4.5hp Bradford Amanco engine
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4.5hp Bradford Amanco engine
Hi, I am back again with a problem with my 4.5hp Bradford Amanco engine, I have had the head off and removed a lot of carbon, ground the valves in and skimmed the needle valves in the carb. which were out of round, I reassembled the engine and fired it up, it started easily but ran like a hit and miss engine, I noticed that the inlet valve didn't have a lot of movement on it, it just seemed to vibrate, could somebody give me some advice please as I am at a loss to know what to do next.
Thanks, Bernard
Thanks, Bernard
steamman- Expert
- Posts : 57
Join date : 2013-10-17
Age : 84
Location : Leicestershire.
Re: 4.5hp Bradford Amanco engine
Hi Bernard,i'm no expert but it seems kind of like the cylinder isn't getting enough fuel or something.I have heard of people saying that the valve springs on their engines were too strong so the valves couldn't open enough.This might not be the case with your engine though.Another thing that would stop the valve from opening enough could be that the engine hasn't enough compression so the valve couldn't pull the intake valve in enough.Just something to keep in mind.Regards,Eamonn
emu15- Born to be wild
- Posts : 11
Join date : 2017-01-09
Age : 22
Re: 4.5hp Bradford Amanco engine
Try running it faster.
Appletop- Life Member
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Join date : 2010-01-02
Age : 56
Location : Just outside Diss
Re: 4.5hp Bradford Amanco engine
Another problem could be timing
emu15- Born to be wild
- Posts : 11
Join date : 2017-01-09
Age : 22
Re: 4.5hp Bradford Amanco engine
Hi, thanks for all your advice, I increased the speed of the engine and it has cured the problem.
Bernaed.
Bernaed.
steamman- Expert
- Posts : 57
Join date : 2013-10-17
Age : 84
Location : Leicestershire.
Re: 4.5hp Bradford Amanco engine
Thought that might be the case.
Appletop- Life Member
- Posts : 1479
Join date : 2010-01-02
Age : 56
Location : Just outside Diss
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