A brief history first. I was told the boat motored out to it's mooring five years ago and would not start for the rest of the season. It was hauled out and sat on the hard for the last four years. That's when I came along.
On examining the engine I found that the line from the primary filter to the lift pump was plugged solid. Delaminated? I've replaced the primary filter set up, all fuel lines, new secondary filter. The lift pump "looked" OK, no tears in diaphragm that I could see so I reinstalled it. I also pulled the head, checked cylinder bores, new head gasket, checked valve clearances. For the trial start I bypassed the fuel tanks and used a clean five gallon jug. I used a priming bulb to bleed primary and secondary filters ending with a clean bleed of the IP. I was hoping I could bleed the injector lines with the engine cranking.
Here's where it gets a bit odd. I would do five second spurts with the starter and after about a minute or so you would get a couple fast spins like it was starting to catch. thought I might try the cold start switch. Pressed it in, manual no solenoid, and after a revolution or two fired right up. But it went to a full race, thought I had a runaway, then died in a second or two. without the cold start engaged it would not fire up, would only spit and spin faster. with cold start maybe idle for a half second then race and die. Throttle was at 1/4 to 1/2 open, stop control lever in full run position.
After the third episode of race and die decided to check the forum for answers.
Thanks in advance for any help.
On examining the engine I found that the line from the primary filter to the lift pump was plugged solid. Delaminated? I've replaced the primary filter set up, all fuel lines, new secondary filter. The lift pump "looked" OK, no tears in diaphragm that I could see so I reinstalled it. I also pulled the head, checked cylinder bores, new head gasket, checked valve clearances. For the trial start I bypassed the fuel tanks and used a clean five gallon jug. I used a priming bulb to bleed primary and secondary filters ending with a clean bleed of the IP. I was hoping I could bleed the injector lines with the engine cranking.
Here's where it gets a bit odd. I would do five second spurts with the starter and after about a minute or so you would get a couple fast spins like it was starting to catch. thought I might try the cold start switch. Pressed it in, manual no solenoid, and after a revolution or two fired right up. But it went to a full race, thought I had a runaway, then died in a second or two. without the cold start engaged it would not fire up, would only spit and spin faster. with cold start maybe idle for a half second then race and die. Throttle was at 1/4 to 1/2 open, stop control lever in full run position.
After the third episode of race and die decided to check the forum for answers.
Thanks in advance for any help.