2008 Crownline 19SS
4.3 mercuiser tks
Model # 4-2110G5u S
Serial # 1A074040
Current Issue:
The engine runs good at idle and starts easily (I got excited too early...) Starts to run rough, skip, bogs down, and backfires through the carb when advancing the throttle - starts getting bad just around 1,600-1,700 rpm and will not make much past 2,000.
Back story:
At the beginning of the summer I started the boat up and found water in the oil after the 1st run. Started the tear down to find the issue and located a crack in the intake manifold. I replaced the manifold with an edelbrock 2114 intake and a 4 brl - 2 brl adapter plate (thinking a future 4 brl upgrade down the line). Unfortunately the heads did come off and I had them checked out a a local machine shop as I didn't notice the crack in the bottom of the intake until it showed up as a rust line a few days later. I got everything back together with new gaskets and ended up with the issue above.
Tried:
New spark plugs were put back in to start with, wires and ignition all looked new. I have checked the new plugs and they appear normal. Double checked timing and firing order / wiring and everything appears to be correct. Base timing was set at 10 BTDC while grounding out the prl/white lead. Checked the timing while running and it is right at 10 deg, advances up to around 16 as the issues start. Replaced the fuel filter and I checked for air leaks by spraying some starter fluid around the carb base and intake with no results. Not sure were to go from here.
4.3 mercuiser tks
Model # 4-2110G5u S
Serial # 1A074040
Current Issue:
The engine runs good at idle and starts easily (I got excited too early...) Starts to run rough, skip, bogs down, and backfires through the carb when advancing the throttle - starts getting bad just around 1,600-1,700 rpm and will not make much past 2,000.
Back story:
At the beginning of the summer I started the boat up and found water in the oil after the 1st run. Started the tear down to find the issue and located a crack in the intake manifold. I replaced the manifold with an edelbrock 2114 intake and a 4 brl - 2 brl adapter plate (thinking a future 4 brl upgrade down the line). Unfortunately the heads did come off and I had them checked out a a local machine shop as I didn't notice the crack in the bottom of the intake until it showed up as a rust line a few days later. I got everything back together with new gaskets and ended up with the issue above.
Tried:
New spark plugs were put back in to start with, wires and ignition all looked new. I have checked the new plugs and they appear normal. Double checked timing and firing order / wiring and everything appears to be correct. Base timing was set at 10 BTDC while grounding out the prl/white lead. Checked the timing while running and it is right at 10 deg, advances up to around 16 as the issues start. Replaced the fuel filter and I checked for air leaks by spraying some starter fluid around the carb base and intake with no results. Not sure were to go from here.
