Evinrude 130 Hp throttle and oil problems

[Bdoyle0075]

Hello all. I am having a few small problems. I have an Evinrude 130 Hp. Problem one is: when at full throttle the motor dies down, bring it back to 2/3 throttle and it picks back up. I have changed all the fuel lines put a new water separator on and rebuilt the carburetors. I have noticed that the primer ball goes slack when this happens and once I pump it tight it stays at full throttle.
Second Problem is the motor smokes a lot and I mean a lot. I have notice a black sludge coming from the propeller and thought it might have been the lower unit leaking, but after checking it, it was still full. So I can only assume it is excess oil, making me guess that the VRO is miss feeding. Could there be an air leak in the oil line making it feed too much oil and could that be the full throttle problem?

Thank you any help would be appreciated.

Brian

 

[yoster]

Re: Evinrude 130 Hp throttle and oil problems

Sounds to me like you have a leak in a fuel line somewhere, not the oil line. Leak in fuel line results in the Oil to gas mixture hitting the cylinders to be oil-heavy; would also explain why it's cutting out full throttle.

Note: It's normal for the primer ball to not be hard after the engine is started.

 

[Bdoyle0075]

Re: Evinrude 130 Hp throttle and oil problems

All fuel lines have been checked and double checked. They are brand new. I see no fuel leaks on any fuel line or at any connection.

 

[Bdoyle0075]

Re: Evinrude 130 Hp throttle and oil problems

Ok I have once again checked all the hoses and fittings. I pumped out all the ethenal fuel and replaced it with ethenal free fuel. Now I have noticed one of the four carbs is leaking fuel from a small hole between the bowl and the butterfly/choke. Could this be the top end problem.
It seems to me it is straving for fuel because while running full throttle I pump the ball and it picks up and goes until i stop pumping the ball.

 

[ezeke]

Re: Evinrude 130 Hp throttle and oil problems

Your problem is most likely a restriction on the gasoline line, which causes the pump to over-oil.

You may want to consider removing the now redundant in-line filter since one full-sized water separating filter is more than adequate.

You might also want to peform a vacuum test on your gasoline line.

Have you tested your anti-siphon valve?

You don't have chokes on a 130.

You do need to stop the leak on the carburetor.

 

[Bdoyle0075]

Re: Evinrude 130 Hp throttle and oil problems

Well I tried a can of Power Tune through the motor and seemed to of help a little. Still won't get all the way on top end but it is better. I can still pump the ball and it will take right off. Any suggests?

 

[Bdoyle0075]

Re: Evinrude 130 Hp throttle and oil problems

ok dumb question. I have just noticed that the primer ball is before the water separater, first is this right or does it go after? A buddy of mine has his after. This could not cause the problem or could it?

 

[Bdoyle0075]

Re: Evinrude 130 Hp throttle and oil problems

Well far as my primer ball question no answer here but I found the following link, it has a lot of good info on it. Hope it helps someone else also.

http://continuouswave.com/whaler/reference/primer.html

 

[64osby]

Re: Evinrude 130 Hp throttle and oil problems

I had a friend that replaced his fuel lines and had top end issues. He went back and replaced the 1/4" lines he installed with 3/8" lines. No more top end issues.

My .02

 

[Bdoyle0075]

Re: Evinrude 130 Hp throttle and oil problems

Thanks, I have 3/8 fuel line on both tanks. Going to replace the old black line today. It is as old as the boat 1980's. I am going to check the pick up in the old tank and again make sure there is no air problems. I am going to replace the ball again also and move it to the downstream side of the filter. Will repost after a test ride. Any other help would be greatful.

 

[Bdoyle0075]

Re: Evinrude 130 Hp throttle and oil problems

Well I fixed the fuel leak in the carb. by rebuilding them. All new fuel lines, new primer ball, and still it will not get on top end. Would the pump bad or not strong enough to pull what is needed for top end? Even using non- ethenal fuel.

 

[rndn]

Re: Evinrude 130 Hp throttle and oil problems

I don't remember reading that you had rebuilt/replaced the fuel pump. How old is it?

 

[noelm]

Re: Evinrude 130 Hp throttle and oil problems

OK, lets go back to the basics, you say the primer bulb goes flat/soft, that indicates a restriction between the bulb and the tank, so either the tank vent is blocked, the pickup is blocked or the fuel line is kinked somehow, those things will cause it to starve at full RPM, another tack (after you fully explore and eliminate those options) when you pump the primer, you say it runs OK, so that maybe a weak fuel pump, as pumping the bulb in effect bypasses the fuel pump, but seeing as you bulb goes flat, I doubt that is your problem, do not keep pulling things to bits without proper simple trouble shooting, you may introduce another problem to fix.

 

[R1racer]

Re: Evinrude 130 Hp throttle and oil problems

I would hock up an external 6 Gal to the Eng , One of 2 things could happen 1st it will tell you if you got fuel supply issue coming from the main tank if trouble goes away , or the 2nd one which the Fuel pump not doing it to deliver under high RPMS .

Once I had 130HP 1997 Evinrude with VRO that acted the same but she was shutting off unless I keep supply fuel with primer ball ?it turn out bad VRO fuel side...

If the above didn?t help try the 3rd option rebuild the carb unless you all ready did

 

[Bdoyle0075]

Re: Evinrude 130 Hp throttle and oil problems

No rndn I have not replaced or rebuilt the fuel pump, was trying everything else before I went to the cost of replacing the vro.

Noelm, I will recheck the fuel lines for restrictions and double check the vents and pick up. Thanks for the advice. I do not want to have to replace or fix something else.

R1racer, thanks I will see if I can't use someone else's tank and give her a try.

Thank you for all your help

 

[Bdoyle0075]

Re: Evinrude 130 Hp throttle and oil problems

Well after all that and still no results, I know see a leak coming from around the bottom throttle body past the throttle return spring. Could this be the Carb. gasket?
Can not see exactly where the leak is coming from but that is where the drip is coming from.

 

[nymack66]

Re: Evinrude 130 Hp throttle and oil problems

What year is this motor? You may need to do a oil test on the VRO it could be faulty. Its in your manual how to do this test.
Check your carbs if they are warp hence your leaking ...

 

[Bdoyle0075]

Re: Evinrude 130 Hp throttle and oil problems

Thanks nymack66, it is a 95 130 hp. I have read something about the oil test you are talking about in my manual. That leak though just started when i was testing it out the other day. I will give them a once over. The leak looks like it is coming from the back of the throttle body though. Thanks again

 

[nymack66]

Re: Evinrude 130 Hp throttle and oil problems

Found it here you go with detail instructions. Be sure to read both hopefully this helps..
http://www.tenkillermarine.com/boatparts/vro.asp
http://www.tenkillermarine.com/boatparts/vrotable.asp