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Installed a new factory impeller ?

Get the boat for $1000 or less and open your tool box and wallet.

This the start of a long list of threads I think.-----Take big steps in rapid succession.----Find another dealer!!

Oil is pumped by a wee metal piston.

Folks today know little about mechanical things.----Do you see folks lifting the hood at the gas station to check oil ?----Or it costs too much to have the local boat shop do simple stuff like a lower unit reseal, I think.

All control boxes up to 1995 use the red plug.----Makes them " plug and play "----So to speak.

I am too far away.-------The newer boxes are better.

Control box up to a 1995 model works just fine.-----Should not be hard to find one.---Newer " thin style " ---is better.

I think there is a boat recycler in Georgia..-----Lanier georgia recyclers.------I am too far away to help with one.

I guess there are still folks out there running impeller dry.-----And still folks who do not install a new impeller every 5 years.

I do not believe you can ---" burn up "--- a VRO pump.

Your location ?

Does spark jump a gap of at least 3/8" , yes or no ?----Load tested the battery?----Inspected / tested the starter motor?

These motors start right up if in good condition.-----If the starter does not spin the flywheel fast enuff there will be no spark.---Does spark jump a gap of 3/8" on each lead with plugs still in the head ?------And are you pushing the key in and holding it in while cranking it over?-----Have...

Some of the V-4's and V-6 models ( bubble back ) from 1973 to 1998 certainly had the tuned exhaust.

Compression in 2 strokes is a confusing subject I think.

World's biggest salt mine is not far from me.------I think they have tons of ice melt

A---" crossflow "-- has a deflector on the piston crown to direct incoming charge to scavenge the cylinder.-----A looper has a flat / nearly flat crown and intake ports positioned to loop the incoming charge.

I doubt you can use a " diagnostic reader " on a 1990 4 cylinder Mercury !

These " holes " in the cylinder are also found on bigger motors including V-4 and V-6 models.-----People often state that a motor has " good " compression.----But many have no idea what it should be !