I am experienced but have a stumper.
Twin 305's in a Carver, inboards
Saltwater got sucked into the port engine when hose clamp broke. I did not know, the boat sat for a month and the heads got rusty with two valves that siezed. Valves freed up easilly, but still would not start.
I ended up replacing the heads with new ones, still will not start. Will not even cough with starter fluid. Slows and speeds up while turning over and adjusting the timing.
Good gas, Starboard engine runs fine.
Getting gas through carb. Even changed to a known working backup carb. (Roch quad)
At top dead center, distributor is pointing to plug #1 (watching valves, seeing intake cycle, tdc before exhaust cycles)
125lbs or more on 4 cylinders, 80 or more on 2 cylinders
Cylinders had minor surface rust, no scoring, I expect compression to come up some once it is running, but it is plenty to run it as is.
Seemingly good spark to each plug. Sharp blue spark at distributor. Plug wires one year old and inspected.
SO I have compression, spark, gas and air. Exhaust is clear.
What have I missed?????????
Twin 305's in a Carver, inboards
Saltwater got sucked into the port engine when hose clamp broke. I did not know, the boat sat for a month and the heads got rusty with two valves that siezed. Valves freed up easilly, but still would not start.
I ended up replacing the heads with new ones, still will not start. Will not even cough with starter fluid. Slows and speeds up while turning over and adjusting the timing.
Good gas, Starboard engine runs fine.
Getting gas through carb. Even changed to a known working backup carb. (Roch quad)
At top dead center, distributor is pointing to plug #1 (watching valves, seeing intake cycle, tdc before exhaust cycles)
125lbs or more on 4 cylinders, 80 or more on 2 cylinders
Cylinders had minor surface rust, no scoring, I expect compression to come up some once it is running, but it is plenty to run it as is.
Seemingly good spark to each plug. Sharp blue spark at distributor. Plug wires one year old and inspected.
SO I have compression, spark, gas and air. Exhaust is clear.
What have I missed?????????
