Mercruiser 170 in the 2019 season - Now Bogging

[1966Mustang]

So, this past summer saw the v20 in various states of repair work. First firing up of the season uncovered a leaky timing cover from the cam seals. Redi-sleeved and replaced the seals with little problem.

PRO-TIP - Go rent a crank pully puller from the auto store prior to starting. You'll need it when you reinstall the crank pully too...
Also got the fuel tank sucked out and flushed and cleaned up.
Discovered that the block off plug on the exhaust runner (casting hole/access? was rusted out. Repaired that.

Finally got on the water this past Sunday. Floats, Idles, shifts into gear

all OK. Get out into the channel and bring up the RPMs - Bogs and Falls flat.

WTF!!!!!??? Anyway - idled back to the launch, tried some things, went back out, came back in and put it back on the trailer, all in 30 minutes.

Went home, pulled the dizzy, checked that the weights were free, rechecked the timing, etc etc.
Went out today and picked up another carb, (Mercarb for a 120/140 though...) threw that on, idles great, but still same bog. Annulars are dropping fuel in - I thought it would be more of a mist, but it's more like sloppy drops. Didn't rebuld this 2nd hand carb yet - literally sprayed some dust off it, sprayed some silicone in it, worked the accelerator pump, slapped it on, plumbed it up and started up.



Did not pull the spark plugs, did not check compression. yet.


So that's where it stands on Sep 3rd. Any advice? Anyone want to come drink beer and speculate on repairs here in Norfolk?



Pretty discouraged, but still hopeful :D