Simple carburettor advice?
Posted: Mon Nov 14, 2005 1:29 pm
Since buying my +2 a couple of months ago, I have been avidly reading every word of Keith's (and other's) posts on this forum about how to tune the carbs. I have barely understood a word of it , but was until today satisfied that my car was well tuned and in good shape. The previous owner had fairly recently taken the car on a rolling road dyno and managed to get 100bhp at the wheels. So for me at the time, ignorance was bliss.
Unfortunately I had a problem on a longish journey yesterday that both myself and the RAC man thought could be carb related... turns out it wasn't and the actual culprit was the electric fuel pump - this problem is now rectified, but not before the RAC man had adjusted several things on the carbs. I wasn't able to see all of what he was doing as he kept needing me to turn the ignition etc...
The eventual outcome was that he got the car running again, but it does seem to be lacking a bit of the power it had before, and certainly sounds different.
So... my questions are these: Is there anyway I can sort this at home? (I've read the relevant workshop manual section, but it doesn't sound much more accurate than what the RAC man did) What equipment will I need? Is there a book that explains this in very simple language? (I am aware of the 'how to tune Weber's' book, but worried it will be way over my head like all the discussions on here about carbs) Am I best off leaving it (after all, it is running) and waiting until I can save the money to go back on a rolling road again? Or would my money be better spent starting a fund to buy Keith a plane ticket to come over to the UK for a trip to tune mine and all other contributer's carbs? (Go on Keith, you know you want to! )
Set-up of the car is as follows: Weber 40s with K&N filters, big-valve conversion. Lumenition ignition with sports coil... don't know if you need any other details?
Anyone who can point me in the right direction would be a great help, and if anyone does have the patience to write an idiots guide to simple carb tuning I will be very grateful.
Rick
Unfortunately I had a problem on a longish journey yesterday that both myself and the RAC man thought could be carb related... turns out it wasn't and the actual culprit was the electric fuel pump - this problem is now rectified, but not before the RAC man had adjusted several things on the carbs. I wasn't able to see all of what he was doing as he kept needing me to turn the ignition etc...
The eventual outcome was that he got the car running again, but it does seem to be lacking a bit of the power it had before, and certainly sounds different.
So... my questions are these: Is there anyway I can sort this at home? (I've read the relevant workshop manual section, but it doesn't sound much more accurate than what the RAC man did) What equipment will I need? Is there a book that explains this in very simple language? (I am aware of the 'how to tune Weber's' book, but worried it will be way over my head like all the discussions on here about carbs) Am I best off leaving it (after all, it is running) and waiting until I can save the money to go back on a rolling road again? Or would my money be better spent starting a fund to buy Keith a plane ticket to come over to the UK for a trip to tune mine and all other contributer's carbs? (Go on Keith, you know you want to! )
Set-up of the car is as follows: Weber 40s with K&N filters, big-valve conversion. Lumenition ignition with sports coil... don't know if you need any other details?
Anyone who can point me in the right direction would be a great help, and if anyone does have the patience to write an idiots guide to simple carb tuning I will be very grateful.
Rick