Rusty

[JR19]

Is the power disturbution panel the same thing as what people refer to as a power pack. The reason I am asking is because my motor has developed some problems and my power disturbution panel was replaced about 10 months ago for a trim problem.

My current problem is I have developed a small miss that only occurs at 41-4300 rpm. Starts and purs like a kitten and runs like a scalded dog at wot but most of my time is crusing at 4200 rpm. Last July when my pdp was relpaced I also had the fuel filter and spark plugs changed. They were not related to my trim problem but I just had some regular maintance done while I had it in the shop. At the time I asked my mechanic how the filter and plugs looked and he said they were fine.

100% of my gas is bought at BP station they sell alot of gas so I dont think water in the gas is a problem. Boat is stored inside a garage uncovered and I always prop open the bilige lid so i dont think condensation is the problem. I pulled the plugs today and they all had what I would describe as a black looking but clean burn on them. Plugs have 50 hours on them and are 10 months old so I am going to change them even if they dont need it.

The miss is only a slight miss and only seems to occur after making a long run. If the plugs and gas are ok what do you suggest I look at next. I was thinking power pack. Is there a way to check it out and is the power pack and pdp the same thing.

99 Evinrude 150 Ficht
Engine family xipxmo158220
Model E150fpleea
Serial no G 04673072 Run a check if you have time should have been purchased by Kevin Bow Feb of 99 with no claims
Champion xc12pepb index in towars the injectors and I think the toqure spec was 12-16 pounds

Your input would be greatly appericated
JR19 Gene

Sorry for such a long post

[RUSTY63]

The PDP (power distribution panel) is just that, it distributes power to other components on the motor, it is not a power pack and your motor does not have a power pack.

As for the miss at 41-4300, you may want to check the air gap on the crank sensor, If I remember right its 0.050, Make sure you have one of the cast in bars on the flywheel pointed at the sensor, one other thing if you have a spare prop of a different size you may want to try it, a smaller or larger prop will sometimes move the miss to a different RPM.

[JR19]

I know it has been three weeks since I asked about this problem but due to circumstances I have not had time to work on it much. Here is what i have done.

Changed plugs. Still misses every now and the only at 4200rpm just like it was with the old plugs.

I sent my prop off and got it checked out. One blade was out of balanced and prop man worked on it to get everything back in shape. Just picked up the prop today so I have not had it out.

I did find some thing out of place today. I pulled the hood on my motor today and noticed the air box was out of place. It had slipped out of the throats and fell down some. I also noticed what appears to be a sensor that appears to belong in the starboard side of the air box. The sensor was not aligned with the hole in the air box so I put the sensor back in place and raised up the air box and pushed it back into place. I made sure everythig was lined up and that the straps were in place. I have not got to take it out since finding this problem or getting my prop back.

I sure hope I found the problem because it is a funny miss that only happens at 4200rpm and only happens ever once and awhile. I guess if this does not cure the problem I will just run it until the miss is constant .

JR19

[RUSTY63]

The air box wont cause this problem, did you check the crank sensor air gap?

[JR19]

Not yet I am going to have to locate a feeler guage first. I think I can borrow one from a friend who used to do alot of mechanic work.

JR19

[JR19]

Rusty

I checked the air gap on the crank case sensor and it was at .050 I have had the boat on the water abuot 5-6 times since I first noticed the miss a month ago. It used to only happen on long runs but now it will miss even on a short run. I have also noticed if you are running 5300 and let off the gas the motor will have a small miss when it gets back down to 4200 and then as soon as it gets below 4100 it will not happen . This is a very strange miss it will only happen at 4100-4300 and that is my normal crusing rpm. Motor starts idles and purrs like a kitten at all other rpms. Is there something else I can check.

JR19

[RUSTY63]

Can you borrow a larger or smaller prop?

[JR19]

As of right now I dont know of any body that has a prop to borrow. It may take me a little while but I am sure I can locate one. I am currently turning a 24 Raker and it seems as if everone I know who runs Evinrude or Johnson is turning the same thing. I do know where a four blade( 23 or 25 I cant remember the size) Renegade is for sale that I might could "try" but I dont think he has the thrust washer and my Raker washer is different. It may take me some time to locate a different prop but I will see what I can do.

JR19

[RUSTY63]

If you could use the 25 Renegade (it uses a different washer) you might find that the problem goes away, kinda, it will still be there but it will have moved to a different RPM and you may never find it again.

[JR19]

It will still be there but would have moved to a different rpm

I understand that a different size pitch will change the rpm load range of my motor but I was wanting to get rid of this miss not just hide it at another rpm.

My Evinrude is my baby and she gets nothing but tender love and care. This miss is about to drive me crazy I want to eleminate it that way I can sleep better at night, because right now every time I unload the boat I have a question in the back of my mine ( will she get me there and back)and I dont like that feeling.

As for the props I have two friends that run 24 Raker so that is no help but I also have a couple of friends that are turning 25 Yamaha one is on a 150 and the other is on a 200. My neighbor has a 115 Yamaha I dont know what size pitch it is but would any of those Yamaha prop interchange with mine?

JR19

[RUSTY63]

This is not to hide it, some DI motors if you run them at Exactly the right RPM you may find a miss, this is caused by the motor going back and forth between Stratified and Homogeneous mode, this is a technical term used to describe what the ignition system is doing at a given RPM.

What I want you to do by changing props is to see if the miss goes away, if it does, then there is no problem with your motor and the miss at that RPM has been explained, Make since?

[JR19]

Now I understand why you want me to try a different prop.

Bare with me I know it may seem as if I have alot of questions but I bought this boat with only 60 hours on it and I have put over 250 hours on it in the last 4 years. This motor has never gave me a minutes trouble. I do very regular maintaince and give her not but tender love and care.

The mechanic I have used for the last several years has retired. He was a certified Evinrude mechanic and had a very good reputation. People would travel for miles just to get him to work on thier motor.

I did call him and talk to him about the problem and he told me that the injectors would change modes just like you explained. He said the miss would not go away if it was in the injectors.

It may take me awhile to locate a different prop i will post the results if I can locate a prop.

Thank you for all the help you have given me so far it is greatly appericated JR19

[JR19]

Clarification

I said injectors but meant ingintion system.

JR19

[RUSTY63]

Glad to help.