PDA

View Full Version : Off boost afr's


Nayls
15-08-2011, 22:55
How lean can these be??


very light throttle,say 2k rpm in 5th gear i get afr's of 15,sometimes 16! im pretty sure it would be ok? and cause no damage as it's off boost and seems to drive lovely but just thought i'd check?
jamie_clioGTT
15-08-2011, 23:16
sorry i cant help you but im very intrested in this as im due to get one. is there not anywhere that has abit of a guide for whats best under diffrent circumstances etc? be good if there was one.
Andrew Cooke
15-08-2011, 23:59
about mid 15's is what you want, much leaner and it'll be spluttering - economy mode :)
Nayls
16-08-2011, 10:10
about mid 15's is what you want, much leaner and it'll be spluttering - economy mode :)

Economy mode indeed :) just for when im travelling.

It's touched the 16's but still not spluttered though?

I know it probably would splutter but say it was in the 17's would it cause damage?? or just not drive as well?
djinuk
16-08-2011, 11:29
there some guides inthe articles section jamie :)
craig1988
16-08-2011, 16:51
So what should it be running on idle as mine is around 10 but I'm getting black smoke coming out the exhaust with a petrol smell but off boost mine is the same around 14/16. Sorry about the hijack
BluntyR5GTT
16-08-2011, 16:56
idle should be looking at 13.5 - 14.5 afr
Nayls
16-08-2011, 17:03
So what should it be running on idle as mine is around 10 but I'm getting black smoke coming out the exhaust with a petrol smell but off boost mine is the same around 14/16. Sorry about the hijack

thats mega rich!! i set mine to 14.0
craig1988
16-08-2011, 17:48
so whats the fix for this re-jetting ?
Nayls
16-08-2011, 18:15
so whats the fix for this re-jetting ?


No,on the drivers side of the carb you will find the mixture screw,it's in a tube like fitting (NOT the big brass screw) turn this until you get the mixture to high 13's low 14's
craig1988
16-08-2011, 18:22
brilliant cheers for the help :ashamed:
craig1988
16-08-2011, 19:36
I have adjusted this to no avail the reading never changed in the slightest
Fordy
16-08-2011, 19:40
take the screw all the way out... bet the screw is missing the tip common issue :)

on a side note

does anyone know where to buy new jets for these carbs? looking for either a new 120 main or a 115 main rather than soldering mine up
Big Steve - Raider
16-08-2011, 19:43
does anyone know where to buy new jets for these carbs? looking for either a new 120 main or a 115 main rather than soldering mine up

stuTHC has knocked a few up & will have some laying around.

PM Him ;)
craig1988
16-08-2011, 20:40
I did try but seems stuck will try again tomorrow. Main jets are available from Renault5spares.com
craig1988
17-08-2011, 17:04
Just had another go it's not coming out. Is there any way to get it out without taking the carb off?