new boat please help

[garychenoweth]

Re: new boat please help

i am only seeing one power pack it is located on the back of the moter dead center

 

[garychenoweth]

Re: new boat please help

also so looking at the motor top left is 1- top right is 2 low left is 3 and low right is 4? and it shoul fire in that order?

 

[ezeke]

Re: new boat please help

Try it this way; look at the engine from the rear and you will see that the cylinders on the right are higher than the ones on the left. The top right cylinder is number one. The next highest is number 2 which is on the left. The next highest, #3 is on the right, and the lowest, #4 is on the left.

"There are two powerpacks. The port [left from rear] pack services 2 and 4, The starboard pack services 1 and 3."

 

[garychenoweth]

Re: new boat please help

ok i must be dumb but i am not seeing anything other than a box about 5-inches long and 2 -1/2 inches wide toward the top on the back center of the engine..what do the packs look like?

 

[tschamp20]

Re: new boat please help

does it look like this?

 

[ezeke]

Re: new boat please help

If what you see looks like that picture, your motor is not a 1979 and all bets are off.

 

[ezeke]

Re: new boat please help

ttt

 

[garychenoweth]

Re: new boat please help

yep looks like that. hmmmm my title says 79 evinrude 85hp? so now what?

 

[ezeke]

Re: new boat please help

OK, it is 1973- 1977. look on the top of the left cylinder bank for a quarter-sized convex seal that looks like a freeze plug. It will have numbers on it that we will need. Look on the transom bracket on the port

side, for a 1" X 3" plate with model and serial numbers on it.​

 

[iwombat]

Re: new boat please help

It just might also say in big bold friendly letters on top of the carb airbox.

Mine says "77 85hp Timing 26*" In 1" high font. (Or whatever the timing actually is - I'm not looking at it now).

 

[garychenoweth]

Re: new boat please help

does model number #85793s sound right? that is what i can find on the engine. oh and by the way thank you so much for all your help. i really just want to learn and get this working right.

 

[ezeke]

Re: new boat please help

Yes, that is the 1977 85HP model. I think iwombat's been working on the same model, so maybe I will step out for a while.

BTW, now that you know the model number, go to the BRP parts catalog site and print out the diagrams and parts lists for your motor - It will hellp with the work that you are doing.
http://epc.brp.com/default.aspx?brands=ej&lang=e

 

[tschamp20]

Re: new boat please help

1977 85hp heres all the parts!
http://www.ishopmarine.com/ishop/js...&isForSupStore=false&cCatFilter=&eCatSupFldr=

 

[garychenoweth]

Re: new boat please help

thank you!!!!!! so went again today fires on all four but when hit wot it starts to pick up more for about a second then backs down a little???? could inproper tilt have an effect??

 

[tschamp20]

Re: new boat please help

what do the coils look like? are they all cracked up?take a timing light w/ you next time and alternate which plug wire you clamp to and see if any are losing spark while at wot

 

[Gary H NC]

Re: new boat please help

Classic fuel delivery problem.Take the advice of these guys.They know what they are doing.Get carbs rebuilt and fuel system checked.., Or at least hook up a small fuel tank with fresh fuel and about 4 cans of seafoam!

 

[garychenoweth]

Re: new boat please help

would 4 cans make a difference? look i know i am a dumb *** when it comes to boats, would improper motor tilt effect this?

 

[Gary H NC]

Re: new boat please help

the motor tilt would not make that big of a difference. have you tried running a remote fuel tank? I assume the boat has a built in tank,correct? The Seafoam will help clean the carbs if they are not completely plugged up.Its a last chance thing to try before carb rebuilds..
Nobody thinks your dumb! we all had to start learning somewhere

 

[garychenoweth]

Re: new boat please help

ok i will try seafoam but how much? should i just over do it? like 3-cans for lets say 6 gallons? i know one can should treat 20 gallons but the more the better?

 

[ezeke]

Re: new boat please help

One can in the 20 gallon fuel tank is a maintenance load. You want to do a real decarb and clean the carbon out of the combustion chambers, rings, exhaust etc., so you have to get it much more concentrated.

Go over to the Engine FAQ Forum and look for the decarb thread. You will find mention of Capt. Bob Dunkelberger and his method of decarbing with Seafoam. That is a really good way to do it.

http://forums.iboats.com/showthread.php?t=158076