Tri-z Tubing Hook Up- no compression

[TrI-ZRidinn]

Hey, i need a little help. I just had my 3 wheeler apart, then started putting it back together. Now when i kick it over, it is not as loud as it was before, (like theres not as much compression). I just put new piston rings in it, and before i started taking bike apart, it ran fine. I didnt mess with the motor at all. I think i might have some tubes hooked up wrong. If you have any close up picks about where all the tubes go, (carb tubes, top end motor tube etc..) thx

[Tri-Z Pilot]

Your tubes are going to have no affect on compression. You either installed the piston rings,headgasket,base gasket, or something else wrong, or your head or cylinder could be warped. Is everything torqued down? Head,sparkplug,cylinder? Did you bore or hone the cylinder? Maybe you have the wrong piston size?

[TrI-ZRidinn]

It all ran before i started taking it apart, i didnt take any of the motor apart. All i took off was the rear axle (for new bearings) gas tank, swing arm, shock, carb..But nothing from motor...I dont understand...

[Tri-Z Pilot]

Maybe your crank seals are shot, maybe you should consider buying a leak down tester.

[TrI-ZRidinn]

The thing is, it RAN before i took it aprt. So it SHOULD run now. I didnt mess with any of the motor. Everrything is fine....

[200xman]

Your tubes are going to have no affect on compression.

I'll have to disagree on that. I was riding Mike from LI's Tri-Z and the fitting that runs the fuel pump on the left side of the jug popped out. The bike died instantly and felt like it had no compression. If that hose is off or routed wrong I could see it having low compression.

[TrI-ZRidinn]

Thank you tri-zpilot. That same exact thing happend to me.. But the hose goes from..the top end of the motor to the left side of the fuel pump?

[Tri-Z Pilot]

I wouldnt think that would have anything to do with compression, it just sends out a pulse, or is it vaccum? Now I am confused, if it ran off of a vaccum, I could see there being less compression, but I thought it generated a pulse. Maybe you "washed out the cylinder" as 86 water pumper was explaining to me earlier, if there is no oil in the jug, (oil/ gas mixture), you loose compression, till you put the lubrication back in the system, are you kicking it over to just see the compression, i.e, you have no fuel going to the cylinder?

[Tri-Z Pilot]

If you are getting fuel to the cylinder, maybe you are flooding it, go check out the post, "main jet confusion", timsr was discussing a no compression problem on his tri-z that was caused by exsessive fuel in the cylinder.

[TimSr]

The line going to the fuel pump is a vacuum line, and does not affect compression. If it comes off while running, and the cylinder completely burns dry it might feel that way. Dry rings on a dry cylinder leak compression a lot. So does a flooded cylinder. If you just rebuilt it, and its not all wet, put a few drops of oil in the spark plug hole, and see if compression is suddenly restored. If it is, you probably have no problem other than getting that initial start to begin normalization in there. Also your rings will need to "seat" which is a fancy way of saying they need to wear down a little to match the cylinder wall.

[TrI-ZRidinn]

Ok. thx for the info guys.

I just hooked it all up... blew into the gas tank so it would force gas to the carb.... it worked..then i saw it was p*ssing gas out of the muffler so i flooded it. I have the right gas/oil ratio mixture into it, so thats fine. Now ill just work on the flooding problem...

Man i wish this didnt happen to me now...First winter and i cant ride it. Seeing i rebuilt it last winter, i wanted to have a lil fun this one. Oh well everything breaks down sometime..

Note: It might take me a lil longer to repair considering my dad is in jail for a lil and im 15...i know a lot about it and rebuilt it from top to bottom last winter by myself.. but will still take me time... Thanks for your input and info guys.

[TimSr]

Take the plug out, and the exhaust off, and just let it sit, and itll dry out.

[TRI-Zbrian]

if you need any parts pm me im parting my bike out

[TimSr]

if you need any parts pm me im parting my bike out

Yes, you've made that abundantly clear, several times. All members have access to the classifieds forum.

[TrI-ZRidinn]

I got the plug out, and exhaust off. I had to take exhaust off anyways because i gatta weld 2 brackets on it for springs and patch a hole. Ill let you know what happens when i put it back together.

[Tri-Z Pilot]

Alright, keep us informed.

[TrI-ZRidinn]

Well today.. my friend came over. We took off everything we needed to take off that was in way of getting top end out. Took top end off. Noticed the cylinder has a wear mark, and the bottom piston ring is worn down in 1 spot. Not what i wanted to see....Really dont have the money to buy a new piston..Well thx for all the info guys. Guess when i checked the rings the first time, i didnt see the bottom ring.

If anyone has a good condition piston for sale. Reply and tell me how much u want for it. I live in NY.

[hondatrikesrule22]

The piston you do get should have very few minutes on it.I don't think I would even do that.Because you usually need a bore <A TITLE="Click for more information about job" STYLE="text-decoration: none; border-bottom: medium solid green;" HREF="http://search.targetwords.com/u.search?x=5977|1||||job|AA1VDw">job</A> to match the piston.What I'm saying is it could get ugly.The wear you noticied was normal wear :shock: . Not trying to be an ass or anything, just my 2 cents ;) .

[TimSr]

Im confused to whether or not you installed new rings on this to begin with. Its hard to know without seeing it, but if you put in new rings, and one is worn in one spot, my guess would be that upon reassembly the rings were not aligned with the little pin in the ring groove on the piston. If the scuff marks on the piston are light and arent too bad, you may be okay to use it. YOu dont want to reuse a ring witha worn spot. Since it sounds like the cylinder is scored anyways, and you dont really have much to lose. Ultimately the correct fix is a bore job, piston and rings at around $200, but if money is tight, you might squeeze a few more rides out of the current top end.

[TrI-ZRidinn]

No i cant get any rides out of it. The piston bottom ring is worn bad. I did install NEW rings last winter.. I bought them off of DennisKirk.com my guess is the oil and gas mixture was maybe too lean some times. I dunno...This pissed me off bad. Untill i can get the money to do this, ill be working on my 1974 arctic cat panther Lol, Its a P.O.S. But hey i got 3 Sh*t Part sleds for $30. The panther was all complete to.