Well, I did it!! I made the change!!

[mrcool]

After talking to a marine machanic, we decided to remove the VRO pump on my 84' Evinrude 90 horse, we did not use the old pump or disconnect the wiring and plug the oil hose. We put on a new fuel pump only (not a VRO pump) He talking me into it after telling me the old VRO pump, altho working just fine, was a burnt up powerhead waiting to happen, especially after finding out the alarm was not working We are finding the engine runs fine on the muffs, but seems to run a little rougher and then dies when put in gear while in the tank or in the water (more back pressure when in the water???) do you think the carbs need a rebuild? I does seem to run a bit better after a good warm up period.

 

[kenmyfam]

Re: Well, I did it!! I made the change!!

Good idea to replace the pump. I did the same thing although it was the fuel side that was failing on mine. Regarding it running rough, how was it before the new fuel pump ?? is this something new or was it a little rough before the change ??

 

[tashasdaddy]

Re: Well, I did it!! I made the change!!

what fuel pump did you use? anytime you break open the fuel system, you risk getting flakes of the hoses interior in to the carbs. being an 1984, it is due to replace all fuel lines anyway. replace everything for tank to carb with alcohol resistant fuel lines, (ethanol).

 

[mrcool]

Re: Well, I did it!! I made the change!!

Good idea to replace the pump. I did the same thing although it was the fuel side that was failing on mine. Regarding it running rough, how was it before the new fuel pump ?? is this something new or was it a little rough before the change ??

It is running about the same as it was last season, I've only had it since Aug. and It would die every time I put it in gear last year also, I would rev the engine then drop it into gear, then throttle it up ASAP. Once it's warmed up it would run fine, but it took a while. We are changing all fuel lines. do you think the card rebuilds would fix the idling/dieing when put into gear(in the water only) problem??

 

[tashasdaddy]

Re: Well, I did it!! I made the change!!

that would not hurt, but setting your idle speed would be a must, you can get idle close on muffs, about 200 rpms faster than it should be, then you have to do final idle adjustments in the water with the motor in gear, you want is as slow as you can get it, with out it stalling. some idle at 600 rpms, some 750 rpms, in the water and in gear, it will idle faster in neutral.

 

[kenmyfam]

Re: Well, I did it!! I made the change!!

As said a carb job will not do any harm whatsoever.