wiker5
06-12-2018, 08:43 PM
01 Mobius V with the 350 indimar(chevy) carb
All my issues have stemmed from once incident, I was out and the ignition wire fell off(has to mess with it a few days before at the dock). At the time I didn't have exhaust flaps, they showed up the next day. So when I stalled when the ignition wire fell off water was sucked into 2 cylinders. The engine was in lock, at this time I thought it was the starter, got it rebuilt, reinstalled and found it wasn't the started. I pulled the plugs and found water in 2 cylinder on opposite sides of the motor (#1 on port, #4 on starboard). Pissed the water out, oiled the cylinders, and replaced all plugs. Motor now runs, it starts hard cold and warm, but will idle slightly rough at 700-800 rpm. I took it out for a spin and can only do maybe 25-30ish MPH and only get to 3500 RPM compared to 4500 plus. The boat also lacks the punch it used to have when you drop the throttle, and even after its warm you must advance the throttle to start it, this was never a problem before. It also smells slightly of gas when running, but no visible signs of leaking. It does idle once warm.
What is everyone's guess? Or places to start.... I'm thinking compression test to rule out a bent valve. Its not the throttle cable I checked, that would just turn up or down the idle. Any other ideas of places to look or ideas? I just pray I don't have to pull the heads and deal with that but looking that way.
Thanks, had a great year started, always remember to check your exhaust flaps, the boat was new to me and I was so excited to put it in the water I didn't order them soon enough.
All my issues have stemmed from once incident, I was out and the ignition wire fell off(has to mess with it a few days before at the dock). At the time I didn't have exhaust flaps, they showed up the next day. So when I stalled when the ignition wire fell off water was sucked into 2 cylinders. The engine was in lock, at this time I thought it was the starter, got it rebuilt, reinstalled and found it wasn't the started. I pulled the plugs and found water in 2 cylinder on opposite sides of the motor (#1 on port, #4 on starboard). Pissed the water out, oiled the cylinders, and replaced all plugs. Motor now runs, it starts hard cold and warm, but will idle slightly rough at 700-800 rpm. I took it out for a spin and can only do maybe 25-30ish MPH and only get to 3500 RPM compared to 4500 plus. The boat also lacks the punch it used to have when you drop the throttle, and even after its warm you must advance the throttle to start it, this was never a problem before. It also smells slightly of gas when running, but no visible signs of leaking. It does idle once warm.
What is everyone's guess? Or places to start.... I'm thinking compression test to rule out a bent valve. Its not the throttle cable I checked, that would just turn up or down the idle. Any other ideas of places to look or ideas? I just pray I don't have to pull the heads and deal with that but looking that way.
Thanks, had a great year started, always remember to check your exhaust flaps, the boat was new to me and I was so excited to put it in the water I didn't order them soon enough.