Specs to know. I'm at 5500ft above sea level. Tank went through 3 hours at 25:1 break in fuel for new rings. I topped off with 87 octane ethanol free pure unleaded gas.
Hi all, I'm new here. I purchased a 1994 Sunbird corsair 170 with an evinrude 115 e115TLERC. The previous owner JUST had the VRO deleted, new piston rings with 1 new piston installed, and carbs rebuilt. It was done in Kansas where I found it and then run for 3 hours on the lake to tune properly. The tank was cleaned out and refilled since it was sitting prior to this. Ran fine with muffs but as soon as I got it on the water it started acting terrible. First off it was hell to get started. And that's after they used 140 degree decontaminate water through it getting it all the way to operating temp there at the lake.
Symptoms:
At first, right after launch, it would stall out at idle so I screwed the idle speed to raise it some which helped. But any wave or wake and it would 9 times out of 10 Stumble and die. OR go from running perfect to sounding like it was thumping and misfiring.
Did 3 WOT runs and first 2 times the OMC lean fuel alarm (i think) went off. That's a guess, basically after 15-20 seconds at WOT the alarm would go off. On the final WOT run it literally just died. But started and idled right back up again. I disconnected the alarm and just kept it low trolling rpm rest of the time
The bulb went flat more than a few times.
And above all it was CONSISTENTLY INCONSISTENT. Going from running like butter and firing RIGHT back up after stopping, to not starting or having a very very hard time then the lopey misfire sound would kick in, then in the middle of that go back and forth from running perfect.
Finally after 2.5 hrs on the water with this thing doing this the whole time (MAYBE 1.5hrs actual run time) after literally 30 min of trolling just fine it died when I put it in neutral and wouldn't start back up at all for anything. I used the trolling motor to limp back to dock.
Conclusions:
1)I first thought carbs may need rebuild but after looking at the work order he gave me when I bought the boat it shows that it had been done along with float adjustment on one of the carbs.
2) I bought a new fuel filter thinking MAYBE the new one clogged fast even after the tank cleaning just from debris?
3) I brought it from Kansas which is at maybe 3k feet above sea level to Colorado springs where I use the boat at around 5500ft above sea. Re-Jet?
I purchased a water pump kit just to do for good measure. Will install before next run out.
But the take away was how inconsistent it was. From running and idling fine 1 second to an absolute horror show the next. Cranking non stop, manually pumping bulb, neutral 2/3 throttle starts etc. And wake from boats absolutely would affect it depending on the angle it would hit at it seems.
Please help, I want this to be safe for my family. Thanks ahead of time
Hi all, I'm new here. I purchased a 1994 Sunbird corsair 170 with an evinrude 115 e115TLERC. The previous owner JUST had the VRO deleted, new piston rings with 1 new piston installed, and carbs rebuilt. It was done in Kansas where I found it and then run for 3 hours on the lake to tune properly. The tank was cleaned out and refilled since it was sitting prior to this. Ran fine with muffs but as soon as I got it on the water it started acting terrible. First off it was hell to get started. And that's after they used 140 degree decontaminate water through it getting it all the way to operating temp there at the lake.
Symptoms:
At first, right after launch, it would stall out at idle so I screwed the idle speed to raise it some which helped. But any wave or wake and it would 9 times out of 10 Stumble and die. OR go from running perfect to sounding like it was thumping and misfiring.
Did 3 WOT runs and first 2 times the OMC lean fuel alarm (i think) went off. That's a guess, basically after 15-20 seconds at WOT the alarm would go off. On the final WOT run it literally just died. But started and idled right back up again. I disconnected the alarm and just kept it low trolling rpm rest of the time
The bulb went flat more than a few times.
And above all it was CONSISTENTLY INCONSISTENT. Going from running like butter and firing RIGHT back up after stopping, to not starting or having a very very hard time then the lopey misfire sound would kick in, then in the middle of that go back and forth from running perfect.
Finally after 2.5 hrs on the water with this thing doing this the whole time (MAYBE 1.5hrs actual run time) after literally 30 min of trolling just fine it died when I put it in neutral and wouldn't start back up at all for anything. I used the trolling motor to limp back to dock.
Conclusions:
1)I first thought carbs may need rebuild but after looking at the work order he gave me when I bought the boat it shows that it had been done along with float adjustment on one of the carbs.
2) I bought a new fuel filter thinking MAYBE the new one clogged fast even after the tank cleaning just from debris?
3) I brought it from Kansas which is at maybe 3k feet above sea level to Colorado springs where I use the boat at around 5500ft above sea. Re-Jet?
I purchased a water pump kit just to do for good measure. Will install before next run out.
But the take away was how inconsistent it was. From running and idling fine 1 second to an absolute horror show the next. Cranking non stop, manually pumping bulb, neutral 2/3 throttle starts etc. And wake from boats absolutely would affect it depending on the angle it would hit at it seems.
Please help, I want this to be safe for my family. Thanks ahead of time