Carb Balancing

[A17YOB]

ok i have had a piece of hose in each trumpet

 

we'll call the carbs trumpets 1/2/3/4 starting from nosecone end.

 

 

ok

 

no 1. no noticable weird stuff slight drumming occasionally

no 2. distinct drumming sound like a tight drum being hit in time with firing

no 3. nice and smooth

no 4. nice and smooth

 

now the reason i fitted a weber linkage was because the old one snapped and the whole butterfly assembly spun right round inside.

 

i guess the carbs are knackered. oh and it wont run that well under load like its to do with fueling not eletrical.

 

[Peter Bell]

Why are the carbs shot? sounds as though you may just need to adjust them correctly so they are equal. start with the connector link between the two carbs making sure the butterflys on each of the carbs is opening together. (from what you have said it sounds as thought front carb is not in sinc with the rear) Then get the hose out again and when it is ticking over you need to adjust the throttle stops so the hissing noise is the same on each carb. Was it running ok before?

Peter

[A17YOB]

yeah was running ok before just seems to be running on 3 almost.

 

ill give the balance bar another go....

[Guest Ian & Carole]

Hi Ed

 

I agree with peters comment,

listen to 1 & 3 inlets to start with then 2 & 4 make sure they are all sucking with the same strength

If you have almost no suck on one of them then it is hardly open and that could be half your problem.

Ian J

[A17YOB]

ok great guys done the balancing fine all sound the same pitch ect now