Boat specs: 1967 SeaRay 190SRV with OMC 185 in/out drive. GM small block V8,
283 cid.

Laid-up for winter, working top-notch at end of last season. Winterized
before storage.

Started right up after prepared for new season. When put in the water engine
started to have a miss. If distributor plug wire for cylinder number 7, is
removed from distributor cap, miss seems to go away.

Put all new ignition parts in and acted the same way.

Have tried to run boat in water to get rid of possible carbon, but boat bogs
and backfires even when increasing speed very slowly. At low speeds o.k.,
but when medium speeds are reached, backfiring starts.

Took off valave cover. No broken springs. Checked compression on all
cylinders and all had same psi of 90.

Mechanic suggested new gas.

Other mechanic at lake said low compression and take off both heads and have
hard seats installed.

Weird part is that boat ran fine at layup last fall. Inside all winter mand
profesionally laid up with new fluids and engine fogged out.

Any ideas what could be gong on.

Thanks,


S. Schaus