Question about 2005 Gilera Nexus 500

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Gilera nexus, non starter

Gilera nexus 500, wont run cleanly, cuts out when throttle twisted, backfires when attempt to restart, now wont run at all, diagnostic system will not show problem, plug, hv lead, and throttle body replaced, still no start, wondering about fuel inj system, electrical systems,help

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6 Suggested Answers

ga_drifter
  • 36 Answers

SOURCE: Do you need to remove

no absolutely not. you may have tight spaces to work in but do not remove the engine.

Posted on Jan 22, 2009

bunnydawg
  • 5158 Answers

SOURCE: Hi I am try to get a Dayco drive belt to replace

this page should help you

http://www.beedspeed.com/html-pages/DriveBeltChart.htm

Posted on Mar 07, 2009

  • 3567 Answers

SOURCE: My 1999 gilera runner 50cc cut out on me,now it won't start

Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it and clean it. With the gas valve turned off, does gas still get past the valve? If it does, then you need to replace the valve. Re-mount the bowl, ( not all bikes have a water trap bowl ). Always turn the gas off when not riding the bike. If the valve will not fully shut off the gas then a leak-down condition can occur and cause gas to get to the exhaust pipe.

Drain the carburetor. There should be a screw on the lower side of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. Install a new stock NGK spark plug and try to start the engine. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine.

Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the
carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Put the rest of the
carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. This process should get you back on the road.

Please rate this solution. Thanks!

Posted on Apr 28, 2009

  • 3 Answers

SOURCE: misfiring at speed on gilera 200 scooter

This sounds more like a lean fuel condition than ignition. If it was stored over the winter without the gas being drained or a fuel stabilizer being added, you'll likely have varnish build-up in the fuel system that is not allowing sufficient fuel flow.  If your engine is fuel injected, it's likely your injector is partially clogged.  If it's carbureted, your carb jets may be partially clogged or your carb float may be sticking and not allowing the needle valve to fully open.  Fill the gas tank with fresh gasoline, but leave enough room for a can of Sea Foam.  The Sea Foam may be able to break up the deposits and allow fuel to flow again.  However, there's no guarantee and the fuel system may have to be disassembled to be cleaned.

Posted on May 05, 2009

vinzen
  • 217 Answers

SOURCE: i have a gilera runner 50 sp and it wont start

Has it been laid up for months? Did you leave any gas in it untreated? You may need to boil out the gas tank . Try a carb cleaner first that you add to the gas.Check the plugs.Are they black/oily (too rich / worn ring), Tan ( correct ).they tell a lot about the condition of the engine. Good Luck

Posted on Sep 15, 2009

  • 653 Answers

SOURCE: which oil to use gilera nexus 500 2004

Standard bike oil use SAE10W/40 or SAE5W/30 Castrol, PenRay, Motul, etc Use SAE70W90 single grade. Good enough free advise?

Posted on May 04, 2010

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Do you need to remove the engine to do a valve adjustment on the Gilera Nexus 500.


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