100% Biker & Trike Magazine Forums

Go Back   100% Biker & Trike Magazine Forums > 100% Biker > Biker Chat

Notices

Reply
 
Thread Tools Display Modes
  #1  
Old 11-04-2009, 11:27 PM
dracken1's Avatar
dracken1 dracken1 is offline
Talk, Type, Breath, Talk, Type, Breath....
 
Join Date: Apr 2004
Location: west mid wales
Posts: 4,493
Default somtimes all you need are eyes..

had a very good looking zx600 1999 vintage in.
he bought it off ebay. and felt that it wasn't quite right.

it has a misfire i told him. not a fully flrdged only running on 3 misfire but a constant roughness and vibration.

special tool number 1. a digital thermal sensor.
you point it at something and it tells you the temperature. number 1 was running 100 degrees cooler than the other 3.

so changed number 1 plug
and fitted special tool number 2. a remote fuel tank, used when balancing carbs.

no change.
so changed spark plug lead....no change.
special tool number 3 multimeter to test coil... that was fine.

special tool number 4 compression tester... all cylinder within 10 psi of each other at 180 psi.

specal tool number 5 carb balance guages number 1 very very slightly below other 3. normally if the engine was fine you would not even alter it.

rocker cover off (the bolts were loose) check shims. everything fine.

carbs off to check for air leak. nothing.

looked down the inlet port at both number 1's valves. and jabbed at the starter. and low and behold bubbles coming past one of the inlets valve seats.

so thats it. just a small amount of compression blowing back, just enough to weaken the mixture of that cylinder and cause the miss.

so all it needed was eyes. not loads of special equipment.
going to head butt a door frame now. cos i pissed off
Reply With Quote
  #2  
Old 12-04-2009, 02:21 AM
trikerdrew's Avatar
trikerdrew trikerdrew is offline
It's about time I shut the fuck up!
 
Join Date: Dec 2004
Location: leicester
Posts: 1,994
Default bleedin' typical

Next time, it'll be some sneaky wee gremlin doing something else.

Least you found it.That's what counts.

drew
__________________
"All I learnt at school was how to bend and break the rules",Madness
Reply With Quote
  #3  
Old 12-04-2009, 06:15 AM
TektroG's Avatar
TektroG TektroG is offline
Type like a Twat Me...
 
Join Date: Sep 2004
Location: Toulouse, France
Posts: 777
Default

Sounds like a good find to me. Think I might have gone for the compression test first. Its when you haven't got the special tools and you go out and buy em, only to find it wasn't what you suspected, that you have a problem. Could do with a wee tank for carb balancing meself. Upside down washing up bottle used to be the way!
Reply With Quote
  #4  
Old 12-04-2009, 07:25 AM
dubmeister's Avatar
dubmeister dubmeister is offline
Chatter Box
 
Join Date: Mar 2008
Location: Carlisle
Posts: 383
Default

Got my small tank off a guy at the local tip ,off a petrol lawnmower cost 0.00p
Reply With Quote
  #5  
Old 12-04-2009, 09:56 AM
teltwosheds teltwosheds is offline
Type like a Twat Me...
 
Join Date: Nov 2005
Location: wales
Posts: 904
Default

specialist tools dont you just love em .just goes to show you cant beat good old human sencess . i got an old saddle tank off of a rotorvator from the tip years ago for my header.
__________________
Think I'll go sit in the corner an stick my foot in me gob
Reply With Quote
  #6  
Old 13-04-2009, 07:44 PM
harry's Avatar
harry harry is offline
Techno Guru! He's Good! He Knows Everyfink!
 
Join Date: May 2005
Location: Taunton
Posts: 3,399
Default sometimes all you need is eyes

Hi Dracken I know how you feel. Couple of years ago the Paneuro stopped charging. So out comes the multi meter, I know I'm good at this so no problem.

Checked the charging circuit and found the reg/rec to be less than usefull.

Unbolted the unit and guess what it's got a 25mm hole in the back it looks like the exit wound from a gunshot.

No-one thought I was clever to have diagnosed that LOL
Reply With Quote
  #7  
Old 13-04-2009, 09:02 PM
kiffer38 kiffer38 is offline
It's about time I shut the fuck up!
 
Join Date: Feb 2006
Posts: 1,532
Default

at least you didnt have a brass screw stuck in it, like mine did !
Reply With Quote
  #8  
Old 14-04-2009, 05:57 AM
pyro pyro is offline
Talk, Type, Breath, Talk, Type, Breath....
 
Join Date: Mar 2005
Location: Winchelsea!
Posts: 5,279
Default

Quote:
Originally Posted by kiffer38 View Post
at least you didnt have a brass screw stuck in it, like mine did !
That happened to my Scimitar, butterfly screw dropped into the engine from the webber, it got jammed under the inlet valve.
__________________
Motorsickle!!!

Free the binary 10
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 12:06 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.