Need some help!

[TimS38]

Have a 0200av fuel injected boat, with 10:1 pistons. Recently switched to a pace maker and now the boat will fire up and the back two cylinders completely shut down until you hit 1800rpm and they kick back in. Even shot it with a timing light. Was told could possibly be the flex plate, not sure how that has to do with it. Also have no idea what new flex plate to buy, but any ideas could help.

Thanks!

 

[Slidin Gator]

Check the target gap between all the timing sensor and the set screw targets. Should be 0.040". Otherwise give Daren a call,

These numbers were from a few years ago in a pacemaker thread.

Rodney 407-709-1278
Darrin 407-709-9578

 

[TimS38]

Check the target gap between all the timing sensor and the set screw targets. Should be 0.040". Otherwise give Daren a call,



Gaps are correct talked to Darrin and he said he’s built 2500 of them only other issue was the flywheel and didn’t give to what flywheel was needed. Doesn’t make any sense why it would be the flywheel.

 

[John Fenner]

Now let's start with a simple check first, is there true 12 volts at the packs when cranking? If not, the alternator might be bringing in the voltage at the time the other pack fires up, another thought is,,
If the flywheel is an aftermarket unit and not a factory lycoming, the index could be off. A piston stop in #1 cyl rotate crank one direction till it stops, mark flywheel to center of case, rotate crank in opposite direction till it stops, mark flywheel again, the center of the 2 marks will be true top dead center, if that boss is not centerline with that mark then there is the issue, I would index #3 cylinder to mark TDC to be sure it is correct as well, a degree wheel may be needed to true things up or Relocate pickup coil at the TDC point where set screw rests.