Starting when cold

BR4DLS · Post by **BR4DLS** » Thu Oct 20, 2005 1:18 am

Hi im new to the site and I think this site is a great resource of info for the zxr.
My problem it ive had my zxr afew weeks and now when I start it and ride about 800m white/blue/black ish smoke starts comming out the exhaust but the strange this is after the bike is warm it dosent smoke at all, can anyone help??, also how do I adjust the A/F ratio cause the ZXR is using heaps of fuel, I get approx 150km to 15L of petrol and this is just crusing. Thanks for your help

Post by **masterofinsanity** » Thu Oct 20, 2005 8:45 am

usually if it smokes a little on start up i think it means your valve seals have had it, so any oil seeps into the barrels and gets burnt when you fire it up.

BR4DLS · Post by **BR4DLS** » Thu Oct 20, 2005 11:47 am

The really strange thing is it will start and not smoke at all its only after riding it abit it smokes then it stops smoking again

RedexRobB · Post by **RedexRobB** » Thu Oct 20, 2005 3:40 pm

Yeah i have the same problem on my XJR400, it barely smokes when i start it and let it warm up, but soon as you put the engine under load its smokes like a bitch!

But yes it is the valve guide seals that cause this problem, how many miles has the bike done? its either done a fair few or its been thrashed from cold all its life.

BR4DLS · Post by **BR4DLS** » Sun Oct 23, 2005 7:43 am

Its only done 14000 miles, but I think someone has tampered with the speedo cause its 15 years old and it has abit of wear on it. Is it a major to fix?, this is the first motor bike I have owned but ive replaced motors in cars before so im hoping to do most of the work myself

RedexRobB · Post by **RedexRobB** » Sun Oct 23, 2005 5:37 pm

If youve got experience and the tools then it shouldnt be too hard, youll be needing a manual tho for the torque settings which available on this site. As far as i know its a case of taking the head off, removing the valves and then putting in new seals.