Vanguard v twin problem.

[Stubby]

31 minutes ago, fleehillfarm said:

When I first wrote to the Forum regarding my smoky V twin 20hp I wanted to add a short video of the engine but lacked the necessary skill to load up a video. However my grown up children came to stay with me for Christmas and for them it's second nature so here's the video. Better late than never it may still provoke a eureka moment from somebody to tell me what was wrong. Still intending to strip down the engine in the New Year. Happy New Year to everyone on the forum.

Does it smell of burnt oil ? Could be getting by the rings or the valve guids ...

[spudulike]

Yup, it will either be petrol or oil.

The colour of the plug after a bit of running may give you further info....black is rich, white or oily....oil.

[fleehillfarm]

So its well into the new year now and just to update I have completely removed the engine and put in new piston rings. That is in addition to the new head gasket that I did in the last part of last year and the engine is still smoking from the right hand cylinder.  What on earth can I try next. This has become a battle of wills and I'm  not giving up. I do have another question that someone may be able to help me with. When I was adjusting the governor after I reassembled the engine I searched online for information. Several different posts on youtube said that you hold the governor arm fully down to open up the throttle to full and then turn the governor shaft clockwise until it clicks and tighten down. Well I finally acquired the workshop manual a  genuine one by Briggs and Stratton and it says you open the throttle to full by pushing the governor arm down and then you turn the governor shaft anti-clockwise until it clicks and tighten it down.  Can anyone shed any light on this. It wasn't only one post that said clockwise but several of them. If anyone has personal experience of these engines mine is a 351777 . Thanks.

[Stubby]

3 hours ago, fleehillfarm said:

So its well into the new year now and just to update I have completely removed the engine and put in new piston rings. That is in addition to the new head gasket that I did in the last part of last year and the engine is still smoking from the right hand cylinder.  What on earth can I try next. This has become a battle of wills and I'm  not giving up. I do have another question that someone may be able to help me with. When I was adjusting the governor after I reassembled the engine I searched online for information. Several different posts on youtube said that you hold the governor arm fully down to open up the throttle to full and then turn the governor shaft clockwise until it clicks and tighten down. Well I finally acquired the workshop manual a  genuine one by Briggs and Stratton and it says you open the throttle to full by pushing the governor arm down and then you turn the governor shaft anti-clockwise until it clicks and tighten it down.  Can anyone shed any light on this. It wasn't only one post that said clockwise but several of them. If anyone has personal experience of these engines mine is a 351777 . Thanks.

Oil could be getting by the valve guides on that smoky cylinder . 

[fleehillfarm]

Thank you Stubby. If that is the case is it just a matter of grinding in the valves or is it a faulty valve seal. I believe there is only one valve seal on the inlet valve?

[Muddy42]

take the head off and clean everything, it should be pretty obvious if the valve isn't seating properly. you could then use lapping compound.

Edited 1 hour ago by Muddy42

[Muddy42]

just found this:

Google Search

WWW.GOOGLE.COM

 

Google Search

WWW.GOOGLE.COM

 

[fleehillfarm]

Thanks I'll try that next. 

 

[Stubby]

1 hour ago, fleehillfarm said:

Thank you Stubby. If that is the case is it just a matter of grinding in the valves or is it a faulty valve seal. I believe there is only one valve seal on the inlet valve?

No , although it would not hurt to lap the valves i . I was talking about the valve guides . They might be worn .