Re: dead cylinder
Howdy, Bremp1. A dead cylinder doesn't necessarily mean a power head overhaul. Pull the plug from the dead cylinder. Is it wet?Stick your finger in the hole and turn her over. If she blows your finger out of the hole you don't need a major overhaul. If she does, compare it with the other cylinder. If the dead cylinder is noticably weaker than the good one you may have a broken or stuck ring. Stuck rings can be unstuck with a ring-free fuel additive. You can do this test more accurately with a compression guage; do both cylinders. They should give you over 100psi and not be more than 5 or 10 psi difference between them.<br /><br />Each plug wire should be able to jump a spark at least 1/2" to the block when you turn the engine over. If you lack spark to the dead cylinder, swap plugs, then coils and see if the trouble swaps cylinders.<br /><br />If your ignition and compression check out okay, pull the carb and reed plate from the dead cylinder. You should be able to eyeball any reed problem.<br /><br />If you still haven't isolated the problem, swap the carbs.<br /><br />If none of the above point to a particular fault, get back to us with what you learned.<br /><br />If a powerhead overhaul is what you need, it is worth it. That twin looper is still one of the best motors ever put on a boat.<br /><br />Standing by.<br />JB
