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? on 15 % coolpower - 3/13/2006 4:15:47 AM   
Timmahh



Posts: 2666
Joined: 2/24/2006
From: midland, MI, USA
Status: offline 		getting a good amount of what appears to be lube from exhaust when thrt up. doesnt seem to be any fuel in it, just lube that didnt burn. ? is am i running to rich? or is it that the CoolPower 15% fuel from morgan fuels has more lube percentage and this is normal... engine appears to be able to be leaned up a bit more. but not to much i think. thanx for your replys.
Tim
       Post #: 1

RE: ? on 15 % coolpower - 3/13/2006 4:25:02 AM   
carrellh



Posts: 3286
Joined: 3/30/2003
From: Garland, TX, USA
Status: offline 		The lube is not supposed to burn. Cool Power 15% has 17 or 18% oil which is a fairly common amount.
http://www.morganfuel.com/cp_blends.htm

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Carrell

(in reply to Timmahh)
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RE: ? on 15 % coolpower - 3/13/2006 7:28:10 AM   
Timmahh



Posts: 2666
Joined: 2/24/2006
From: midland, MI, USA
Status: offline 		i know its not supposed to, but some does.. i was just wondering if it indicates maybe too rich of a setting or if i could use less percentage of lube to help cut the the amount expelled but still keep the engine safe...
Thanx for the input.
Tim

(in reply to carrellh)
       Post #: 3

RE: ? on 15 % coolpower - 3/13/2006 11:24:48 PM   
carrellh



Posts: 3286
Joined: 3/30/2003
From: Garland, TX, USA
Status: offline 		Is it only excessive during transition from low to high speed? If so the low end needle could possibly be leaned some.

Will it idle for a long time without running rough or trying to die?
Does it accelerate from low speed to high smoothly and without hesitation?
If the answers to these questions is yes I wouldn't adjust anything.

As far as reducing the oil content, that depends on what engine you have. The CP fuel has the amount of oil that is recommended for many popular engines.

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Regards,
Carrell

(in reply to Timmahh)
       Post #: 4

RE: ? on 15 % coolpower - 3/14/2006 10:24:46 PM   
Timmahh



Posts: 2666
Joined: 2/24/2006
From: midland, MI, USA
Status: offline 		weathers been crap for 3 days now... but to answer your questions. it did seem to push a bit more durring throttle up. but was also seems a bit thick at wot.... also the engine would seem to DOG ever so slightly when 1st @ wot, then about 3 seconds later Came Into it very strong and stayed until i throttled down, did the same thing the 3 times i had wot.

seemed to idle very well once i had the lsn set better.. i probably could of ran a full tank at idle no probs.
no hesitation on throttle up, just seems a bit sluggish, but only occasionally when throttleing up.

one thing i didnt metion, which after closer inspection/thought i feel is a major part of my problem, is i had the gas tank inverted, with only a little amount of pressure line entering the tank, gas level was over the pressure line and probably flowing to the exhaust port.. i know it was when i shut the engine down. i watched it come from the exhaust pipe ... i didnt use any one ways yet. as i was just testing it all out so didnt think i needed them at this point, wrong thought.... i ve looked at a few documents for tank set ups and see the need for one ways even at this stage.
i have a question or 2. is there a specific oneway or relief valve i should get for exhausting extra pressure from the tank, or is it the same valve just after a tee to expell extra pressure into the atmosphere? any things i should be aware of when setting this up?
i also have a few of these around,(see pic) i think they are external fillers, but cant quite figure the set up out. can someone explain the set up of the 4 nipples on the back, im a bit confused. it seems if i Blow into the fill nipple, the air comes from the Vent hole. not any of the rear nipples. the 4 back nipples are set up like 2 flow thru... top 2 connected. bottom 2 connect.. i m missing how this rigs up. are these diaphram pumps maybe?

the black item is a one way i think, as it only allows flow in one direction.. i tempararily used this to stop fuel flow to the muffler but with no pressure releif vavle installed, the pressure built up in the tank so great in a one minute run, when i shut down the engine... the pressure in the tank continued to push fuel out the carb until i lifted the plane and allowed the pressure to escape... any help you could give this build/repairing newb would be great.
Tim


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(in reply to carrellh)
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RE: ? on 15 % coolpower - 3/15/2006 6:19:10 AM   
carrellh



Posts: 3286
Joined: 3/30/2003
From: Garland, TX, USA
Status: offline 		I don't have a clue what any of the items are in the photo.

What brand engine do you have?
What size?
Two stroke?
Four stroke?
Does it have a fuel pump?

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Regards,
Carrell

(in reply to Timmahh)
       Post #: 6

RE: ? on 15 % coolpower - 3/16/2006 4:02:35 PM   
Timmahh



Posts: 2666
Joined: 2/24/2006
From: midland, MI, USA
Status: offline 		im useing a .61 K&B 2stoke, no pump. inverted...... it runs really good in test stand. i think i just need to get my fuel system set up with proper relief valves and one ways to prevent the backward flow and all will be good...
thanx much
Tim

(in reply to carrellh)
       Post #: 7

RE: ? on 15 % coolpower - 3/16/2006 5:39:43 PM   
carrellh



Posts: 3286
Joined: 3/30/2003
From: Garland, TX, USA
Status: offline 		Is your test stand set up so you can run the engine inverted on the stand?

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Carrell

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       Post #: 8

RE: ? on 15 % coolpower - 3/16/2006 7:45:48 PM   
Timmahh



Posts: 2666
Joined: 2/24/2006
From: midland, MI, USA
Status: offline 		no, but i can make it so. im gonna try that. this engine was originally mounted into the plane inverted so im pretty sure its only the fuel system i have to deal with. just got back from my LHS. got parts, will see.
thanx
Tim

(in reply to carrellh)
       Post #: 9

RE: ? on 15 % coolpower - 3/17/2006 3:22:17 AM   
downunder



Posts: 3105
Joined: 10/10/2002
From: Adelaide, AUSTRALIA
Status: offline
quote:

ORIGINAL: Timmahh
gas level was over the pressure line and probably flowing to the exhaust port..

I think that's your problem right there. At full throttle you have maximum muffler pressure (most restriction to the exhaust escaping from the muffler) and when you come back to idle there's virtually no muffler pressure at all. But that full pressure in the tank can only be released by pushing fuel back through the pressure line into the muffler. With a lot of air space inside the tank it has to push out a lot of fuel to lower the pressure.

When you fitted the one way valve to the pressure line you trapped all the pressure so when you stopped the engine the only way for the pressure to drop was to push fuel out into the carb.

Take out the one way valve, bend the pressure line up close to the top of the tank and try it again.

(in reply to Timmahh)
       Post #: 10

RE: ? on 15 % coolpower - 3/18/2006 6:35:15 AM   
Timmahh



Posts: 2666
Joined: 2/24/2006
From: midland, MI, USA
Status: offline 		redid the tank, replaced the short tank tube with a long one for the vent, and put it to the top of the tank so its always above the fuel level, unless inverted.. and alls well.. the engine will idle all day with out a hick up and when i give it wot, it is alot better, no prefire or timeing issues. i still need to re-adjust the HSN now but, other than that, we ll see if i can crash...errrrrrr land it tomorrow.., maybe i ll post a few pix B4 i get in the air.. lol
Tim

(in reply to downunder)
       Post #: 11

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