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Post subject: pilot jets?
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griffinslc  Powerband Master Joined: 30 Oct 2006 Total posts: 681 Location: dublin,ireland |
ok,bike is a pig to start,have to hold the throttle wide open and kick for 10 mins,choke wont do anything.once it clears its throat it idles fine,but wont pull away from the lights for shit,have to slip the clutch like hell to get it moving.top end power is fine revs out no probs.could this be pilot jets?the bike gets unridden for few weeks at a time.wondering have the jets varnished?like i said,idles fine,good top end but wont start or pull away clean.
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Posted: Fri Jun 20, 2008 7:39 pm
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oldelsieboy All-gear Wheelie! Joined: 06 Jan 2004 Total posts: 1702 Location: Surrey |
Had a similar problem with my 4L0 (standard tune, fitted with Gibson pipes), started & idled OK but would not pull away clean without loads of clutch slip.
I upped the pilot jets one size & problem solved.
OEB
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Posted: Fri Jun 20, 2008 7:47 pm
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griffinslcPowerband Master Joined: 30 Oct 2006 Total posts: 681 Location: dublin,ireland |
bit more info,the engine was fully rebuilt and has 500 miles on it,it has been faultless up till a few eeks ago when the choke stopped working,cleaned the choke out completely to no avail,then only last week the sluggish pulling away started,if i can remember rightly i hadnt ridden the bike in 3 weeks up till last week.
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Posted: Fri Jun 20, 2008 7:51 pm
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BareAll-gear Wheelie! Joined: 28 Jan 2006 Total posts: 1908 Location: Vancouver Canada |
Perhaps some rust flakes or other sedimentary bits from the Tank found their way into the carb orifices..? Stock pilot jets seems to suit a pretty wide range of tunes.. besides if it was runni9ng happily before it's layaway.
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Posted: Sat Jun 21, 2008 3:11 am
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Post subject: Re: pilot jets?
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| Rich |
| griffinslc wrote: |
| ok,bike is a pig to start,have to hold the throttle wide open and kick for 10 mins,choke wont do anything. |
Not trying to sound patronising but I hope you know that the choke stops working when you open the throttle? Fuel is only pulled through the choke circuit while the throttle valve is closed. However, it does sound like bigger pilots will sort the problem 
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Posted: Sat Jun 21, 2008 10:50 am
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griffinslcPowerband Master Joined: 30 Oct 2006 Total posts: 681 Location: dublin,ireland |
not patronising rich,didnt know that .but stripped an cleaned the carbs for the umptheenth time today,installed inline fuel filters an a set of boyesens while i was at it,seemed to start ok but was raining so didnt wanna see how it rode till sunny.im on stock pilots right now and they didnt appear to be clogged at all.ill see after i ride it anyway,thanks for replies fellas
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Posted: Sat Jun 21, 2008 3:11 pm
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griffinslcPowerband Master Joined: 30 Oct 2006 Total posts: 681 Location: dublin,ireland |
ok,completely at a loss now,bike wont start off choke and still needs clutch slip to get away,after the work i did i havent a clue what it could be?someone must have an idea?
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Posted: Wed Jun 25, 2008 7:24 pm
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gary-rd-robbo![[RD/RZ Blood Donor]](../img/pipsvip.jpg "RD/RZ Blood Donor")
RD/RZ Blood Donor One-handed Stoppie! Joined: 07 Oct 2007 Total posts: 2311 |
might sound daft....float bowls reversed? or slides swapped over???
floats seem to be very easy common fault encountered by nearly every honest genuine forum memeber i am sure...the float for the choke has a tiny hole and pipe for the l/h carb for the choke mechanism to work.
gaz
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Posted: Wed Jun 25, 2008 8:28 pm
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Vindaloobeast Rear-wheel Steering! Joined: 25 Aug 2005 Total posts: 2623 Location: Gloucester |
| griffinslc wrote: |
| ok,completely at a loss now,bike wont start off choke and still needs clutch slip to get away,after the work i did i havent a clue what it could be?someone must have an idea? |
Check the clip hasnt come away from the needle in the carb slide..I know someone this happened to..
Also ensure the emulsion tube drillings are not clogged..it will present the same symptom..
Beast
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Posted: Wed Jun 25, 2008 8:41 pm
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griffinslcPowerband Master Joined: 30 Oct 2006 Total posts: 681 Location: dublin,ireland |
floats are matched,emulsion tubes are free,clips are fine aswell,wondering now is it a plug problem,as it went onto 1 cylinder last night,only put new set in about 300 miles ago.worth a try...
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Posted: Thu Jun 26, 2008 5:37 pm
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Post subject: pilot jets
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johnlcPowerband Master Joined: 14 Oct 2006 Total posts: 793 Location: John O'Groats |
Float valves or leaking fuel tap 
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Posted: Thu Jun 26, 2008 5:53 pm
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griffinslcPowerband Master Joined: 30 Oct 2006 Total posts: 681 Location: dublin,ireland |
um,feel bit dopey now,new set of plugs cleared it all up.plugs are mismatched colour tho which prob means sumthins runnin amiss somewhere....
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Posted: Sat Jun 28, 2008 1:48 pm
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