92 3PG Top End Rebuild - Where to Begin?

[Monsterezgokid]

One last suggestion..

Use a high grade 2 stroke oil. Ive seen the lower grades cause the float needle to stick and the cart will run for 1 min, then die, then you will have to dissasemble the carb and unstick the float needle.

[Workstead]

Originally Posted by Monsterezgokid

One last suggestion..

Use a high grade 2 stroke oil. Ive seen the lower grades cause the float needle to stick and the cart will run for 1 min, then die, then you will have to dissasemble the carb and unstick the float needle.

Interesting that you should mention that. I have had to clean my choke every 3 or 4 months. It was hard starting and cleaning the carb would fix it. I'm still using the oil that was in it when I bought it about 18 months ago.. I have no idea what it is. I do know it is clean and slippery :-)

The last time I took the carb off to clean it I didn't tighten the air hose and when the grandkids were driving in a dusty and grassy field it stopped running and I haven't been able to start it since. I noticed that the intake hose was off and the carb had dust and grass clippings in it's opening. I checked the compression and it was less than 40 pounds. I'm assuming that's what killed the engine. I can't even get any gas flow when cranking the engine.New and high quality oil from now on. What do you recommend?

Clem

[Monsterezgokid]

I use redline synthetic 2 stroke oil, but any type of premium 2 stroke oil you should be ok.

[csason]

That sure don't sound too good to me..

If that engine ran with no air filtration, and dirt and such being inhaled
all the time, there is no telling what you're going to run into in the top
of that motor.
Your pistons could be pretty messed up.

On the bright side, if you are reasonably mechanically inclined, and
take notes, mark things, and keep everything well ordered, you should be able to do a rebuild, but that's your decision.

Originally Posted by Workstead

Interesting that you should mention that. I have had to clean my choke every 3 or 4 months. It was hard starting and cleaning the carb would fix it. I'm still using the oil that was in it when I bought it about 18 months ago.. I have no idea what it is. I do know it is clean and slippery :-)

The last time I took the carb off to clean it I didn't tighten the air hose and when the grandkids were driving in a dusty and grassy field it stopped running and I haven't been able to start it since. I noticed that the intake hose was off and the carb had dust and grass clippings in it's opening. I checked the compression and it was less than 40 pounds. I'm assuming that's what killed the engine. I can't even get any gas flow when cranking the engine.New and high quality oil from now on. What do you recommend?

Clem

[Workstead]

Originally Posted by csason

That sure don't sound too good to me..

If that engine ran with no air filtration, and dirt and such being inhaled
all the time, there is no telling what you're going to run into in the top
of that motor.
Your pistons could be pretty messed up.

On the bright side, if you are reasonably mechanically inclined, and
take notes, mark things, and keep everything well ordered, you should be able to do a rebuild, but that's your decision.

I've gotten some good advice here and I'm going to do it. I'm usually very good at doing something, the second time.

This time I am doing my homework and will do it right the first time, with a little (lot) of help from my new friends.

Clem

[Workstead]

UPDATE.

I finally have my engine torn down and I learned a lot on this, my first engine work of any kind. Thanks to all who have contributed to my mechanical education.

The attached pictures show a "little" scoring on my piston. It looks like I wasn't getting much (any) lubrication from the deep gouges on the aluminum piston.

I was thinking of eliminating the automatic oiler, and now I KNOW I will eliminate it and mix the oil with the gas.

Clem

[Workstead]

Another question.

Is there supposed to be any oil in the crank case of the 3PG engine?

There is some oil in mine and I didn't think that 2 cycle engines required oil in the crankcase to lubricate the engine.

Thanks,

Clem

[Monsterezgokid]

Wow man, thats bad ive never seen one in that condition.. how is the jug, because if the pistion is any indication of what the jug might look like.. an overboar is definetly required, no simple hone and re-ring job.

Originally Posted by Workstead

Another question.

Is there supposed to be any oil in the crank case of the 3PG engine?

There is some oil in mine and I didn't think that 2 cycle engines required oil in the crankcase to lubricate the engine.

Thanks,

Clem

Chances are thats just oil from the fuel that evaporated, or just excess oil floating around.. No theres no oil required in the crankcase.. With that said though.. when you are putting the engine back together, make sure you well oil all the bearings, cylinder..and everything with 2 stroke oil.. Helps pervent a dry start

Also if i remeber correctly, in the manual it says to pre oil the base gasket before assembly.

[Chuckwag]

Hey Clem,

I just found your thread about the 3pg rebuild...how's it going?

Chuckwag