Starting fluid caused compression loss????

[mpencegs]

So the story is that I had 140 to 150 compression on both cylinders.

I removed the carbs to clean them and also replaced O-Ring boots. Due to a mistake on putting the carbs back on I was only running on 1 cylinder. While troublshooting i used a copious amount of starting fluid.. The end result being that I have lost a good bit of compression on the cylinders with the carbs removed to ensure they are not the issue.

If I add oil to the cylinder the compression goes up but I am only get about 80-90 now.. Sometime lower..

 

[Nessism]

Throw that ether can in the trash.

Remove the carbs and clean them properly. Carb rebuild tutorial linked in my signature, plus there is a 450 specific carb rebuild tutorial linked on Basscliff's website...http://members.dslextreme.com/users/bikecliff/

Do the job right...ONE time...or two in your case.

Check the Top Newbie Mistakes thread too so make sure you are not falling into one of the common traps.

Work smart and you will save a lot of time.

 

[mpencegs]

Guess I was not especially clear in my post. I have cleaned the carbs again,, However they are currently removed for the compression test. I am wondering if the Ether could have caused the compression loss somehow.. I used the Basscliff tutorial to clean my carbs by the way.. I accidentally installed the needle jet upside down.. Still not sure how I let that one slip LOL..

so currently the carbs are removed and I get low compression. If I add oil to the cylinder then the compression goes up.. Could the ether have caused this issue to anyones knowledge?

 

[Steve]

Ether seldom does an engine any good, but I have not heard of it causing a loss of compression like that.

.

 

[koolaid_kid]

Starter fluid washes the cylinder walls, and the explosive effect of its unregulated explosion can unseat the rings from their lands. Not a good thing. Try putting just a bit of oil in each cylinder and running the engine to see if they will reseat.

 

[mpencegs]

ok I will see what happens..

 

[JEEPRUSTY]

Nothing wrong with ether when used for specific things.
One of them is to test the integrity of an ignition system.
A small shot will let you know that things are OK in the ignition when the machine runs on the ether. This would indicate a fuel system problem.

The stuff is being ignited by the sparking system and is subject to the same physical universe as air\fuel mixture.

If you has ever been in the deep woods with a recalcitrant diesel that refused to start you would name a child ether. Winter or summer.

Now if you are going to run the engine on it you are damned foolish and risk fire and all manner of mayhem.

Its made for a quick shot. If that does not work put it away and fix the real problem.

 

[Killer2600]

How long ago was it that you did the 140-150 psi compression tests? On a recently run engine I'd assume.

If anything is wrong with the piston wall sealing I'd have to suspect lack of proper oiling more than the use of starting fluid. I have to wonder just how you were using the starting fluid to cause a 60-70 psi drop in compression.

 

[Killer2600]

If you has ever been in the deep woods with a recalcitrant diesel that refused to start you would name a child ether. Winter or summer.

You know your not supposed to use ether on diesel's, every diesel engine manufacturer states this. Strangely some old skool diesel's setup for cold weather had an ether injection system from the factory.

 

[JEEPRUSTY]

You know your not supposed to use ether on diesel's, every diesel engine manufacturer states this. Strangely some old skool diesel's setup for cold weather had an ether injection system from the factory.

Used em on Caterpillar engines many many years ago. It was not disapproved of at all.

Used to have to fill a pan with diesel and light a small fire under the engines too cos oil was too thick in the cold.

God copious is such a sorry word.

 

[koolaid_kid]

So the story is that I had 140 to 150 compression on both cylinders.

I removed the carbs to clean them and also replaced O-Ring boots. Due to a mistake on putting the carbs back on I was only running on 1 cylinder. While troublshooting i used a copious amount of starting fluid.. The end result being that I have lost a good bit of compression on the cylinders with the carbs removed to ensure they are not the issue.

If I add oil to the cylinder the compression goes up but I am only get about 80-90 now.. Sometime lower..

This is the key to the issue. As JR stated, a quick shot will be O.K. Anything more risks injury, both to the engine and to your pocketbook.

 

[Steve]

You know your not supposed to use ether on diesel's, every diesel engine manufacturer states this. Strangely some old skool diesel's setup for cold weather had an ether injection system from the factory.

We had those on a couple of the trucks I used to drive.

The advantage of the installed system was that it was a CONTROLLED AMOUNT that was injected, therefore could not do as much damage.

.

 

[1_v8_merc]

Ether is an excellent last resort weapon, but that's all it should be.

 

[mpencegs]

Thanks for the reponses guys. I will update when I have more info..

 

[TheCafeKid]

Ether is an excellent last resort weapon, but that's all it should be.

It's also a good way to get your face blown off like my buddy Jeff did. 3rd degree burns over 50% of his body shooting that crap down an intake manifold and it blew back and he went up like a roman candle. Said he didn't even remember it, as one minute he was stupidly spraying the crap down the throat of his van, and the next minute he was on fire.

To this day I've never used it, and frankly you can call me a puss but I'm scared to death to be around it being used...

 

[mpencegs]

Thanks for the info guys.. My plan is as follows. Gonna work some oil in the cylinders and see what happens. If its still a pain I am gonna bite the bullet and pull the engine and the head and see whats going on in the cylinders then.. Really hope I didn;t cause more damage then its worth as it was running just hung a little before I borked the carbs.. SIGH********

 

[JEEPRUSTY]

You see saps doing the full on blast into manifolds all the time. An insane fire hazard esp in a backfire.

The fumes linger for a long time too.

Alas..............

 

[koolaid_kid]

Thanks Josh.
mpencegs, if this is what truly happened, all you would have to do is pull the exhaust, carbs, head and cylinder block. The engine can stay in the frame. But don't count your chicks before they hatch. Investigate first. Then analyze. Behind every silver lining there is a dark cloud.

 

[mpencegs]

SO added Marvel Mystery oil to the cylinders and initial compression test shows 95 on 1 and 100 on 2.. I am letting the marvel sit overnight or so and will retest and then go from there.. Gonna check my valves this weekend and see where I am at as well..