Post by: DoubleJ on August 09, 2013, 04:03:43 PM
First trip out, we were doing 15mph. Today, we struggled to get to 4mph. Still the 32-1 mix in there. Pretty sure the plugs are fouled. It smokes on start up but the smoke goes away with use. If i thin the mix a bit with more gas, will that burn the gunk off the plug? I'm at the lake with no plug socket :bash:
Post by: MtnMuley on August 09, 2013, 04:05:26 PM
Post by: Buckmark on August 09, 2013, 04:07:03 PM
When i first picked up the 7.5hp boat motor, my dad had mixed the oil 32-1 and said that's how much. Seemed high. Later found out it's 50-1Yep like mtn said, start over, dont try an play mixologist with adding more fuel, not worth ruining the motor, and no it wont clean out the plug, at least not in short order, and if your get it lean enought to clean it you will cause engine damage...
First trip out, we were doing 15mph. Today, we struggled to get to 4mph. Still the 32-1 mix in there. Pretty sure the plugs are fouled. It smokes on start up but the smoke goes away with use. If i thin the mix a bit with more gas, will that burn the gunk off the plug? I'm at the lake with no plug socket :bash:
Post by: DoubleJ on August 09, 2013, 04:11:05 PM
Post by: Buckmark on August 09, 2013, 04:13:46 PM
No plug socketFind one, borrow one....Hate to say it but if it starts and idles, and goes but not over 4mph the plug is most likely not fouled. Most 2 stokes that foul a plug will not start..
You need to slow troll anyways... :chuckle:
Post by: CP on August 09, 2013, 04:19:40 PM
Post by: turkeyfeather on August 09, 2013, 04:24:00 PM
Post by: DoubleJ on August 09, 2013, 05:11:51 PM
No plug socketHate to say it but if it starts and idles, and goes but not over 4mph the plug is most likely not fouled. Most 2 stokes that foul a plug will not start..
Same thing I was thinking. It's just gotten worse and worse every time i've taken it out, which is about 4 times. Don't know what it could be though. Grasping at straws
Post by: turkeyfeather on August 09, 2013, 05:14:44 PM
Post by: jay.sharkbait on August 09, 2013, 05:18:38 PM
Also the tank isn't vapor locked right? Does the engine run different if you squeeze the bulb while running wide open in gear?
Post by: jrebel on August 09, 2013, 05:25:16 PM
There should be a fuel screen/filter on side of the motor. It's usually held on with a knurled thumb screw. The screen could be clogged.
Also the tank isn't vapor locked right? Does the engine run different if you squeeze the bulb while running wide open in gear?
Check and make sure the tank is not vapor locked......take the cap off and see if it runs better.
If it starts and runs smooth it has good plugs...
If it runs....even slow then it is getting gas...
My guess is it is not able to suck gas at an adequate rate to keep the rpms up. Your tank should have a vapor screw or plug that allows adequate air movement. If not you need a different fuel cap. easy to check by just taking the gas cap off the tank and running the motor.
:twocents:
Post by: sled on August 09, 2013, 05:49:27 PM
Post by: Rick on August 09, 2013, 06:14:40 PM
I’m thinking you have other problems. 32:1 is not all that rich to cause fouling. Break in procedures call for 25:1 for awhile and that doesn’t cause the problems you are describing.
In a gallon of gas,the difference between 32:1 and 50:1 is less than 1.5oz of oil.
Absolutely not enough difference to foul a plug.
Post by: DoubleJ on August 09, 2013, 10:27:47 PM
Post by: jay.sharkbait on August 09, 2013, 10:30:06 PM
Post by: DoubleJ on August 09, 2013, 10:39:42 PM
Post by: philepe on August 10, 2013, 08:51:47 PM
This causes such a high vacuum it will unclog restrictions in carbs and fix problems sometimes. Beware if you let the motor die it will be hard to start again because choking the motor causes it to go very rich!!!!
Post by: BigGoonTuna on August 11, 2013, 08:49:36 AM
my guess would be that there is a piece of debris lodged in the main jet. motor runs fine until you start opening the throttle(idle passages clear), then it starts going lean. i would not keep running a motor in that condition, since it's leaning out, you run the risk of burning up a piston.