1988 2 Stroke No Start, low compression-please advise

[ChevroletR]

Hello folks,

Working on an 88 two stroke EZ Go Standard golf car my great grandmother had that's had a hard life. We were driving it and it cut out/stalled a few times. It seemed to be low on gas (although we still saw gas in the tank) and it stalled and wouldn't restart this time. We flat towed it back with a fourwheeler 200 yards tops and went to do the usual checks and found nothing.

It has fuel to the pump, from the pump and spark at the plug. Checked compression and it was 30-35psi. Put air in the cylinder and it seemed to come out of the exhaust, but that depends on where the piston is in the cylinder, which I suppose I should had made sure it was on TDC like a car, right?

Did some homework and I guess the compression is waaaaay to low. I heard the crank seals blow out of these and took the front fan and cover off the engine to find a seal intact and the rear seal at the belt pulley seems to be good as well. (I have pictures if anybody would like to see)

What I was wondering is what is a common problem with these? Where else would I be loosing compression (piston, valves obviously but anything typical?) I'm good with four stroke engines, but know little about two strokes. Does this had a reed valve? How and can I check this? Anyone offering advice or something else to check here is greatly appreciated.

Thank you in advance

[madoc1]

your motor has no regular valves, just reed valves under the manifold. i'm afraid with that low compression you are going to have to pull the engine and take off the head and cylinder to see what you have. not hard to rebuld and there are kits available from the sponsors that include what you will need.
are you still using the oil injection? if so you should consider losing it and premixing your gas and oil. let us know what you find.
oh, and welcome!

[Dave Box]

It is conceivable that you compression is leaking past a defective head gasket however it is far more likely that the cylinder is just worn out. The good news is that the top end repair kit (which includes ; gaskets, cylinder, piston, rings, pins and clips) is less than $200.

You will need to remove the engine, which is not hard, and after that is really is just about an hour's job to rebuild. If you go this route I would earnestly recommend that you replace the crankshaft seals, they have a tremendous bearing on engine performance and at $3.50 each are are wise investment.

Dave

[doozerann]

I agree with Dave, I did a top end rebuild on my 85 and it run so fast i had to tune the carb back so the kids could ride it.

[essness]

Agreed. If you pull the engine, do the crank seals.

I pulled just the cylinder on a 89 a couple years ago and found this,





I bought and installed the top end kit and the thig screamed!

I was fortunate to have a lift to work with so I didnt have to bend over the thing the entire time. So, I decided to just pull the top end.

[ChevroletR]

Wow! Thanks for those pics. I wonder if something like that happened. Under $200 bucks huh? I think we could do that, no problem. I guess this is the next step then, thanks. I could probably find it on this site myself, but where would I go for this top end kit?

Thanks again

[Dave Box]

Well my fovorite sponsor Everything Carts does not carry the top end kit (although it does carry the full engine kit) which can be found here.
http://www.everythingcarts.com/p-266...build-kit.aspx
If you Google "2PG engine rebuild kit" you will find a ton of them, in fact they are on Ebay at $176. Don't worry about buying cheap as they are all made by the same company in India.
There is also a useful set of videos on rebuilding your engine. Go to youtube and search "donyboy73 golf cart" He does a nice job although at the end of video 2 he makes a bad mistake and installs the piston in backwards. He corrects this in video 3 but you know that he got the engine in, found that it barely ran and spent days working out why.
Anyway, good luck, if you run into problems removing the clutch to change the seal (and please, please change the thing) shout out. Everyone is here to help.
Dave

[ChevroletR]

Thanks!

[doozerann]

essness, the whole skirt was busted off mine, wish i had some pics to show.

[madoc1]

this was ours. i assume the oil injection went out. all it needed was a top end and 3 large bearings. and a good cleaning, fragments everywhere. amazingly it still had 30# compression.