Southern Hardstyle Posted February 22, 2010 Share Posted February 22, 2010 mrs. just procured a honda city for her uni/travels and has a rattling noise when you put your foot down, old owner said possible "pinking" anyway to confirm/deny this? Would it be easy enough to take it in for a tune to stop this? Cheers Quote Link to comment Share on other sites More sharing options...
fuel Posted February 22, 2010 Share Posted February 22, 2010 what fuel is she using? try put through a tank or two of 95 or even 98 and see if that reduces the amount of pinking, either that or retard the ignition timing until it stops pinking. the sound of pinking could best be described by a bunch of ball bearings rattling around in a can, it usually happens in the lower end of the rev range more so in higher gears while trying to accelerate. pinking could also be caused by incorrect heat range spark plugs (ie too hot), carbon build up in the combustion chamber creating hot spots or even oil consumption with the oil displacing the amount of air/fuel mix in the chamber effectively lowering the octane rating but you would notice lots of blue smoke if this were the case. Is it a CVCC motor? Quote Link to comment Share on other sites More sharing options...
fuel Posted February 22, 2010 Share Posted February 22, 2010 also it could even be big end bearings if its more of a pronounced rattle which usually happens in the 2000-4000rpm rev range under medium-moderate load. Quote Link to comment Share on other sites More sharing options...
Unclejake Posted February 22, 2010 Share Posted February 22, 2010 Or it could be the bearing at the base of the dizzy. Quote Link to comment Share on other sites More sharing options...
Southern Hardstyle Posted February 22, 2010 Author Share Posted February 22, 2010 what fuel is she using? try put through a tank or two of 95 or even 98 and see if that reduces the amount of pinking, either that or retard the ignition timing until it stops pinking.the sound of pinking could best be described by a bunch of ball bearings rattling around in a can, it usually happens in the lower end of the rev range more so in higher gears while trying to accelerate. pinking could also be caused by incorrect heat range spark plugs (ie too hot), carbon build up in the combustion chamber creating hot spots or even oil consumption with the oil displacing the amount of air/fuel mix in the chamber effectively lowering the octane rating but you would notice lots of blue smoke if this were the case. Is it a CVCC motor? she is using 91, it seems to be in the lower end of the rev range while tyring to acclerate in higher gears, wouldnt have a clue if it is a cvcc motor, is a 85' city e 1200cc if thats any help Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted February 22, 2010 Share Posted February 22, 2010 My dad has one of these and it pinks too. I wound the spark back a bit last time I used it, and it got a wee bit better. I never thought that it was peharps running too hot a spark plug. They are a turd of a motor, the cams are real bad to much off a cam lobe, and I think the old boys one might have a sick bearing, or a cracked slug. Keeps one trucking though. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.