Par Car problems

Mwood

I am new to this but here goes.
I kind of fell into this bussiness I live on a golf course and have some mechanical ability so everyone brings there problems to me.
The latest on is a 1991 Par car 2 cycle at first is would not run.
I checked compression 120 forward and reverse. the fuel system didn't seem to be very good so I bought a pump and it did not improve. Cleaned the lines and the carb. still no improvement. Then a friend told me about a old rupp they had that when ever the crank seals went out it would not run. So I took the motor out and sure enough both the seals were shot. I have replaced them and have it back in the cart. I set the timing acording the the book changed the spark plug and replaced the gas (just because it smelled old)
It will run but not like I would expect.
It seems like when it warms up it keeps losing power.
My rpm tack says it is running about 3000 rpm (no governer on the unit) and I checked the timing with a light looks good
Now I have removed the muffler. It seems to run much better.
The hand tach says that it is running about 4000 rpm but it is to loud to take out for a test drive.
I would replace the muffler if I could find one but I have not had any luck if finding one on the internet so far.
I have thought about cutting it in half to clean it out if that would do it.
I heard once of burning it on a grill to burn it out?
I am not sure if I am on the right track or not?
M. Wood

BGW

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rusty

Welcome to the forum Mwood.......................

Someone will be with you soon..........................

Mwood

what is your definition of soon?

spriddle

It does sound like the muffler is clogged up. Most Yamaha 2 stroke owners with this problem, pull the muffler and burn them off by placing it in a open fire. I'm not familiar with the Par cars at all, so I'm just making a guess in comparison to the Yamaha 2 strokes.

Mwood

Thanks for the feed back.
I did get in touch with a dealer and they said the muffler is $503.00. Which I beleive is a little out of line. It is also a retrofit. I am thinking of cutting it open clean it out then weld it back together. I am just not sure I can get it hot enough to get everything out of the inside? Last option is probably a 4" pipe with plates welded on the ends.
I will probably cut the old one apart tomarrow.
Thanks again for the infomation.

tew45

Did you cut the muffler and did it help?

Mwood

yes I did I cut it at the seam and removed 2 baffles and drilled a 1/2" hole all the way through the center.
It looked very dirty but I could not see all the baffles I would think that there is a need for some back pressure.
It does run considerably better but not as good as I would like.

I am thinking that the muffler being pluged is probably what took out the crank seals.
I think it is probably as good as it can be.
not sure of hp but probably only 8 hp if that.

tew45

That may be all it will do. Mine will run 17 to 20 mph. The engine is around 8hp.
Look on u-tube for a Harley muffler replacement video. I have seen one before and they were using a stinger off of a dirt bike and it worked very well!

Lontex

Hi Everybody. this is my first post. I am having some problems MWOOD is having. I have a Par Car 1991.in order to get the cart to fire up I have to put Fuel into the line, then it will run for about 1/4 of a mile then die. I waite about 1 minute and fire it up and of I go for another 1/4-1/2 mile and it dies again. other than using a sledge hammer could some one please help. thanks.


John T.

TheNewGuy

Sounds like the fuel pump.

Ron


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