the curve of the hose follows as well then tighten the barb until the underside of the hose touches the top of the housing. Now you can use this as a guide to trim the hose to length, Do the samething for the other side put have it point straight down and it touches the underside if the housings port and trim it to length as well. Once done you should see a continous diameter of hose with no collapsed spots. You'll have to tighten the barbs just a hair more to get them perfect once you connect the hoses. Make sure that the barb is tight already when starting at the 12 and 6 o'clock postions and then attach the hose. Also double check and make sure that you have the correct gasket and are not blocking off the port on the underside of the t-stat housing as well and that there is an opening in the housing that attaches to the intake incase you have the wrong lower housing. by disconnecting the hoses at the manifolds and running will tell you if your problem is in the t-stat houseing gooseneck area. Also you are attaching the hose to the manifolds on the front and not that back, the back is the drain and the front is the feed just want to cover all of the bases I'm sure it isn't but if it is DOOOAAHHH!!!!

thank's, 79, will give that a try this evening,just recieved another new thermostat,and impeller from richard @DIM.
kinda thought the t-stat might be bad??
for 9.00 it's worth a try, will let you know.

79: I see that you posted at 9:11am. Where from? Are you in Florida? Was hoping to see ya tonite. Maybe some other time. Have a cool time at the race.

john

If you are looking for "Correct craft since 1925" and the American flag decal check out White Lake marine

Not sure where every one else hangs their hat, but i'm in Lake Jackson and J_I_H hangs his speedo on Chocolate Bayou.http://www.whitelake.com/catalog/decals___emblems_-_older_boats_409946_products.htm

thanks for the advice, we go up to livingston, conroe,halls bayou, this boat had not been uncovered, or in the water, nor started since 1995,in perfect condition, only problem i had when i finally started it, was an overheating problem,wel from there it went
to a carb, performer intake, electronic ignition, now the next task is mufflers,and a 13x13 acme prop(if i could get the old one off), i need the decal that goes across the transom,just above the swim step.THEN it will be complete.