Question about Sport & Outdoor - Others
Hi,my name is ed.from cape breton n.s.bought my son a 250cc 4 stroke dirt bike from giovanni.it was brand new when i got it and i was wondering if the valves have to be adjusted after so many hours of using it.there is a tapping noise coming out of it and it sounds like valves to me but i am no mechanic.sounds like it's in the top end.power and reliability seem to still be there though.any help would be great thankyou.
This might be obvious but I would change the oil and replace it with a high quality fully synthetic oil. If the bike was run low on oil or if the engine became super heated the viscosity of the existing oil is shot. I would also make sure the cooling fins on the head is clear of any mud or crud.Check the cooling fins that are under any type of cover, I have had mice pack these areas full of stuff that has caused overheating. Generally I would be sure that the bike is runnng at the correct temperature before taking anything apart such as setting the valves. When an engine gets hotter than it should be, the oil thins and this can cause knocking. Good Luck:)
Posted on Feb 18, 2010
Hello adj your valves to spec
Posted on Nov 25, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Nov 12, 2010 | kawasaki Full Suspension Mountain Bike Men
Aug 25, 2010 | Reebok New York Giants Eli Manning Jersey
May 03, 2010 | kawasaki Full Suspension Mountain Bike Men
Feb 06, 2010 | kawasaki Full Suspension Mountain Bike Men
Aug 15, 2009 | Sport & Outdoor - Others
Jul 27, 2009 | Mini Motorized Bike
Oct 11, 2008 | Sport & Outdoor - Others
151 people viewed this question
Usually answered in minutes!