If you've weakened the mixture then the flame rate of the petrol /air burn will increase and in turn cause the engine to run hotter
If you've richened the mixture you'll be slowing the flame rate potentially over heating your exhaust valve because the fuel charge will still be burning as the exhaust valve opens
Will you be able to tell either of these things are happening? Probably not. How are you going to set the two screws back to where they were without a gas analyzer?
2ltr Aircooled CU with twin Solex's & originally a 009 dizzie, but now back to standard.
Set the mixture screws back to 2 1/2 turns out and adjust the idle using the right screw. Take the van for a 15-20 minute run and take the adjustment tools with you. If you try adjusting the idle without getting the engine up to operating temperature first you won't get it set right anyway. See if you can borrow a tacho and set the idle to 800-850 RPM. Just setting it to stop the engine stalling means it's probably set too high anyway.
2ltr Aircooled CU with twin Solex's & originally a 009 dizzie, but now back to standard.
Set the mixture screws back to 2 1/2 turns out and adjust the idle using the right screw. Take the van for a 15-20 minute run and take the adjustment tools with you. If you try adjusting the idle without getting the engine up to operating temperature first you won't get it set right anyway. See if you can borrow a tacho and set the idle to 800-850 RPM. Just setting it to stop the engine stalling means it's probably set too high anyway.
should engine be off when setting mixture screws back ?
you say adjust the idle using the right screw do you mean the right carb or the idle adjusting screw on left carb on top ?
Set the mixture screws back to 2 1/2 turns out and adjust the idle using the right screw. Take the van for a 15-20 minute run and take the adjustment tools with you. If you try adjusting the idle without getting the engine up to operating temperature first you won't get it set right anyway. See if you can borrow a tacho and set the idle to 800-850 RPM. Just setting it to stop the engine stalling means it's probably set too high anyway.
should engine be off when setting mixture screws back ?
you say adjust the idle using the right screw do you mean the right carb or the idle adjusting screw on left carb on top?
anyone ?
by all means add it to the wiki pages...make good toilet reading !
Have you checked to see if the throttle is opening fully when the throttle pedal is hard down? Mine was only opening half way. I adjusted the cable and it made a big difference.
thanks for the offer...I can manage to adjust screws and hope for the best with setting the mixtures but using the multi metre etc is all foreign to me !
not a million miles from you in enfield
timing has been set so at least that's fine !
Have you checked to see if the throttle is opening fully when the throttle pedal is hard down? Mine was only opening half way. I adjusted the cable and it made a big difference.
I think the answer may be in your signature. Just take your bus to Elite and get another engine. I reckon it is just a slow, worn out, back firing piece of sh!t that is not woth wasting money on.
