Help me set timing on 1989 150hp evinrude

[Mike82]

I just replaced the timer base in this engine which i now have spark on all 6 cylinders again. I purchased a brand new CDI timer base and on the timer itself it says the timing needs to be done after installing this part. So what I can gather is as soon as the top carburator starts to move at all as you advanced the throttle your timing should be set to 7 degrees at that point, is this accurate?

If it is the problem that I am having is the center carb that the Cam Roller is on always advanced first by just a little. But the motor revs up a little even with only the center carbs cracked open so by the time i get the top to crack open it reved pretty high to were I set 7degress. Any ideas this is my first time doing this.

 

[Monte1961]

Re: Help me set timing on 1989 150hp evinrude

Top secret files at the beginning of this forum. Joe Reeve's timing procedure. I understand that it works pretty good if done correctly. Post back results.

 

[Mike82]

Re: Help me set timing on 1989 150hp evinrude

I checked the top secret files for setting the WOT timing which will be very helpful considering I was not to sure how I was going to set that. I guess i still have the question of the link and sync timing the manual is calling for. I am just wondering if the 7 degrees it calls for is what its suppose to be at as soon as the carb linkage moves?

Also what would be a good degree to set the idle at is there specific one or is that all just done off RPMS?

 

[Mike82]

Re: Help me set timing on 1989 150hp evinrude

I know someone has set timing on a evirude outboard before all i really need to know is idle timing and link and sync.

 

[Monte1961]

Re: Help me set timing on 1989 150hp evinrude

I recommend you do the joe reeve's method first, then link and sync. post back

 

[denlou]

Re: Help me set timing on 1989 150hp evinrude

My 1986 Johnson 150 calls for 7 deg. timing at idle.
The link and sync procedure will be covered in your manual and should be done before you set the idle timing.

If your center carb is opening before the others they're not in sync.

 

[Monte1961]

Re: Help me set timing on 1989 150hp evinrude

denlou is right. Turn plate should move before carb/s start to open therefor advancing timing a bit then the carb/s when throttle cam hits index marks
on turn plate. Not before and not after. Do what was suggested and then link & sync. If you should have a problem, chime in and we will assist you the best way we can. Good luck and post back results.

 

[Mike82]

Re: Help me set timing on 1989 150hp evinrude

I just did joe reeve's method for the WOT timing and it was almost right on it ws 23degrees and should of been 24degrees. As of right now my timing at idle is 7 degrees i need it that high or else it kills when its in the water. I took it out again tonight and tried it which it did the same thing. Starts idles fine goes into gear fine but when I throttle down to plane the boat its like all i have is half power. It sounds fine just dosent ramp up. I tried in reverse tonight and it has full power in reverse it seems like revs right up. Any thoughts on this? I figure even if the link and sync is off at WOT timing is right and carbs are wide open and thats all that shouls matter. Is there anything that would be governing the motor?

 

[Monte1961]

Re: Help me set timing on 1989 150hp evinrude

Have you checked to make sure carb/s are all the way open at full throttle? I can't see why in less cable is to far stretched and not allowing it rev all the way up. Does your model have a rev limiter on it? just a thought. Post back.

 

[emdsapmgr]

Re: Help me set timing on 1989 150hp evinrude

Each boat needs to be setup separately at idle. All are different, with engines being mounted higher or lower in the water depending on stern hull displacements. Don't worry about the specific timing degrees at idle. It's important that the idle be set between 650 and 750 rpm when floating in the lake and IN GEAR. When you have that set right you are where you need to be.

 

[Mike82]

Re: Help me set timing on 1989 150hp evinrude

I have checked the carbs to see if they are all the way open which they are very close they could go a little more except the main lever that advances them in bottoming out on the motor. Im not sure how crusial that is they could maybe go another 1/8in to be wide open. As far as the idle timing i set that on the water yesterday my motor is mounted low and the exhaust is under water so it needs to idle a little faster so it dont die. I dont have a tach at the moment though so im not sure where it is ideling at. One thing I forgot to add is I have a small vaccum leak on the bottom side of the starboard side. It has been there for the last 3 years though and has never been a problem yet.

 

[emdsapmgr]

Re: Help me set timing on 1989 150hp evinrude

The carb butterflys should open fully to the extent that they are level. They will overrotate, which can be a problem. If they overrotate, they effectively reduce the full throttle somewhat. Make sure they are flat, level. Any air leak on an engine is not good. That can result in a lean condition. Best to have a look at it.

 

[Mike82]

Re: Help me set timing on 1989 150hp evinrude

I went and pulled the plugs one by one tonight, the bottom plugs on both sides did not have a effect on the motor that i could tell. Yet when I pulled them off I was getting at least a 1/2in spark if not more it even jumped over a inch to the plug base at one time. So I am not sure what to take from that, i just did a compression test and all 6 were 105 plus or minus 2lbs. I also sprayed carb cleaner on the air leak in the crank case to see if it would bog down or idle it up but it did neither. I just had a thought being that both bottom cylinders seem not to be firing but have enough spark they both share the same carb I wonder if the bottom carb is acting up maybe a stuck needle.

 

[Monte1961]

Re: Help me set timing on 1989 150hp evinrude

Hook the wires back up and start it again. Place your hand over the carb venturi and see if has vacuum? I have a question for you, What do the bottom plugs look like? Clean or wet or? Post back

 

[emdsapmgr]

Re: Help me set timing on 1989 150hp evinrude

Sounds like your spark is strong on all 6. Agree, that bottom carb is suspect. If there is any chance that the carb is not feeding fuel to the bottom cyls, I would be reluctant to run the engine. Possible it is not providing fuel (and lubricating oil) to those two bottom cyls. You have to have fuel/oil mixture to keep from scuffing the pistons and cyl walls when it is running.

 

[Mike82]

Re: Help me set timing on 1989 150hp evinrude

I will check the bottom carb for vaccum tonight when i get done with work. I think i might spray a little fogging oil in the bottom two cylinders just in case it is dry hopefully that will be enough to run a test to check for vaccum. Should i be able to see gas misting out the plug holes if i crank it over with the spark plug out of them? As far as the spark plug condition on the bottom two i just had them out the other day and cant remember what they looked like i will have to check again.

 

[Mike82]

Re: Help me set timing on 1989 150hp evinrude

Alright i checked the plugs first and found that the bottom 2 were very wet much wetter than the other 4. The middle plugs were very black and the top looked good. I then checked the vaccum in the bottom carb and did have sucktion not quite as much as the top 2 but i really had to pay attention to tell the difference. I then put new plugs in it because the ones i had were 3 years old and were all not gapped the same. I then ran it for a little bit and pulled the plugs again and found that it still didnt seem to make a differnce. I then shut it off and checked the plugs again this time it all looked good except the bottom one on the starboard side looked very wet again, by very wet i mean there is sitting gas on the plug that i can fling off. I dont get it i have compression, gas and spark on that cylinder. One thing i should add is the ball would not get hard today it usually does but it is about a 100 degress today and sunny. Also when it was running if it started to sound rough i would pump the ball and it would stop missing. Should the ball stay hard while the engine is running?

 

[Mike82]

Re: Help me set timing on 1989 150hp evinrude

Well I think i might have figured it out it just dawned on me that i put used aluminum carb bowls awhile back and it has not run good after that. So i pulled the carbs and drain plugs on the bowl and low and behold the bottom carb bowl was missing the high speed orifice was not even in there. I should of known better to pull the drain plug and see if it was there. So I think this explains why the bottom 2 were full of gas. Im not sure this will fix everything but I sure hope so getting tired of playing with this motor, lol.

 

[Mike82]

Re: Help me set timing on 1989 150hp evinrude

Well thats what it was i went through the carbs today and cleaned them out and put the right orfices back in. Then I took it out on the lake it ran better than it ever has better response and more power on the whole shot. It was a great sense of accomplishment when she fired right up idled good and best of all when I punched it ramped up perfect.