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Forum: Other stuff

23 September 2008, 21:29

Replies: 22

Why is my Engine a Heavily Smoker ?

Views: 3,020

Posted By captnjack

Most older engines (70s and earlier) ran at 25:1 ...

Most older engines (70s and earlier) ran at 25:1
Since roughly the 1980s (depending on brand and incorporation of oil injection technology) engines were 50:1
Just before 4 stroke technology took...

Forum: Other stuff

23 September 2008, 20:47

Replies: 22

Why is my Engine a Heavily Smoker ?

Views: 3,020

Posted By captnjack

Yes, about that. And running a 50:1 engine...

Yes, about that.

And running a 50:1 engine at 25:1 will produce lots of smoke and fouled spark plugs too. Running a 25:1 engine at 50:1 will not make smoke but it will probably shorten its...

Forum: Other stuff

23 September 2008, 17:12

Replies: 22

Why is my Engine a Heavily Smoker ?

Views: 3,020

Posted By captnjack

True but I don't have an actual can handy. 6oz...

True but I don't have an actual can handy. 6oz volume of water = roughly 6.1oz weight. Assuming tuna is little denser than water the mix gets closer to 25:1. It can't get anywhere near 50:1

Forum: Other stuff

22 September 2008, 19:00

Replies: 22

Why is my Engine a Heavily Smoker ?

Views: 3,020

Posted By captnjack

You must have very small cans of tuna. ...

You must have very small cans of tuna.

Around here, tuna comes in 6 ounce cans. 1 gallon = 128 ounces. 128/6 = 21.3:1

Darker smoke (not steam) usually = excess oil, so this makes sense.

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