Recirc valves

[Stevebandl]

Hello Quick question. I've been troubleshooting some performance issues with my 1989 Evinrude E150STLCEM. Having intermittent issues with it bogging down on take off. I've replaced all of the fuel line from the tank to the motor, checked the fuel tank pick ups, primer solenoid, etc. I've been informed that it's possible some of the recirc. check valves are clogged. I've never messed with those. in fact I'm just finding out what they are. I'm fairly new to this. Anyway, is it necessary to remove the carbs to remove and check/clean the recirc. valves?

Thanks

 

[racerone]

What other trouble shooting have you done ?-------Compression test is the first thing and post your numbers.------And next is an " ignition maximum output test "----So does spark jump a gap of 3/8" or more on all leads , yes or no ?

 

[Stevebandl]

As I said, I'm fairly new at working on outboards. I started out having intermittent no spark issues. After replacing the power pack, stator and timer I now have spark on all cylinders. I don't know how to check the gap of the spark. I just used one of those lighted spark testers to verify that I had spark on all. After all of that, my compressions were low 90's on all cylinders which I was told is about normal for the old 150hp crossflows. The "bogging down" is intermittent and seem to get better the more it runs. The issue is that when I take off some times it takes a while to get up on plane then once it gets up after a few seconds it's like you flip a switch and it takes off an runs great and will run great until maybe the next time I try to take off after fishing a while. I read on another forum that clogged recirc. valves could be the problem. I thought I would at least check them but didn't know what all would be involved.

 

[racerone]

I would say if it picks up power like you " flipped a switch " it is a spark issue.-----Run with a timing light hooked up to # 1 cylinder and see how spark behaves.----Repeat the test with the other 5 cylinders.----Test compression with another gauge ?-----Test run with the cowling off the motor ??

 

[Stevebandl]

Will do. Thanks

 

[daselbee]

As usual, I do not agree with Racer's analysis. I think you have dirty and clogged calibration pockets in the throttle bodies. I have a long drawn out reasoning for this, too much to type here. OP, pm me and we can talk on the phone regarding this.
It is most definitely not the recirc valves.

 

[cfauvel]

I don't think recirc valves are your issue.

BUT

if you want to do some reading, here is what I found when working on the recirc valves
https://forums.iboats.com/forum/eng...rc-valves-and-system-for-evinrude-225-hp-1986

 

[racerone]

I suggest that folks need to do some simple testing.------Where would you find the " throttle bodies " on the motor in question ?-------I could always suggest a new " powerpack " as that fixes almost all issues.

 

[flyingscott]

Don't the crossflow motors have Metal carbs? I thought the 60 deg loopers had the calibration pockets. Does that motor have a shift switch that could be getting sticky.

 

[racerone]

YUPP-----This is a " crossflow motor " thus my question in post # 8 here.

 

[daselbee]

Correction noted. Sorry for the post.

 

[Mikey N.C.]

Racer is right about power pack( cdi box) I had a j90tlcc 1988 come in shop Tues. customer had wot issue. First he had a AGM battery a no,no. Compression test 1st, 130,135,125,130.
dva test stator br/br,yellow. Then disconnect 2 yellow wires to rectifier. If no change . dva small orange wire still hooked up to coil packs. U should have 150 volts or more. If not it's power pack. You can quickly ohm test primary an secondary resistance on coil packs. This motor was sending 120 volts on orange to coil pack #1 cylinder cdi 113-3101 box fixed it.

 

[Mikey N.C.]

Oh and by the way I have cheater switches to eliminate boat side harness.

 

[Mikey N.C.]

That cdi power pack 113-3101 only works for '88 and older. '89 and up takes two different packs.

 

[Mikey N.C.]

Is motor sneezing and leaking exhaust fluid down leg ?

 

[Stevebandl]

Thanks for all of your responses. You guys obviously know your stuff. I did the timing light test as Racer suggested in post 4. I had what I would say was good consistent spark on all cylinders. Haven't had a chance to do anything else. I have already replaced the power pack with a new one. Also replaced the timer and stator. This was all done after I had a guy install a rebuilt block because of water intrusion. But then he just reinstalled all of my old parts and I still had performance issues when I got it back. Found some exposed wiring on the old stator which was likely causing most of the problem.
The reason I question that it has anything to do with spark is that if I make a run then shut it down, then take right back off it jumps right up on plane and runs great. It's when I stop to fish for a while, it will start right up but is sometime very sluggish on take off but after it does get up it's like I posted earlier, it's like you just flip a switch and it takes off. Hard to explain in a post.
No the motor is not sneezing, backfiring or leaking anything down the leg.

 

[flyingscott]

Look at the timer base make sure it moves smoothly as you accelerate the throttle. If it does.not move smoothly that could be your problem. Does that motor have a shift interrupt switch? I do not remember if that model does or not.

 

[Stevebandl]

I believe that came up in a previous post and I was told my motor didn't have one. 89 E150STLCEM
If it did, where would it be located?

 

[racerone]

No shift interrupt switch shown in the parts book.-----Was a new impeller installed ?-------Running with VRO in service ?---50:1 mix ?----Did the " rebuilt " block come new pistons , yes , no or not sure ?

 

[Stevebandl]

No VRO and I have changed the fuel pump which didn't help. Yes I mix 50:1, Impeller wasn't changed. Two new pistons. One damaged form the water intrusion and the other had some minor scarring.
Someone posted that it's definitely not the recirc. valves. Just for my information, what kind of issues would occur if they were clogged?