Hi guys, I haven't had any time to diagnose the boat yet with work and a full kitchen remodel at the house it's been rough finding the time. But I have made notes with all the info and suggestions you guys have made. I really really appreciate it. I'm hoping to get some new results from the compression test. I will do a cylinder leak down test if needed depending on the results of the compression test. I'll also double check the casting numbers on the heads that's honestly something I would have never thought of. I'll try to have some solid results by sun or mon.


Sent from "The Brown Chair"

With the info that I have now though, do you think it would be OK to run with that one cylinder at 80?
Thanks again for all your help and feedback!


Sent from "The Brown Chair"

Just going to say it.

No.

It really is going to depend what the leak down test comes down to,  but two things going through my mind.

One,  if it's a rusty cylinder wall,  eventually it will have zero compression. It could also be a stuck ring,  ultimately cutting away at the cylinder. May be an easy fix now but an expensive fix after it goes all the way.

Two, if it's a valve issue,  as hard as these engines run,  it could ultimately overheat the valve and drop it into the cylinder,  with a great chance of destroying the entire engine.

I honestly think you should investigate further. That's why a compression test is done,  to try and prevent small problems from becoming catastrophic.

Good luck.

GT

Alright, I just did a leak down and I had exactly 20% loss which is in the green on the gauge. Good. So I decided to redue the compression test and I had 120psi. I don't know. Everything seems to be fine now.

All I know is this was a great lesson for newbie on the importance of PROPER diagnostic checks and big shout out to all you guys for all your help especially Ghett0man.

Thanks guys.


Sent from "The Brown Chair"

Also I plan on taking a trip to Elsinore tomorrow to see how the boat does under way. I'll post any info that comes from that.


Sent from "The Brown Chair"

Didn't have time to read all the way back but did you check your pump? Could have sucked something up clogging the cooling line and could have fouled up your pump/impeller . Just a thought


Sent from my iPad using SoCalJetBoats