PHOTOS OF: siezing 135, mercury v-6, still turns over

[Solittle]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

Not on my puter - not even the red X.

 

[Hooty]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

dutch 135,<br />If you'll look at the first foto of the center cylinder, you'll see a gray spot about the size of a quarter right beside the intake port. That's a sure sign of running to lean.<br /><br />c/6<br /><br />Hooty

 

[Hooty]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

dutch 135, Your pics are gone now but they were here a while ago. I did see them though and like I said in the above post, seizing was caused by a lean mixture.<br />I posted some fotos a while back, and they vanished too. Must be in the "drier zone".<br /><br />c/6<br /><br />Hooty

 

[mattyhylander]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

from what i can see in your foto there is a lot of scuffing on the cylinder walls, could even be a broken ring that has caused this (has the motor been used heaps without ever being rebuilt?) definately a heat problem (from either no water or running lean) as if it was a lube problem then all cylinders would be affected. but to me it looks like a broken ring has caused the initial damage.

 

[dutch135]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

Hooty,<br />I had noticed the gray spots,, it's on all 3 of those pistons. You say that indicates a lean condition, and I assume you mean oil/gas mixture, not air/fuel mixture. What are your thoughts on this damage being caused by overheating? this motor has had some problems with the alarm at mid speed under load, but always cooled off when throttled up. (that's a whole different topic but i always wondered if it was someday going to cause me problems) <br />If this is oil/gas mixture problem, and is on all 3 carbs, then that indicates an oil injection problem right? <br /><br />Also, as far as repair, am I destined for a full rebuild? or, can these 2 cylinders be honed (depending on how bad they are), new rings/pistons, and solve the mixture problem and be put back together? I have never dealt with this type of rebuild, so any help or advice is appreciated. <br /><br />thanks guys

 

[93bronco]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

a lean condition would be air/fuel <in ob its oil too> . to me it looked like a piece of ring disenigrated <spelling>. i think after i rebuilt it i would use fuel/oil in tank , premix instead of the oil injection. lack of lubrication can cause alot of problems- overheating, seizing, and broken rings. i know with omc obs you can bore the affected cylinder/s.<br /><br />i also seen the pix, did the government remove them for homeland security reasons?????????????? was there hidden message there..its early just having fun.

 

[wilde1j]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

By "lean condition" most people are referring to fuel/air and is usually caused by carbs crapped up. This can be prevented by always running the engine out of fuel after every use. Too little oil usually affects all cylinders, bearings, etc.<br /><br />It's acceptable practice to rebuild the bad holes only, but my inclination once the motors is apart, is to replace pistons and rings all around and bore all holes.

 

[dutch135]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

ok, trying it again, with photos in a different storage place... <br /><br />

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[93bronco]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

i might be wrong but running fuel out of a premix is ok. but not recomended for any type of oil injection/vro unit. once set no air should be allowed into system. like i said i stand to be corrected on this one.<br />good to see pix back

 

[dutch135]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

What are the consequences of running an engine like this with the spark advance set a bit ahead of spec? I was told by one person that mine was set ahead, and they set it back to spec, but the motor wouldn't develop enough power to hardly plane, let alone pull a skiier. I set it back to where it had been, and got my power back and plenty of power for skiiers. Could this cause the problem I have?

 

[harrison20002]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

dutch 135: Go ahead and rebuild, it's plain your not going to be happy until you do. I can't for the life of me figure out why some people ask for advice then won't take it. Good Luck with your problem. Hal

 

[rickdb1boat]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

Rebuild Powerhead(All), rebuild the Carbs and get rid of the oil injection and Mix it 50:1. Change the water Pump and T-Stat, blow out all the passages with compressed air. Run double oil mix 25:1 until break-in period is done. This would be among the many other things to do. Good Luck,

 

[dutch135]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

thanks guys,,<br />so, from what everybody thinks, it looks like a carb problem that led to fuel mixture being too lean, and not my intermittent overheating problem. i definately want to do this right, and plan on having my cooling system checked over 100% along with the carbs, what is involved with unhooking this oil injection system? and is there any performance upgrades i can do while doing the rebuild? (bore etc)<br />and since i face all of this work, and it won't be until spring until i do it,, other than stabil in my gas should i worry about fogging the motor or winterizing other than pulling the battery? <br /><br />does anybody have an idea of what i should pay a good mechanic to do this work? (probably wont' be a big boat dealer,, but somebody that does motors like this in his own shop)

 

[Summer Fun]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

hey dutch call steve at riverside in rome ny he does all my work...he should do it cheap its winter ....wayne...shoot me a email

 

[Hooty]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

I'd re-ring all cylinders, bore cylinders that require it and replace the pistons that need replacing.Replace water pump,overhaul all three carbs and clear water passages.<br />As far as running the engine out of fuel when you shut down, you run the risk of one or two carburetors run out of fuel (and oil) before engine stops and then have cylinders still working without lube. I personally don' do it.<br /><br />c/6<br /><br />Hooty

 

[93bronco]

Re: PHOTOS OF: siezing 135, mercury v-6, still turns over

hooty thanx for that one never thought of it that way. with 4 carbs it could cause a problem <BIG> only do that on winterizing but not anymore.