Hi Gents,
Here's one to test your fault diagnostic skills on lol!
I have a B&S 24HP V-Twin (Model 445677 - Family 6BSXS.7242VF) Which is a horizontal V with dual barrel carburetor.
It start Ok and revs up Ok (a little hesitant) but when idles the anti-stall is always blipping the throttle every second or two. But worst of all it's randomly (every 5 to 20 seconds) missing and backfiring through the exhaust and inlet ports.
In desperation I've checked all of the following is Ok...
Any thoughts or additional things to check guys?
Thanks for your help.
Neo
Here's one to test your fault diagnostic skills on lol!
I have a B&S 24HP V-Twin (Model 445677 - Family 6BSXS.7242VF) Which is a horizontal V with dual barrel carburetor.
It start Ok and revs up Ok (a little hesitant) but when idles the anti-stall is always blipping the throttle every second or two. But worst of all it's randomly (every 5 to 20 seconds) missing and backfiring through the exhaust and inlet ports.
In desperation I've checked all of the following is Ok...
- Spark plugs are OK --- But both were sooty (black)
- Both ignition coils OK --- Swapped out with known working ones
- Stays running on either cylinder --- with one HT lead earthed down
- Ground Wire Harness (with two diodes) --- Disconnected but no effect
- Flywheel Shear Key --- Checked in good shape
- Carburetor Solenoid --- Removed and confirmed working
- Carburetor stripped down. Was dead clean inside but still blew out jet with airline.
- Cylinder Compressions are 160/165 PSI
- Inlet and Exhaust Pushrods checked --- all 4 dead straight
- Valve Clearance set ---- as per spec.
Any thoughts or additional things to check guys?
Thanks for your help.
Neo