MeanMachine87
Cadet
- Joined
- Jun 23, 2014
- Messages
- 11
I have a 97 Pro-Line 251 WA w/ twin mercury 150 EFI. Starboard engine runs fantastic, port not so well and I've dumped some serious cash in this thing over the past 2 months and no one seems to be able to fix it.
Background - had new throttle cables put on the engine last year before I stored it. While they were being replaced shop noticed oil injection lines a little weathered. they cut off the bad and reinstalled. Unfortunately they flip the lines and it caused the oil valve to stick open and flood the cylinders with oil. Got that fixed and the motor ran well for about 6 fishing trips. All of a sudden coming back in the port engine started losing power and rpm's were up and down. Changed the plugs and tried it again the next morning - ran decent for the trip out and on the return trip same thing. Took it to the shop and they stated it was the power packs. Had both power packs replaced and now the engine is a dog. WOT on both engines the PORT caps out at 4000. Power is gone. Back to the shop it goes, replace an EFI pack $586 and a trigger switch $188. Still no power and I don't have a clue what to do next. The guy at the shop states he'll come out and go for a ride but I'm beyond frustrated at this point and really need some help.
Could the injectors be spent due to the oil? It seems as though I'm only running on 3 cylinders. One thing I did on my own was start it with the left side wires unplugged...fired right up. Switched and pulled off the right and tried with just the left - it wouldn't start. Could the power packs be bad? Should I try and put the other packs back on? Side note - compression was check in all cylinders and is good, can't be fuel because the kicker and other engine run off the same tank and I always treat the fuel. I did put in new batteries this year, not sure if that could cause an issue. New fuel filter on both engines this year. Thoughts?
Background - had new throttle cables put on the engine last year before I stored it. While they were being replaced shop noticed oil injection lines a little weathered. they cut off the bad and reinstalled. Unfortunately they flip the lines and it caused the oil valve to stick open and flood the cylinders with oil. Got that fixed and the motor ran well for about 6 fishing trips. All of a sudden coming back in the port engine started losing power and rpm's were up and down. Changed the plugs and tried it again the next morning - ran decent for the trip out and on the return trip same thing. Took it to the shop and they stated it was the power packs. Had both power packs replaced and now the engine is a dog. WOT on both engines the PORT caps out at 4000. Power is gone. Back to the shop it goes, replace an EFI pack $586 and a trigger switch $188. Still no power and I don't have a clue what to do next. The guy at the shop states he'll come out and go for a ride but I'm beyond frustrated at this point and really need some help.
Could the injectors be spent due to the oil? It seems as though I'm only running on 3 cylinders. One thing I did on my own was start it with the left side wires unplugged...fired right up. Switched and pulled off the right and tried with just the left - it wouldn't start. Could the power packs be bad? Should I try and put the other packs back on? Side note - compression was check in all cylinders and is good, can't be fuel because the kicker and other engine run off the same tank and I always treat the fuel. I did put in new batteries this year, not sure if that could cause an issue. New fuel filter on both engines this year. Thoughts?