1999 Johnson J25RLEEN problems.

[goodtimes]

Hi guys, my first post here and unfortunatly its not a good one...

Just got a 1990 Fisher 14 SV-14 DLX with a 1999 Johnson J25RLEEN 25HP engine from a outboard mechanic. Gave me 30-day warranty on engine/boat. Took it out last week for a test run and had several issues.

1. Primer/choke pump O-rings messed up and will not prime cold engine, also was leaking.

Removed and replaced O-rings and works like a charm now.

2. When first started water was coming out of back at idle not too strong but when it warmed up it would not shoot water out of the back at idle and the engine got really hot and burned my wrist when I was trying to see if the water lines were clear. It would start to spray when I would get more speed but again very hot water coming out.

We removed the lower unit and to my surprise the impeller/water pump was brand new. We also removed the head cover to check the thermostat and it was new also. I noticed that they were not using the right grommet #70(302497) to seal the pump to the water tube. Could this be the cause of not getting enough water up to block? Also the impeller housing spacer #64(326692) was melted on the top portion. The mech says "it's ok, we wil cut the top portion of the spacer and the grommet should work". I'm just going to get the right grommet and a new spacer.

3. At WOT the engine really didn't have much power and would bog down sometimes.

I suspected the primer/choke pump O-ring leaking and suppling the engine with more fuel resulting in less power(fixed now). Compression is 85lbs on both cylinders. I noticed the foam insulation underneath the cowling is peeling off and some was in the carb throat. The carb was cleaned/tuned right in front of me by the mech before I took it out. I decided to clean it again last night and everything was very clean but I noticed that insted of the core plug #4(326692) there is a screen on both side of the carb. The diagram only shows one side and its a core plug. Why would there be a screen insted of a core plug? Also the low speed needle was set to 2 1/2 by the mech. Should'nt it be 1 1/2 turns out?

Anyone got any suggestions?

Thanks

 

[bgbass.1]

Re: 1999 Johnson J25RLEEN problems.

first your compression seems low i have the same engine and mine is at 105 both cylinders.you should try to decarbon and check again make sure engine is up to running temp. on the screen i have the same thing dont know why but it works ok 21/2 tuns is ok.

 

[goodtimes]

Re: 1999 Johnson J25RLEEN problems.

I checked the compression while it was cold. I should've checked it while it was at running temp. I just sprayed seafoam in the cylinders for it to soak overnight. Will decarb and check compression as soon as I get the head cover gasket and get this back together.

My main worry is the water pump. When the mechanic tried to remove the impeller to inspect the key the shaft came out about 3" but the impeller won't budge. Is the shaft suppose to come out that much? Would it cause any misalignment of the bearings/washers? I could put it in gear and turn the shaft by hand, it works fine but I'm hoping a bearing/washer didn't fall in the lower unit.

Any pros or cons on this engine? My first outboard so don't know much, but learning pretty fast.

thanks for your help

 

[goodtimes]

Re: 1999 Johnson J25RLEEN problems.

Yesterday, when I had the head cover off I decided to check for obstructions in the water passages. I poured some water down the thermostat hole and water poured out of the water tube. I poured some in the hole on the upper port side but nothing came out. I'm not sure if that is the exhaust port and don't know if I should have put water in there. Did I screw something up??

 

[goodtimes]

Re: 1999 Johnson J25RLEEN problems.

Any suggestions??

 

[bgbass.1]

Re: 1999 Johnson J25RLEEN problems.

the shaft will pull out of lower unit you will be ok just slide it back in i usualy give it a littlte turn to make sure its lined up. the impilla assembly should slid off make suer you are going right way.if it still wont move give a tap with rubber mallet.

 

[goodtimes]

Re: 1999 Johnson J25RLEEN problems.

You know if I got water in the crank case by pouring water in that port hole?

thanks for your advise.

 

[bgbass.1]

Re: 1999 Johnson J25RLEEN problems.

if im thinking the hole your talking about left side on top corner your ok. if it did go into exkaust you get water ouy of there when you are running anyway

 

[goodtimes]

Re: 1999 Johnson J25RLEEN problems.

Yes, left side top corner. Is that the exhaust port? Didn't want to have water sit in my case while I wait for the head cover gasket from the mech. So.. I took out the plugs and sprayed de-carb in it. I did a cold compession test and they did come up to 105 but I was pulling the rope a lot harder now. Should get it all done tomorrow.

I just hope we figure out the overheat issue. I'm hoping it's not a exhaust gasket leak..

What boat do you have it on? What prop you running?

thanks again


I

 

[bgbass.1]

Re: 1999 Johnson J25RLEEN problems.

that opening shoud be where your water comes out from water pump put run a hose to rightside there should be a place at bottom to attach so water runs out. I have a 95 tracker im running a 101/2 x 9 stainless steel boat is heavy with all my equipment. where i fish mostly they have a hp limit thats why i have the small motor it came with a 40 johnson. the 25 moves well i played a little with the cab. so now its a 35. let me know if you need any more help. dont forget to torque that head gasket and dont use sealer.
mike

 

[goodtimes]

Re: 1999 Johnson J25RLEEN problems.

How heavy is your boat? Checked the diagram for both 25 and 35 and it shows the crankshaft and carb are different part #s. What did you actually do to the carb to get it to 35hp?

BTW I have the "head cover gasket" off not the "head gasket". I should change the head gasket too while I'm at it..

thanks

 

[bgbass.1]

Re: 1999 Johnson J25RLEEN problems.

whenever you take the head off you should replace the gasket it does get sqwished from being on. All I did to get up to 35hp was change intake and carb. they bolt right on i got lucky a friend had a blown 35 so i got it from him. as far as weight im not sure how heavy but I have 2 batteries in back 2 in front pls all my tackle boxes & rods plus 2 people and niether one of us are light around 230 each and i put a trim & tilt on it goes good now.

 

[goodtimes]

Re: 1999 Johnson J25RLEEN problems.

I did not remove the head, only the head cover to check the t-stat. I think I'm going to change the head/exhaust gaskets too while I'm at it.

Do you know what the torque sequence and lbs are for the head/head cover and exhaust cover?

 

[HighTrim]

Re: 1999 Johnson J25RLEEN problems.

there is a specific sequence which is hard to explain without a diagram, a manual would pay for itself a million times over.

 

[bgbass.1]

Re: 1999 Johnson J25RLEEN problems.

ill try to explain this on the head use no lock tight on bolts, the torque head to 216-240 in lbs.do multiple passes clockwise starting from center and work outward.on the themostat cover 60-84 in lbs same thing start in center and work your way out clockwise. hope this helped.
mike

 

[bgbass.1]

Re: 1999 Johnson J25RLEEN problems.

oh yea you can use locktight on that outer cover and put a little bit of sealer on with gasket helps seal from leaking water

 

[goodtimes]

Re: 1999 Johnson J25RLEEN problems.

Got everything back together tonight. When the engine is warm and at idle all the water exits out the exhaust and none from the tell tale. If I give it more throttle then I get a good stream out the tell tale. Is this normal?

 

[bgbass.1]

Re: 1999 Johnson J25RLEEN problems.

it should be coming out the tell tale at idle. do you have it on muffs because that can happen better off in lake or tank.
mike

 

[goodtimes]

Re: 1999 Johnson J25RLEEN problems.

We tested it on the muffs. It was doing the same thing at the lake when I first took it out.

 

[bgbass.1]

Re: 1999 Johnson J25RLEEN problems.

check the water pump it could be leaking at housing and it wouldnt get enough pressure to move water up tube at idle. alco check where tube goes into pump assembly oring could be blocking.