1970 85 hp evinrude starflight

[flefler]

I have a question with my 1970 85 hp evinrude. I was out on the lake and it suddenly stopped. Now it will not start. It's turning over but will not run. I am new to boating and was trying to get an idea on how much this will cost to have fixed. I don't have a manual. I replaced the plugs and battery but still won't run. Any ideas I would appriciate it. Thanks.

 

[bankerjohn]

Re: 1970 85 hp evinrude starflight

It could be a multitude of things ... overheating, lack of fuel, lack of spark, etc. No way to even guess what it would cost without diagnosing the problem(s)!

I assume the boat and motor are new to you ... is this the first time you've run it?

 

[flefler]

Re: 1970 85 hp evinrude starflight

No I have ran it, a few times now. And it always ran good. That day it broke down I had it running for about 10 min then all of a sudden it stopped. I talked to a guy who works on evinrudes and he said its a waste of time to look at it because it is the power pack. Someone else told me it could be the coil?

 

[bankerjohn]

Re: 1970 85 hp evinrude starflight

I don't know how anyone, even an "Evinrude mechanic," could tell what the problem is without doing some tests. Did he do any tests?

 

[flefler]

Re: 1970 85 hp evinrude starflight

No this was over the phone conversation with him. I took the plugs back out. The plugs itself were not dirty but around it was pretty grimmy. I heard if motors get bad gas this happens. How would I get the gas out and how to get it started. How can you tell if a motor is blown?

 

[bankerjohn]

Re: 1970 85 hp evinrude starflight

How can you tell if a motor is blown?

Do a compression test on all cylinders ...