1989 Evinrude 150 having problems

Haffiman

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Re: 1989 Evinrude 150 having problems

I would have followed following procedure:
1: Verify and check timing,spark jump on tester, check/change plug wires.
2: Redo compression test, write down the numbers!
3: When 1 and 2 confirmed ok, carbs.
 

emdsapmgr

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Re: 1989 Evinrude 150 having problems

You seem pretty confident that the engine has good spark. Your description that all cyls are not contributing to the engine when running could be a fuel issue. If you have old, dried fuel gelatin clogging some of the carb passages, they won't flow fuel and could have an internal fuel restriction, causing no fire to some plugs. At this point, time to pull the carbs apart and remove the jets and clean all the passages with a gas cleaner, like a gumout type product. An airflow restriction can cause an engine to run pooly at high rpm's: Make sure the air vents in the cowling are not clogged with debris, also-the air vent in the lower cowling under the bottom carb.
 

jpcjpc88

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Re: 1989 Evinrude 150 having problems

You seem pretty confident that the engine has good spark. Your description that all cyls are not contributing to the engine when running could be a fuel issue. If you have old, dried fuel gelatin clogging some of the carb passages, they won't flow fuel and could have an internal fuel restriction, causing no fire to some plugs. At this point, time to pull the carbs apart and remove the jets and clean all the passages with a gas cleaner, like a gumout type product. An airflow restriction can cause an engine to run pooly at high rpm's: Make sure the air vents in the cowling are not clogged with debris, also-the air vent in the lower cowling under the bottom carb.
Thank you..yes i checked the air vent in cowling and the lower vent by bottom of carb theres no debris. So i guess i will allow mechanic to rebuild my carbs and then see where we are after that. The previous owner said he never had carbs worked on. But he Only owned the boat for 4 months. And when purchased he said he has big boat now so this one just sits. He told me it was last ran 2 weeks prior to me purchase. Everything seemed well when he took me for test ride but after i purchased and really tried to open her up thats when i started noticing sluggish things at about 4000 rpm. Weirdest part is how all of a sudden last i used she will not go with cowling on maybe because the air/fuel mixture? The carbs might not be functioning with the air/fuel mixture when cowlng on? I am boggled thanks everyone for your comments greatly appreciated.
 

Haffiman

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Re: 1989 Evinrude 150 having problems

Does your mech have a dyno at his shop to run the engine under load?
 

jpcjpc88

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Re: 1989 Evinrude 150 having problems

Does your mech have a dyno at his shop to run the engine under load?
What does a dyno look like for an outboard engine..he used the earmuffs with hose when diagnosing it but im not sure if he has a dyno in the shop. He has been is business for 27 years so i hope he has all the proper things. Its a pretty big shop he mostly works on big boats but he has no problem helping me out. Most mechanics i called wouldnt even look at my engine for 2 weeks or more. I called around from yellow pages and ran into eagle marine the owner burt seemed very nice and he looked at my engine that day just they cant work on it until next wednesday.
 

Haffiman

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Re: 1989 Evinrude 150 having problems

Dyno's are close to a must working on engines unless you want to race around the harbor or put it in a test tank every time you need to put a load on it.
I ran close to a one-man-show and ran all engines above 45HP on it, similar to the one on the pic below, could not live without it!! Bought it directly from the US late 80's so they have been around quite some time.
dyno.JPG

I was even distributor in Norway for them for several years.(K&O)
That type is just an hydraulic pump which you put on the propshaft and may read out the engine torque. Added with a muffler, you even got correct back pressure.
There are today more modern versions with corrosion sensors and water brakes that may be hooked up to a comp that gives HP rating directly.
 

jpcjpc88

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Re: 1989 Evinrude 150 having problems

Dyno's are close to a must working on engines unless you want to race around the harbor or put it in a test tank every time you need to put a load on it.
I ran close to a one-man-show and ran all engines above 45HP on it, similar to the one on the pic below, could not live without it!! Bought it directly from the US late 80's so they have been around quite some time.
dyno.JPG

I was even distributor in Norway for them for several years.(K&O)
That type is just an hydraulic pump which you put on the propshaft and may read out the engine torque. Added with a muffler, you even got correct back pressure.
There are today more modern versions with corrosion sensors and water brakes that may be hooked up to a comp that gives HP rating directly.
I am not sure if they have that..most mechanics in my area i think just have tanks. All i can do is pray that this guy and his mechanics know what they are doing 27 years seems like a solid amount of time in the business. If they werent any good i dont see how they would last that long. They charge 100 an hour for labor is that a fair charge?
 

Haffiman

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Re: 1989 Evinrude 150 having problems

I'm not going to comment on labor prices, but in general I see no reason why a marine workshop does not keep itself updated on equipment.
We all have different ways on doing things, just have to respect or at least accept it.
 

jpcjpc88

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Re: 1989 Evinrude 150 having problems

I'm not going to comment on labor prices, but in general I see no reason why a marine workshop does not keep itself updated on equipment.
We all have different ways on doing things, just have to respect or at least accept it.
I called them and asked how they load test and they said they have a boat ramp that they use to do load testing.
 

Haffiman

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Re: 1989 Evinrude 150 having problems

That may work provided they have and USE the correct test propellers that only loads the engines but does not push the whole rig! ( Same as normally used in test tanks)
 

KDAVID1

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Re: 1989 Evinrude 150 having problems

Thanks hopefully it isnt a serious problem. I have to wait a week till mechanic can start working on it. Its unbelieveable how backed up the boat mechanics in my area are...most would even look at it for 14 days.

I know how you feel. As well me and my dad went through this type of thing in the early eighties with a 70's model Quachita bass boat
with a 75hp Johnson motor (that was run in saltwater) Thing would never start and when it did would only run for a bit. We went through everything--coils, carbs, electrical, you name it and it came down to the main fuel line and bulb--although this is not what you are dealing with it can be a pain. Since then my dad is alot smarter about all of that--I'm just learning. As you can see from all of the post's this site is the best place to come to for help and knowledge. You should be fixed up in no time.
 
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jpcjpc88

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Re: 1989 Evinrude 150 having problems

I know how you feel. As well me and my dad went through this type of thing in the early eighties with a 70's model Quachita bass boat
with a 75hp Johnson motor (that was run in saltwater) Thing would never start and when it did would only run for a bit. We went through everything--coils, carbs, electrical, you name it and it came down to the main fuel line and bulb--although this is not what you are dealing with it can be a pain. Since then my dad is alot smarter about all of that--I'm just learning. As you can see from all of the post's this site is the best place to come to for help and knowledge. You should be fixed up in no time.
Thank you..very kind words great to see theres still good people out there.
 

Haffiman

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Re: 1989 Evinrude 150 having problems

Even if I might sound critical from time to time, let me even defend the industry.
It is in many places highly seasonal, roughly around 6 months.
Too many people wait until spring before they think about fixing some 'minor' problems from last year. Winterizing is not just to cover the boat from being filled with snow, but to be sure everything works when needed following spring. Change gearoil, check impellers, check plugs for even burn and balance, stabilize fuel, decarb and fog down, lubricate steering and cables, +++.
Then we have the product range. These outboards hardly dies! A dealer has to work with everything from late 50's with all manual and mechanical to the latest high-tech computerized systems. Training a 'grease monkey' from the latest 60's to handle the latest technology is not easy, not to forget the other way around. Give a newly educated mech trained on computer systems an old 60-80's engine and he is lost!!
Then we have labor and environmental laws throwing in the spanners. Exhaust, water, flywheels spinning at 6000 rpm 1" from your nose...???? By right they should be working in full protection suits with oxygen tanks at their backs!!
Add to it all those 'do-it-yourself' that keeps on disturbing and just need 'one minute'. What these people in fact are doing is stealing from those paying for the job the mech is working on at the moment!
To get much above 60% efficient invoiced time from a mech during a normal working day in the middle of the season is not easy, and will reflect on the price/hour invoiced. In winter time with no customers around it easily jumps up to 80+%, provided you have work for them!
Life is not always that easy as a boat mech, but may be quite interesting for those who are not afraid of challenges.
 

jpcjpc88

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Re: 1989 Evinrude 150 having problems

Took boat in today let everyone know what problem was. The mechanic is going to check and adjust everything before carb rebuild so carb rebuild may not be necessary.
 

akorcovelos

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Re: 1989 Evinrude 150 having problems

You've been told that you only have spark on 3 of 6 cyls. That could be your running problem. Knowing that the ignition is a problem, is there a reason why you are rebuilding the carbs instead? I'd address the ignition problem first and then test run the engine in the lake. The compression on the engine is low, based on your current readings. I'd double check them with another gauge, making sure the plugs are all out of the engine during the test and that the starter is at normal cranking speed (with a strong battery.) If you have not done so, I'd decarb the engine and see if the compression readings come up any. That engine does have low compression heads, if it is a basic 150 model. The 150S models run somewhat higher compression. Post your model number off the serial plate.

Sorry to thread jack, but your pm box is full...

you mentioned an ?S? model of the '89 150 Johnny that has higher compression. Can you give me any info on this or maybe a link? I have an '89 150 and always thought it was way faster than it should be, pushes my 20' glastron searider to 48mph with just a Ballistic prop. Where is the serial number and what designates the S model? What specs are different om the S?

Thanks!

Tony
 

jpcjpc88

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Re: 1989 Evinrude 150 having problems

Sorry to thread jack, but your pm box is full...

you mentioned an ?S? model of the '89 150 Johnny that has higher compression. Can you give me any info on this or maybe a link? I have an '89 150 and always thought it was way faster than it should be, pushes my 20' glastron searider to 48mph with just a Ballistic prop. Where is the serial number and what designates the S model? What specs are different om the S?

Thanks!

Tony
Start your own thread please.
 

akorcovelos

Petty Officer 1st Class
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Re: 1989 Evinrude 150 having problems

Start your own thread please.

No problem. Since you never posted your serial number to ID your engine model like you were asked too I figured it may apply to you as well.
 

jpcjpc88

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Re: 1989 Evinrude 150 having problems

Ok the carbs were rebuilt and fuel lines replaced. Everything worked greatt. Took boat out 5-6 times and always started right up. Today was big problem though. I got up early to head out for some fishing grabbed a little gas and i did proper oil fuel mix 50:1 as always. Started right up fine at boat launch and went heading down intercoastal and saw some mullet jumping so started tryin for some bait. Engine was in idle not in gear and all off a sudden she just conked out on me. Went to start and nothing. had to get towed back to ramp. I have no idea why the engine would just shut off and not start up again. It cranks but seems like its not firing. I tried everything to get it started it wont turn over. So now I have to wait till Monday to call mechanic unless I can figure the problem.
 

mercman2

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Aug 10, 2011
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Re: 1989 Evinrude 150 having problems

I'm having the same issue with the '89 150 I am working with. I have just rebuilt the carbs. I wouldn't reccomend this if you didn't have to do. It's a bear to get the plastic bowls to reseal. Unfortunatelly mine is ignition and I am down 3 cylinders. 2 on one side and 1 on the other. I also replaced the stator because it was ooozing black plastic all over the top of the engine. I am going to inspect the shift switch for a sticky condition. As posted by Mr. Clanton. What else could it be? Powerpack, Regulator/Rectifier, or timer base? Any help I could get would be greatly appreciated.
 

mercman2

Seaman
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Aug 10, 2011
Messages
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Re: 1989 Evinrude 150 having problems

Try the deadman switch. Unhook your lanyard and operate the switch a couple of times. These switches seem to corrode with lack of use.
 
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