Lyttlebyrd
Recruit
- Joined
- Sep 3, 2009
- Messages
- 3
Hello Forum:
I have a problem - yes, yes, I likely have many. This is lengthy - but I have noticed that the wise fellows always want lots of info.
15 foot aluminum runabout, the motor is an 82 Evinrude 35 HP. (E35RCND). Last season the motor ran well - no problems. Stored in an unheated garage over the winter - mountain community - can get very cold - but the weather was warm when we tried it out this season.
The motor has planing "wings" (extended leg also). When I tried out the motor in the driveway - I had it immersed up to the planing wings - the "pee" stream was very weak - drops or non-existent - white smoke from the outlet - may have been steam. Ran it for only a few minutes - the head began to sizzle so I shut it off. Figured this was an impeller problem - got a new one & replaced it. By the way, blowing air through the water tube at the power head sends air out the copper tube. But when i plug the end of the copper tube - air still finds some exit somewhere but I cannot tell where - it's much less flow than when I remove my finger from the end of the copper tube.
Local mechanic - extremely knowledgeable - advises that I may not have had it deep enough when I tested it and he thought the old impeller was OK - but a new one was inexpensive and better.
Re-tested in the river - pee stream came on - strong then quit. Then started again, then quit, then started again then quit - did not return - engine got hot so I shut it off. Lots of bubbles from around the seam between the gear case and the leg.
Back to the mechanic (he's too busy to get at my motor - said it would take months before he could look at it). He figures that there may be an exhaust leak from the head gasket that initially allows the water to go through the water jacket but upon building up pressure stops the water - he was unsure. Motor starts and runs reasonably well - but overheats. Took the gear case off again, new grommet in the water pump housing for the water tube, checked the impeller looked fine, added gasket goop between the gear case and the leg.
Got a deeper barrel - made sure the water was well up on the leg above the wings. ran the motor - no water from the hole at all.
Questions:
1) Where does the water enter the water pump? Could I have some entrance blocked?
2) How quickly would a head gasket blow - the one in the engine is factory installed - still has the paint?
3) If I am seeing white smoke/steam from the exit hole - is this a sign of a blown gasket?
4) Why does plugging the copper tube not stop the air flow entirely?
5) Looking from above what direction does the driveshaft turn - clockwise? That's what I'm working with.
Today I am going to remove the gear case again (3rd time) and I'm going to connect a water hose to the copper tube and see whether a gentle stream from the garden hose passes through the engine. To check whether the tube is dislodged.
I am also going to put the separated gear case in gear and turn the prop with a drill so that the impeller will turn and check to see whether there is water coming out the top of the water pump. If both tests are positive - I will then address the gaskets.
Whew! If anyone has come this far - thank-you. Let me know have the benefit of your expertise.
Alan
I have a problem - yes, yes, I likely have many. This is lengthy - but I have noticed that the wise fellows always want lots of info.
15 foot aluminum runabout, the motor is an 82 Evinrude 35 HP. (E35RCND). Last season the motor ran well - no problems. Stored in an unheated garage over the winter - mountain community - can get very cold - but the weather was warm when we tried it out this season.
The motor has planing "wings" (extended leg also). When I tried out the motor in the driveway - I had it immersed up to the planing wings - the "pee" stream was very weak - drops or non-existent - white smoke from the outlet - may have been steam. Ran it for only a few minutes - the head began to sizzle so I shut it off. Figured this was an impeller problem - got a new one & replaced it. By the way, blowing air through the water tube at the power head sends air out the copper tube. But when i plug the end of the copper tube - air still finds some exit somewhere but I cannot tell where - it's much less flow than when I remove my finger from the end of the copper tube.
Local mechanic - extremely knowledgeable - advises that I may not have had it deep enough when I tested it and he thought the old impeller was OK - but a new one was inexpensive and better.
Re-tested in the river - pee stream came on - strong then quit. Then started again, then quit, then started again then quit - did not return - engine got hot so I shut it off. Lots of bubbles from around the seam between the gear case and the leg.
Back to the mechanic (he's too busy to get at my motor - said it would take months before he could look at it). He figures that there may be an exhaust leak from the head gasket that initially allows the water to go through the water jacket but upon building up pressure stops the water - he was unsure. Motor starts and runs reasonably well - but overheats. Took the gear case off again, new grommet in the water pump housing for the water tube, checked the impeller looked fine, added gasket goop between the gear case and the leg.
Got a deeper barrel - made sure the water was well up on the leg above the wings. ran the motor - no water from the hole at all.
Questions:
1) Where does the water enter the water pump? Could I have some entrance blocked?
2) How quickly would a head gasket blow - the one in the engine is factory installed - still has the paint?
3) If I am seeing white smoke/steam from the exit hole - is this a sign of a blown gasket?
4) Why does plugging the copper tube not stop the air flow entirely?
5) Looking from above what direction does the driveshaft turn - clockwise? That's what I'm working with.
Today I am going to remove the gear case again (3rd time) and I'm going to connect a water hose to the copper tube and see whether a gentle stream from the garden hose passes through the engine. To check whether the tube is dislodged.
I am also going to put the separated gear case in gear and turn the prop with a drill so that the impeller will turn and check to see whether there is water coming out the top of the water pump. If both tests are positive - I will then address the gaskets.
Whew! If anyone has come this far - thank-you. Let me know have the benefit of your expertise.
Alan