Force 150 - Low compression question for the experts!

phatslim

Cadet
Joined
Aug 22, 2013
Messages
23
Hello, I am very new to the boating realm so go easy on me. If I ask a stupid question, which is probable, just remember that I'm a total newbie. While I've read several hundred posts on this forum and respect the knowledge, I'm only now taking the plunge to post.

That said, we're looking at a starter boat just to zip around in and tube with the kids. The one we're looking at is a 19' Bayliner (I know, not the Rolls Royce of boats) and it has a Force 150.

I've scoured the internet reading all I can but because I have ZERO mechanical capability, half of the buzzwords in these posts are over my head.

I am told that there is low compression in one of the cylinders (60-65) and that the others are strong. I don't know numbers beyond that...just "strong" (I'm awaiting actual numbers from their boatyard).

My question is this...what the heck does that mean? And is it a sign of imminent death to the engine? Can you run the boat with one flawed cylinder or is that a recipe for disaster?

I'm told it "just needs rings" according to their mechanic. No clue if that's accurate or not.

So, assuming the other cylinders are indeed strong, is the one with low compression a HUGE red flag? Can it be fixed if so?

The price is attractive but I don't want to end up with an expensive lawn ornament.

Any help would be appreciated but telling me to remove caps and look at various doo-dads is pointless. My engine know-how is non-existent.
 

thelmuth

Cadet
Joined
Oct 5, 2009
Messages
23
Re: Force 150 - Low compression question for the experts!

I would not recommend running it like it is. It may be rings, but it could be a number of other things causing the low compression. Continuing to operate it with low compression can lead to other damage. With your self described mechanical ability and knowledge I would recommend you walk away from this unless you have a big bucket of money to throw into it.
 

bojango541

Petty Officer 2nd Class
Joined
Jan 27, 2009
Messages
128
Re: Force 150 - Low compression question for the experts!

Walk away! As mentioned above, it could be rings which isnt a huge deal, but I would suspect there is probably damage to that cylinder and piston. A mechanic will probably charge you more to fix that that you will be paying for the boat.

Even if it is just rings, you will need to tear the motor down to fix that.

I would keep looking, there are plenty of other boats out there
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Force 150 - Low compression question for the experts!

What they ^^^ said.
 

phatslim

Cadet
Joined
Aug 22, 2013
Messages
23
Re: Force 150 - Low compression question for the experts!

Thanks all. I suppose deep down I knew it was better to wait, but patience isn't one of my strong suits. Then again, neither is a giant bank account. :) I appreciate it!
 
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