Hey guys, First, I should tell you what I replaced then I'll tell you my symptoms.
1 New Distributors (Pertronix D241800)
2 New Coils ( Pertronix 45111 ) No external Resistor Required
3 New Carbs ( Edelbrock 1509 )
4 New Manual Fuel Pumps (Edelbrock 1720)
5 New Spark Plugs and Spark Plug Wires
6 New Fuel Lines and Inline Filters
7 New Ridged fuel line from pump to carb.
8 New Engine Wiring harness
9 New Fuel Tank and yes gas is fresh.
10 New Marine Gear reduction Starters (My best Purchase so far!)
So I have two inboard lm318's. The port engine starts fine and has the same parts as the stbd. Keep in mind when you post a reply that my boat is 1200 miles away and I wont get back to it for another month. I'm going to compile a list of things to try next from this thread.
I can crank and crank the engine and after maybe 20 attempts I get ignition maybe three times. It will only run for 5 to 10 seconds and only with WOT. I thought maybe I had a flooding issue because the spark plugs were wet after every start attempt. Here's the list of things I've tried so we don't get redundant with this thread....
1 Grounded spark plug verified spark
2 Verified timing twice. #1 cylinder at TDC compression, (yes I already know where #1 is from the mile long historical thread, LOL)
3 Removed fuel line from carb verified fuel flow. (next trip I'm bringing a pressure gauge for T/S)
4 Swapped carbs from working motor, stbd still won't start and port runs fine with stbd carb. Carbs OK! I plan on doing the same thing with my fuel pumps next trip.
I guess that's basically it because I followed the basic engine T/S tree. Fuel, Ignition and air. I can ad some more history that might help. Bare with me.
The boat was sitting for three years in a yard. The usual layup was done before winter. So anyway the day before that I was going to put the boat in the water I wanted to make sure I had at least one operating motor. The port wasn't ready yet so I focused on the stbd. I put the new edelbrock 1509 carb on the stbd engine and it started right away, no hesitation. I ran it for about 30 minutes and then I was satisfied that it would be fine. I also plumbed in an electric fuel pump on the stbd tank to suck out any water that might have been in it. The next day I put the boat in the water and tried to start the stbd engine. It ran horribly, tons and tons of black smoke was coming out the exhaust. Too much fuel right? It only would run at WOT. After a few minutes of that crap I shut it down and could never get it started again. I thought maybe from transport I stirred something up in the tank, but here's the strange part. I have fuel selector valves for my motors. I can run the Port engine from either the stbd or port fuel tank. The port engine runs fine from either tanks. So its not the fuel tank. The only other thing I can think of is maybe I have an obstruction in the selector valve for the stbd engine or some kind of blockage downstream of that. But the symptoms show too much fuel not fuel starvation. I'm a little confused as to why it wont run at all. Any suggestions would be much appreciated and I'll take your advice and put it into action next time I'm in Alaska. Thanks
Russell
1 New Distributors (Pertronix D241800)
2 New Coils ( Pertronix 45111 ) No external Resistor Required
3 New Carbs ( Edelbrock 1509 )
4 New Manual Fuel Pumps (Edelbrock 1720)
5 New Spark Plugs and Spark Plug Wires
6 New Fuel Lines and Inline Filters
7 New Ridged fuel line from pump to carb.
8 New Engine Wiring harness
9 New Fuel Tank and yes gas is fresh.
10 New Marine Gear reduction Starters (My best Purchase so far!)
So I have two inboard lm318's. The port engine starts fine and has the same parts as the stbd. Keep in mind when you post a reply that my boat is 1200 miles away and I wont get back to it for another month. I'm going to compile a list of things to try next from this thread.
I can crank and crank the engine and after maybe 20 attempts I get ignition maybe three times. It will only run for 5 to 10 seconds and only with WOT. I thought maybe I had a flooding issue because the spark plugs were wet after every start attempt. Here's the list of things I've tried so we don't get redundant with this thread....
1 Grounded spark plug verified spark
2 Verified timing twice. #1 cylinder at TDC compression, (yes I already know where #1 is from the mile long historical thread, LOL)
3 Removed fuel line from carb verified fuel flow. (next trip I'm bringing a pressure gauge for T/S)
4 Swapped carbs from working motor, stbd still won't start and port runs fine with stbd carb. Carbs OK! I plan on doing the same thing with my fuel pumps next trip.
I guess that's basically it because I followed the basic engine T/S tree. Fuel, Ignition and air. I can ad some more history that might help. Bare with me.
The boat was sitting for three years in a yard. The usual layup was done before winter. So anyway the day before that I was going to put the boat in the water I wanted to make sure I had at least one operating motor. The port wasn't ready yet so I focused on the stbd. I put the new edelbrock 1509 carb on the stbd engine and it started right away, no hesitation. I ran it for about 30 minutes and then I was satisfied that it would be fine. I also plumbed in an electric fuel pump on the stbd tank to suck out any water that might have been in it. The next day I put the boat in the water and tried to start the stbd engine. It ran horribly, tons and tons of black smoke was coming out the exhaust. Too much fuel right? It only would run at WOT. After a few minutes of that crap I shut it down and could never get it started again. I thought maybe from transport I stirred something up in the tank, but here's the strange part. I have fuel selector valves for my motors. I can run the Port engine from either the stbd or port fuel tank. The port engine runs fine from either tanks. So its not the fuel tank. The only other thing I can think of is maybe I have an obstruction in the selector valve for the stbd engine or some kind of blockage downstream of that. But the symptoms show too much fuel not fuel starvation. I'm a little confused as to why it wont run at all. Any suggestions would be much appreciated and I'll take your advice and put it into action next time I'm in Alaska. Thanks
Russell