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Post by gonzalo on Jan 4, 2021 18:33:18 GMT -5
Hey all, so, as I've said in my previous post I've got my hads on a Peugeot Zenith with only 3000kms that has been sitting for 5 years.
So far I've drained her up, and filled her with new oil and gas. Opened the kickstart system and greased it up too. Havent had time to change the battery yet but will soon.
One thing that puzzles me is that if I try to start it (kickstart or starter motor using a battery) the system seems to be jammed. Doesnt crank. BUT if I remove the spark plug (zero compression?) both the starter motor and the kick start seem to work just fine, furthermore the piston slides nice and easily. This leads me to believe the must be a jammed valve....maybe the exhaust one? Any ideas?
Thanks!!
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Post by aeroxbud on Jan 4, 2021 19:46:46 GMT -5
That's a strange one. If it's a two stroke, it won't have an exhaust valve though. The exhaust might be blocked. Try removing it and see what happens. If nothing might be worth pulling the CVT cover. Then inspecting all the starter gear is ok. There is a one way clutch which might of jammed.
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Post by gonzalo on Jan 4, 2021 19:58:59 GMT -5
That's a strange one. If it's a two stroke, it won't have an exhaust valve though. Might be worth pulling the CVT cover. Then inspecting all the starter gear is ok. There is a one way clutch which might of jammed. Hey aeroxbud, thanks for your reply. What is strange to me is this, when I remove the spark plug (I decompress the cylinder) everything runs and for as long as I want. When I put it back on, I might even be able to do a couple of kicks (or cranks with the starter) and it's like it "builds pressure" and jams. Even more if I let it alone for 10-15 min it "unjams" and I can do it all over. Of course I can check the CVT but I feel that i never "get to that point", that I might be having a problem before it even starts into action. When I crank it with the spark plug out, it "spits" quite a bit of liquid, another theory I'm having is that there's too much oil/gas in the cylinder that it is taking up uncompressible space, ergo , increasing the compression to a dangerous point. I don't know if I've made myself clear, sorry, English isn't my first language. Thank you very much!
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Post by gonzalo on Jan 4, 2021 20:22:11 GMT -5
Wild theories part two: Might the exhaust be clogged somehow??
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Post by aeroxbud on Jan 5, 2021 6:14:31 GMT -5
That's what I thought too. Mice like to store things in exhausts.
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Post by gonzalo on Jan 5, 2021 6:56:01 GMT -5
That's what I thought too. Mice like to store things in exhausts. So I've just went and put a screwdriver through the exhaust exit and puched through what seemed to be grease+dirt. Long story short I it doesn't jam anymore.... doesn't start either but it's a step closer . I'll try and see how can I clean the complete exhaust just in case. I'll keep you posted, thanks a lot!
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Post by gonzalo on Jan 6, 2021 16:35:59 GMT -5
So after 24 hs filled with baking soda, the pipe seems to be clean enough.
I've noticed the mixture getting to the carburator was kind of oily so I decided to check the fuel circuit. Gald that I did, apparently this scooter has a fuel filter inside the fuel tank and it kind of melted away and clugged the fuel valve, so there was no way fuel could come through it.
Spare parts for this scoot are almost impossible to get here in Argentina so I'm thinking of a way to repair/replace what i've got.
Side note the fuel level system was also heavily corroted so I took it out and put it in vinegar in hopes to remove some of the rust...
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Post by aeroxbud on Jan 6, 2021 16:44:02 GMT -5
Its likely to have an engine the same, or similar to the speedfight. But other parts might prove more difficult to get. Post a picture of any parts you need.
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Post by gonzalo on Jan 6, 2021 16:49:23 GMT -5
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Post by aeroxbud on Jan 6, 2021 17:57:24 GMT -5
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Post by gonzalo on Jan 6, 2021 18:49:28 GMT -5
Thanks Paul, yeah, for what I see the engine is the same as the speedfight but again, here is very hard to get parts (even if you bring them yourself). Guess I'm going to the local parts store tomorrow and see what I can find.... At least I think this issue can be solved with some piping and creativity I'll keep you posted, cheers mate
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Post by gonzalo on Jan 7, 2021 19:09:07 GMT -5
So, 24 hs later and a dip in vinegar and presto! the fuel buoy looks like new (and works too). As for the fuel pump, looks new but was still clogged, so I put it in caustic soda for a couple of hours (I figured it couldn't get any worse). After that (and cleaning it) I blew into the hose that controls the diaphragm and heard a clicking noise so I will assume it works. A little bit of creativity was needed since I didn't have the fuel filter anymore so I used a little piece of tubing (no filter) and will add an inline generic filter later to the hose. Guess that's it for today, will do some testing tomorrow. Cheers
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Post by aeroxbud on Jan 7, 2021 19:17:01 GMT -5
That's great you saved them. By adding an inline filter it won't matter that it's missing from the petcock. And with an old tank, probably a good idea anyway.
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Post by gonzalo on Jan 9, 2021 16:55:44 GMT -5
Hey all, well I managed to make the petcock work (I replaced the fuel line with a transparent one so I can see it work) and put it back together. Ive been kickin it all afternoon, trying to start it with no results. Ive been fiddling with the air screw in the carb and sometimes I can get it to "run" ploping for a few seconds and then it dies. My conclussion is that if I can get it to "plop" even for a few times, I must have a correct fuel feed, I must have compression and the sparkplug should be working (I tested it and seems to work ok). So I guess all comes down to the carb..... Have you guys got any pointers? (Its my first time tuning an engine) Ive checked the troubleshooting in the technical area but cant seem to find an answer
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Post by pinkscoot on Jan 9, 2021 18:17:08 GMT -5
Good fix. You're getting there. Did you try Brents no start troubleshooting guide here. If you could tell us more about what is in the carb, jets, needle and slide it would help us to understand where you are. Have you tried starting fluid? If that doesn't start it then you can rule out fuel.
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