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Poor running below 2000 rpm
Moderators: KeithZ1R, chrisu, paul doran, Taffus
If its the air pilot screw its inlet is from one of the small inlets from the carb air inlets(air filter side)spray some carb cleaner down it with screw an spring removed and see where it comes out if at all,like i said before No1 is usually the culprit as if it stand on the sidestand this is where the crud collects,bad news is sometimes these drilling become so clogged no amount of sonic cleaning etc will shift...Good luck
PAULJAC47,,,,,"She may not look like much, but she's got it where it counts, kid."
-Han Solo
You can't polish a turd, but you can roll it in glitter
Salad is what real food eats.
Anon
PUM 673
-Han Solo
You can't polish a turd, but you can roll it in glitter
Salad is what real food eats.
Anon
PUM 673
PAULJAC47 wrote:If its the air pilot screw its inlet is from one of the small inlets from the carb air inlets(air filter side)spray some carb cleaner down it with screw an spring removed and see where it comes out if at all,like i said before No1 is usually the culprit as if it stand on the sidestand this is where the crud collects,bad news is sometimes these drilling become so clogged no amount of sonic cleaning etc will shift...Good luck
OK - will strip it again & take a look
-
kev edwards
- Hardcore
- Posts: 1487
- Joined: 3rd Apr 2009
- Location: leverington UK
-
kev edwards
- Hardcore
- Posts: 1487
- Joined: 3rd Apr 2009
- Location: leverington UK
njwmct wrote:kev edwards wrote:Wind the tickover right up.
Got any more bright ideas ?!
No offence intended there NJWCMT, just a bit of humour, we have all had very similar problems wit these old zeds and more often than not it is fueling, chances are there is some varnish in the system on that carb, i believe the pilot circuit comes out just in front of the slide at the engine side with a very thin bit of wire yo may be able to push any rubbish backwards in the tract then blow it through, i have seen little bits of varnish stuck in these under magnification.
PAULJAC47 wrote:If its the air pilot screw its inlet is from one of the small inlets from the carb air inlets(air filter side)spray some carb cleaner down it with screw an spring removed and see where it comes out if at all,like i said before No1 is usually the culprit as if it stand on the sidestand this is where the crud collects,bad news is sometimes these drilling become so clogged no amount of sonic cleaning etc will shift...Good luck
Stripped the carbs out again this morning & all venturi are completely clear so at least that can be eliminated - but absolutely no idea where to go now
Hi does the bike still not respond when you turn mix screw?if not get hold of a Gunson colourtune at least you will be able to see the burn and get a good idea what is going on here,i had an A4 just like this at the end there was a score in the needle!!!
Just a thought if you start her from cold is the symtom the same when using some choke?as the choke by passes the pilot circuit ,just a thought!!!
Just a thought if you start her from cold is the symtom the same when using some choke?as the choke by passes the pilot circuit ,just a thought!!!
PAULJAC47,,,,,"She may not look like much, but she's got it where it counts, kid."
-Han Solo
You can't polish a turd, but you can roll it in glitter
Salad is what real food eats.
Anon
PUM 673
-Han Solo
You can't polish a turd, but you can roll it in glitter
Salad is what real food eats.
Anon
PUM 673
PAULJAC47 wrote:Hi does the bike still not respond when you turn mix screw?if not get hold of a Gunson colourtune at least you will be able to see the burn and get a good idea what is going on here,i had an A4 just like this at the end there was a score in the needle!!!
Just a thought if you start her from cold is the symtom the same when using some choke?as the choke by passes the pilot circuit ,just a thought!!!
Hi
I'll have to try it from cold with a little choke to see what happens
Still no response to the Pilot screw on No.1 - also although exhaust pipe on no1 is getting hot if you remove the plug cap it does'nt make any noticeable difference to the engine at tickover - so at tickover I think it's only firing properly on 2,3&4 - I have checked & there is a spark at no.1 plug.
z1bman wrote:did you try the test which i have put in a previous post
Forgot to mention - when I was removing plug caps while the bike was ticking over - when I pulled no.4 plug cap off I could feel electrical pulses through my arm - when I pulled no.1 cap off I could'nt feel anything so maybe there will be a weaker spark on no.1 ?
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