What caused piston to burn?

[rodbolt]

Re: What caused piston to burn?

hello<br /> I used spay carb cleaner on the recirc valves unless they are very nasty. if they are really nasty and the screens are clogged I just replace them.<br /> good luck and keep posting

 

[OBJ]

Re: What caused piston to burn?

Hooked....I would seriously consider replaceing the VRO pump with the latest up to date pump. I know the pumps ain't cheap but from your posts', and I think I read them right, it sounds like you had an oiling problem. Also, replace ALL your fuel and oil lines at the very minimum.<br /><br />Check out your alarm system for the VRO system and insure all alarms are working. You can find the procedures in the service manual.

 

[redshad]

Re: What caused piston to burn?

Hello this is hookedonjc Im now (redshad) Its been along time. I forgot my old password and email has changed.
Well 8 years later from my orginal first rebuild here I am again. Yeap she ran for 8 years not to bad for first rebuild with iboats experts help. I now have it broke down again with a broken seal ring on the crankshaft and a torn up block from it. Just wandering does anyone have any ideas what caused the seal ring to come apart. the last time I ran it before this problem I did have a plug foul out and I belive I was running on three cylinders for about 5 minutes. the pistions were fine only one damaged from the seal ring pices. Thanks for any ideas.

 

[rickryder]

Re: What caused piston to burn?

You would be best served if you started a new thread and not try to revive an 8 year old post.....

 

[Bondo]

Re: What caused piston to burn?

You would be best served if you started a new thread and not try to revive an 8 year old post.....

Ayuh,.... I agree, even though the OP is back with a different name.... It's still a very different problem...

 

[redshad]

Re: What caused piston to burn?

Hey not a problem to start a new thread I thought it was neat to have the old history on my engine to referance the engine to its past. I will start a new thread

 

[sschefer]

Re: What caused piston to burn?

Hey not a problem to start a new thread I thought it was neat to have the old history on my engine to referance the engine to its past. I will start a new thread

It is good to know the prior problem, put a link to this thread in your new thread. Just curious, did you ever figure out what caused it to overheat and lean out?..

 

[redshad]

Re: What caused piston to burn?

I sure did. After rebuild in 2004 I began mixing my oil in the fuel because of not trusting th VRO. well after some ruff ideling issues and such I discovered that the diaphram in the VRO was cracked around the washer inside the VRO pump. This I belive was the original problem and improper fuel oil mixture occured causing my original failure. By the way all but one piston was still in great shape when I pulled back apart last night 8 years later. The one with damage was caused by the pices of seal ring from the crank.