mystery clicking noise

[Benny1963]

fired motor up today and it has a consistant clicking noise as it runs 1983
evinrude 150 crossflow the motor has very good compression.and the power head is 2 years old it runs great but has a consistant clicking noise
a very fast clicking noise any input would help thanks bennyb

 

[tashasdaddy]

Re: mystery clicking noise

check spark plugs, and wires for shorting out to block, or cowl locks. 99% is clicking increases with rpms, cracked ceramic insulation on plugs. best to check at dusk or dark so you can see arc.

 

[Benny1963]

Re: mystery clicking noise

hi ts dad checked engine at dark last night no arcing new champions
started after i pulled lower unit a couple of months ago may try unhooking cables . its in neutral but it may be a little out of adjustment heard that could cause noise shifts good though will double check coils and wires
the sound is quite mechanical sounding may be coming up lower
any areas to look would be helpfull
thanks
bennyb

 

[guy74]

Re: mystery clicking noise

If it's not in the LU what about a loose magnet on the flywheel?

 

[flabum]

Re: mystery clicking noise

If it's not in the LU what about a loose magnet on the flywheel?

Not on a crossflow

 

[flabum]

Re: mystery clicking noise

Take the plugs out and roll it by hand, see if you feel anything funny.

 

[Benny1963]

Re: mystery clicking noise

heyflaubam just had heads off rotating ***. seems good and solid.
think prob may be likage or lower prob its fully in neutral and spins free .
with out click .not sure going to keep looking.
bennyb thanks everyone

 

[flabum]

Re: mystery clicking noise

If the heads are still off, roll the motor until a piston starts to move down, stop rolling and push down on the piston, if the piston moves a little, you got a problem...... check all the pistons this way.

 

[Benny1963]

Re: mystery clicking noise

hey flaubam heads are back on its running goog check for play when i had the heads off .it was tight power head internals are fresh but i see what your gettig at. will check timing and eradjust lower to make sure its not clutch dog
chattering.almost sounds like its in the reeds .
any more advice will be great. if timing is good . iwill probaly run the hell out of it .until it goes whatever it is .
and drop to a smaller looper 4 cyl because my boat is a little overpowered
with the 150. 17ft mckee craft rated at 120 .
and will hopefully lose some weight st transom.
thank you Bennyb

 

[flabum]

Re: mystery clicking noise

does it click while in gear? When was the last time you checked the gear oil? Can you tell where the noise is..... top or bottom ....one side or the other?

 

[jay_merrill]

Re: mystery clicking noise

You can buy a mechanics stethoscope at your local auto parts store. It looks pretty much like the one your doc uses but has a long rod instead of the flat head. They are great for pinpointing noise.

 

[Benny1963]

Re: mystery clicking noise

hey ran my motor on muffs today used tube to check for noise probaly
not in lower its hi on the motor almost sounds like its in the intake manifold or at the flywheel does it in or out of gear when you kill the motor it clicks as the motor stops rotating turned motor over by hand thru all the pistons strokes feels smooth no play back and forth i guess my next move is to
pull flywheel but i dont think my motor has the the magnets that loosen
but it sure sounds like its comeing from flywheel or high on the motor hope i can repair without pulling power head,
thanks everyone benny b

 

[HighTrim]

Re: mystery clicking noise

I think it has to do with the fact that you cut the heads. Dhadley would be best to advise you. By any chance, if you hit the primer does it go away?

 

[Benny1963]

Re: mystery clicking noise

hey hi trim it was ticking before head gasket failure
i had the starboard head cut . but i only had to take 006 th on the head
to clean it up . the head had not been cut prior . the machinest said that he had cut up to 015 on some of the crossflows . but mr hadley said no more than 010 so i would have bought a head . if i would have had to take more
because i know hadley is the man. can the power head be ran with water hose to pickup tube with lower offfor just a few seconds to see if its in lower,
it sounds like it is loud in the exhaust houseing.but not sure .
may pull carbs to check reeds . but not sure if the reeds could make that sound . motor runs great.also not sure if there is anything under flywheel that could do that . theres no play in rods , have fully checked by turning over and pushing down on piston on the down stroke. it is a copnsistant clicking in or out of gear . it started doing this after i had to unstick lower
froze at crank . lowertook alot of punishment getting it off
thank yall for following this for me any suggestion on what next or how to pinpoint the prob ,
Bennyb

 

[Lone Duck]

Re: mystery clicking noise

Do you think that when you were banging around the lower unit, that you misaligned the crank shaft? Give it a smack on the top with a dead blow mallet. Then try getting lift the other way. Sounds like the crank is offset and the rod or some thing under the flywheel is catching. It's rare but it happends. Good luck

 

[flabum]

Re: mystery clicking noise

noise can travel and sound like it's comming from somwhere else. Yes you could run the motor as long as you like with a hose hooked up to the water tube. As long as the motor gets water, it can run indefinately without the gearcase. It will be loud. You can put a trash can full of water up to the mid section to quiet it.

 

[Benny1963]

Re: mystery clicking noise

hey man im going to run this thing tommorrow its still clicking .im going to the river and pull it up to 5500 for a long run 10 15 miles and see what happens this is the first time i have run it on the water since i did head gaskets waterpump and thermos , sounds good on muffs but you know how that is
will post on clicking sound after i run it ,may get the *** and tear it down the ticking is a little aggrevating ,
thanks flaubam for sticking with thread
BENNY B

 

[flabum]

Re: mystery clicking noise

Just take that playing card out of the spokes first :0)

 

[jay_merrill]

Re: mystery clicking noise

If you think the problem is mechanical, I would think about the 10-15 mile run. Metal parts banging against one another for that long can't be a good thing.

I also suggest going back to TashasDaddy's thought - a shorting coil. When they leak voltage they do click. You might want to pull the plug wires off of the spark plugs one at a time and make sure the open end of the boot is facing out ... fire it up and see if that particular coil is arcing from the casing or plug wire. I had a similar problem not long ago and found that it wasn't apparent at low rpm until I took the natural grounding point away by pulling the plug wire. As soon as I did, the arcing was immediately visible and the clicking could be easily heard.

 

[flabum]

Re: mystery clicking noise

If you think the problem is mechanical, I would think about the 10-15 mile run. Metal parts banging against one another for that long can't be a good thing.

I also suggest going back to TashasDaddy's thought - a shorting coil. When they leak voltage they do click. You might want to pull the plug wires off of the spark plugs one at a time and make sure the open end of the boot is facing out ... fire it up and see if that particular coil is arcing from the casing or plug wire. I had a similar problem not long ago and found that it wasn't apparent at low rpm until I took the natural grounding point away by pulling the plug wire. As soon as I did, the arcing was immediately visible and the clicking could be easily heard.

If it's a coil, he will find out as soon as he tries to get on plane.

He did say he had a lot of trouble getting the lower unit off, hope he didn't crack the lower ball bearing race while hammering the L/U off.