Mfg oil vs Synthetic for breaking in

[Bwalker]

Re: Mfg oil vs Synthetic for breaking in

Its not the gasoline or the oil causing the cloud. Sounds like your low end carb tuning is in the rich side, your ignition advancer maybe out of sync or the Force just has a port layout not condusive to clean low speed operation.
IME certain motors operate cleaner than others iregardless of oil.

 

[pecheux]

Re: Mfg oil vs Synthetic for breaking in

Actualy Ben, I am trying to get that motor to idle almost as slow as the 9.9hp Johnson. which is real slowww. Perhaps a 15hp being a supped up 9.9 need to idle faster, donno. will try .. but i like to troll a lot at lowwww speed.

Low adjustement carb tuning is exactly half way from when the motor starts to sputter from stalling lean to sputter rich. Isn't that how it should be ? or should i give it a 1/8 turn leaner ? Actualy at this moment 1/4 turn leaner and the motor will stall after running 10 seconds or so. and 1/4 turn richer and it will sputter.

Will try anyway ... tx

 

[Bwalker]

Re: Mfg oil vs Synthetic for breaking in

IMO ditch the Force and buy a Yamaha.o

 

[walleyehed]

Re: Mfg oil vs Synthetic for breaking in

When it comes right down to it, the Force will not give the dependable, smooth charactor that the johnrude does. They were intended as an entry-level engine, and I believe that should mean reliability....Honestly, the Force just doesn't have that, and it may never run as the 9.9 Johnrude does.

 

[pecheux]

Re: Mfg oil vs Synthetic for breaking in

walleyehed: Well I was a great deal $ and I got lured by the fact that it was a 15hp. Make a difference in performance on a 14 footer fiber. I know it's not as good as the Johnson since I owned a 6hp and a 90hp Chrysler motors in the past. Beside smoking after trolling for a long time everything else is fine (it's still new) so I ll be on the look out for realibility.

Phrasing it differently: could it just need faster idling adjustement than a 9.9hp, since it is a 15 hp ?

Tx

 

[walleyehed]

Re: Mfg oil vs Synthetic for breaking in

Idle speed really has nothing to do with HP...BUT the way the engine was designed (engineered) has more to do with Idle reliability. The fuel/air mixture just doesn't flow as smooth as most, even though there is still more to it than that, it's just not known to be "user-friendly".

 

[pecheux]

Re: Mfg oil vs Synthetic for breaking in

walleyehed: it's just not known to be "user-friendly".
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Not sure I understand what this means ... I am mecanicaly inclined and good at carb ajustements.
There is one screw ... turn clockwise for leaner ... turn anti-clockwise for richer ... no matter what I do it always runs best at a very specific area (range)

This engine run great (it should it's new) at any other trottle speed, idling is the ony nay. Barrel testing I gave one full clockwise turn to the trottle ajustement screw to have it idle a little faster and will try it on the lake any day to see live result.

But no matter what I do it idles rough. But now that I think of it I once had a brand new Johnson 15 hp back in 1979 and if I remember well it also idled rough compared to the Johnson 9.9hp that I have now. Perhaps not as rough as the Force 15hp ... but rough.

May be the price to pay for the xtra power ... LOL

cheers

 

[Bwalker]

Re: Mfg oil vs Synthetic for breaking in

The motor probaly does a poor jobof scavenging at low speed thus the smoke.

 

[tommays]

Re: Mfg oil vs Synthetic for breaking in

My only chrysler was a 4Hp sailboat kicker that did not need to run right for more than 20 minutes a day

It just NEVER ran right allways hard to start it got so bad i put my 1962 5.5 johnson back on the boat and lived with the PITA of a shortshaft motor on a boat that needed a long shaft

Tommays

 

[pecheux]

Re: Mfg oil vs Synthetic for breaking in

bwalker: What is scavenging for an outboard motor ? IS this a reference to carburator ?

tommays: My 15hp run great, starts on second pull, it's a 1997 says' by mercury' which I think implies certain improvements to the old US Marine/Chrysler motors in terms of electronic and lower unit.

Obviously NOT the same quality as the Johnson. Both my mecanic friend and my local Merc dealer people tell me Force are good engines as long as one considers the entry level price or purchase. Paid $ 650. CA for mine, not a scratch, had not been used ... compared to $ 2800. for a new Merc or BRP I am appreciative.

Regards to y'awl

 

[Bwalker]

Re: Mfg oil vs Synthetic for breaking in

I was reffering to the efficancy of the port layout at low RPM.
I think the consensus is that the Force is a low dollar engien that shouldnt be expected to perform like a Johnson or Yamaha. Personaly I do not know anything about Force motors. I am just guessing.

 

[pecheux]

Re: Mfg oil vs Synthetic for breaking in

bwalker: ok got it tx
Force/Chrysler were low entry level motor for sure ... yet gave plenty for the investement ... you get what you pay for.
Basicaly I find that the refinements are not present ...ex: among other things shallow water trolliing as to be engaged manualy instead of lever controled on the Johnson .. little things like that .but it does the job.

I never owned a Japanese outboard but I would think they are of superior design.

 

[pecheux]

Re: Mfg oil vs Synthetic for breaking in

Ran 10 hours on the Force 15hp with regular petroleum 2 cycle oil in case it needed breaking in then switched to synthetic. background story was the engine had less than 5 hours on it.

I detected some improvement with the synthetic oil in terms of smoother WOT operation and perhaps a few more RPM.

Rough Idling and smoking was partly solved by increasing idling speed.

 

[waterinthefuel]

Re: Mfg oil vs Synthetic for breaking in

bwalker: What is scavenging for an outboard motor ? IS this a reference to carburator ?



Both my mecanic friend and my local Merc dealer people tell me Force are good engines as long as one considers the entry level price or purchase. Paid $ 650. CA for mine, not a scratch, had not been used ... compared to $ 2800. for a new Merc or BRP I am appreciative.

Regards to y'awl

I'd still get a Johnson. An unreliable outboard is something that a couple thousand dollars of initial savings can't justify. When I'm out on that lake, it better start. If it doesn't, it's gone.