When it happens check to see what spark strength is with gap tester , see if you have proper volts to positive side of coil ( not sure if u have points or electronic) , disconnect tach wire at coil
if you ever have an issue out on the water you will not need the manual ...
I keep a spare module, trigger sensor and coil in my tool box on the boat...
I meant 16" pitch I generally ignore the diameter. You mentioned 16" being too low, 21 " pitch being a little lazy. was wondering if you had tried a 18" or 19" pitch being in between. I had found the 18" vortex good for all around , would just swap it for the 16" when skiing.
Thats nice always help folks, I figure it could be dead in the water next time. 4 years ago saw a boat in middle of lake with engine hatch up, stopped by. there engine just quit locked up... Towed them about 2 miles to the nearest launch
Very similar to my old boat that had a 3.0 could make it work but need more azz...
my experience with the 16 was not quite as high revs but u there. Did you try a 18" or 19" 4 blade ?
In the end bigger boat and engine is probably in your future. We went from a 17 or 18ft 3.0 to 21 ft 5.0 ...
this is out of a merc 5.0/5.7 engine manual specs are same for both the EST coil and TB coil...
Primary side - .6-.8 oms
Secondary - 9,400-11,700 ohms
Attached is a snip of how to test the pick up coil in the est . This is for a delco but Ass/u/me yours is similar
if you had issues on the trailer with the delco yes the module or trigger sensor in there is messed up. It takes absolutely no power to rev the engine up on the wagon with no load.
Have you used a spark gap tester on both. Willing to bet the delco is not putting out any spark strength. I...
That is a good plan. Maybe not at 22 degrees if initial is too low but say 25-26. That should give a good indication of if the issue is due to total timing or spark strength/quality. Even if idle quality suffers once you get into the throttle it will start advancing.
On the timing difference -...
rear main seal. I believe Scott Danforth was mentioning the fact that the first year for the 4.3 in 1985 is the only year that used a traditional 2 piece rear seal vs the more modern single rear main seal.
If you have been running that much timing for 5-6 years and were detonating I think you...
Was wondering if you are running overly rich and this need more timing. Would at least watch the plugs for signs of detonation if you are bringing in more total timing than stock. Would keep an eye on this as you work through things
I know when I bought my new base engine warranty stipulated...
You could do that but only makes sense if the stringers and transom are good. Likely will need new engine stringers for the side mount on the 4.3 vs the front mount on the straight six.
personally I think you would be better off finding a more recent boat with a cracked block or dead engine to...
Obvious float needle seat issue. Hard to say what is wrong with out pics. I might be worth sending back to shop if you can’t get it. But it sound like you need to empty and clean fuel tank and system.
