over oiling fuel

[C-RAVEN]

This may be a dumb question ....<br />if you get too much oil in your fuel mix, say 40:1<br />instead of 50:1, are you likely to experience problems other than fouled plugs and smokey exhaust ? ?<br />my understading is better a little too much than not enough<br /><br />Thanks

 

[Dhadley]

Re: over oiling fuel

If you used a quality oil I doubt you'll see any difference.

 

[roscoe]

Re: over oiling fuel

You will obviously have... <br />.<br />.<br />.<br />.<br />.<br />.<br />.<br />.<br />a few less pennies in your pocket.

 

[C-RAVEN]

Re: over oiling fuel

i dumped the usual amount of oil in the tank before lifting it to find out there was 3 or 4 lires of fuel left in it.<br />didn't think it would matter<br /><br />a friend of mine forgot to add oil to the fuel mixture for his 65hp merc, it had one last wot ride around the lake before it became scrap metal.

 

[Scaaty]

Re: over oiling fuel

I ALWAYS run my 125 at 40:1 instead of 50. Can't hurt a thing

 

[Kiekhaeferscurse]

Re: over oiling fuel

Hi C-Raven, I was over at Fleming beach the other day (Esquimalt Anglers) taking the dog for a walk was amazed at all the trailers in the park Have you been fishing at all at the waterfront?<br />My 2 cents worth on your Oil mixture is not to worry about it and burn the tank off.<br />Saying that though I'm not a great believer in more is better. I've fouynd a lot of engines are destroyed because of stuck rings in there lands, the rings tend to stick when the unburned oil reduces the ring to land clearance, (it gums up the works for a lack of a better term) My prefered Mix is 92 octane fuel low ash High Grade tcw3 oil. Have a Happy New Year Cheers

 

[C-RAVEN]

Re: over oiling fuel

Hi Merc curse! ya i launch out of oak bay (cattle point) and been fishing the waterfront. it was pretty good for a while there.<br />i have taken 4 springs in the last 3 weeks ranging from 6-13 lbs.<br /><br />I will be fishing over the new years break...<br />green/glo coyote spoon behind a green/plaid flasher <br />is working for me.<br /><br />we lost a nice fish to a nasty seal last friday<br /><br />good luck out there!

 

[Kiekhaeferscurse]

Re: over oiling fuel

Good job on the springs, I havent been out since...ooh gosh cant remember now, partner has pulled his boat & mine is still in re-fit, Next year I guess......<br /><br />Gonna be a long winter for me I think..lol

 

[walleyehed]

Re: over oiling fuel

My prefered Mix is 92 octane fuel

I assume you are running a higher compression ratio than stock????<br />92 Oct will do as much, if not MORE damage than too much oil, unless it's above 135-140lbs comp.

 

[Kiekhaeferscurse]

Re: over oiling fuel

last time i checked the fuel at are marine pump is 92 octane (canada)<br />My engine is a 92 150 with L&S chambered heads ported by me(dont know if it actually came up in powerer Dyno showed no differnce, Boisen reeds dont recall what jets are in the carbs engine torque & cheque showed wot hot psi 160 across the board, timing is now at 23 max no electronic retard devices.<br /> Do you think it would run okay on 87 its a fair bit cheaper & I would love to run it but dont know if I want to take the chance<br />Thanks Walleyehed

 

[Kiekhaeferscurse]

Re: over oiling fuel

I forgot to mention Max rpm with the prop I'm running now is 65 on a cool day (sea Level salt water) I cruise at 45 when I can afford the gas (yes the engine has an aluminum flywheel) I just worked out some fuel figures and costs it would save me quite a bit of coin per year if I can run the lowere grade fuel.Thanks again on anythoughts

 

[Nos4r2]

Re: over oiling fuel

I was under the impression that the older outboards were designed to run on what was sold in the UK as 2star fuel which I believe was 87 octane? DONT TAKE THIS AS GOSPEL- if anyone knows different please let me know!

 

[walleyehed]

Re: over oiling fuel

If you know your gauge is right and are getting a true 160lbs. comp, run 92-93.<br />Explain exactly what and how you ported if you would..

 

[Kiekhaeferscurse]

Re: over oiling fuel

Its a Snap-on guage, but i've never compared it to any others or had it checked at anytime since I bought it.<br />liners were carved to match the block, exhaust side deburred thats it.<br />exhaust is vented out the back, with a Home made exhaust relief snout, velocity stacks feed the old carb's.<br />Plugs are always a nice tan (motor doesnt to any idling other than cool down). I'm going to go down to the marine Pump tommorrow and see what the octane is for sure.I'm doubting my memory now...lol<br />Cheers

 

[walleyehed]

Re: over oiling fuel

Alot of the marinas' are running high-octane fuel because alot of the higher out-put I/O's require it as do some of the newer outboards.<br />The swirl pattern in the combustion chamber is an important factor as well...some are more efficient than others, and some of those vintage mercs were power-houses.<br />160lbs. comp is "high", and if that's the case, I'd stick to what you've been using.<br />My next question would be...is the Octane rating the same in Canada???? (Same method)

 

[C-RAVEN]

Re: over oiling fuel

In Canada the octane ratings are as follow:<br />regular - 87 octane<br />mid grade 89 octane<br />premium 92 octane<br /><br />i use mid grade, which is what the marina's sell at the same price as regular ( no road taxes)<br /><br />i was advised by a friend who runs a service station that regular gas is a very poor quality fuel which quickly deteriorates causing gum and varnish deposits .

 

[Kiekhaeferscurse]

Re: over oiling fuel

thanks for the heads up c-raven, I thought that the marina pump gas i was buying was 92, so all this time i've been running on 89 with no ill effects yet. I really feel that the key to longevity is keeping these two strokes clean internally, I run quik Kleen constantly & decarbon power head at least twice a year. I hate to admit it, but this year I'm going to run a 4stroke kicker, so I guess I'm not going to have to worry about the carbon buildup anymore in the kicker, kinda worried about that huge hunk of heavy iron hanging off the back of a kicker bracket.<br /> I'm looking for a cmc tilt bracket so i can at least leave the kicker in the down position and tilt it with the hyd, bracket.<br />What are you running for a kicker c-raven?

 

[C-RAVEN]

Re: over oiling fuel

Running an 8hp Honda 4 stroke kicker.<br />I'm impressed with the Honda product.<br />Mine is old too(1993) but it still runs well.<br /><br />Have to confess i have never de-carbed ....<br />is there a noticeable improvement in performance?<br /><br />where do you buy "quick kleen" ?

 

[Kiekhaeferscurse]

Re: over oiling fuel

Qiuk Kleen is a mercury product. but I imagine you can get the same stuff at Clucky Tire, mixes with fuel and removes carbon deposits.<br />decarboning engine is done with Power Tune (merc product) but its a nasty smelly process, you wont notice any difference in performance but it will help keep the carbon away from the ring lands which can lead to total engine destruction.<br />Cheers