www.stationaryengineforum.net
Please log in , the forum is open to guests who are now able to view every section, feel free to become a member , you will then be able to post and reply to topics.

getting lost for ideas

View previous topic View next topic Go down

getting lost for ideas

Post by kevin bird on Sun Jun 09 2013, 08:11

I have got two Lister d's both of which i cant get to run and i am supposed to be taking them to astle park in two weeks
Timing is correct on them both
Good strong spark on them both
Plenty of air getting in
Good compression
Each time i try spark plug comes out wet or they run for a minute producing black smoke and banging then cut out

Struggling so any advice would be appreciated

Thanks

kevin bird
Expert
Expert

Posts : 79
Join date : 2010-10-29
Age : 29
Location : Oldham

Back to top Go down

Re: getting lost for ideas

Post by kevjhnsn on Sun Jun 09 2013, 11:24

are the carbs like the wolseley wds ,were the needles in the carb are /can slip or be put at the wrong level for the floats and then they can flood into the engine slowly but continously, as its just a small wire soldered onto the float and a small groove in the needle for it to line up to
thats one thing it could be ,that ive missed and over looked in the past
kev

_________________
lol! " IF YOU DONT DO ANYTHING " "" YOU'LL NEVER MAKES MISTAKES "" lol!

kevjhnsn
Life Member
Life Member

Posts : 3598
Join date : 2011-02-10
Age : 38
Location : south cheshire

Back to top Go down

Re: getting lost for ideas

Post by matt86 on Sun Jun 09 2013, 12:00

sounds like a fuel problem to me , strip carb and give it a good clean . When starting are you winding the handwheel fully out and then once running shutting down to around halfway ?

matt

matt86
Admin

Posts : 5581
Join date : 2011-03-29
Age : 30
Location : swindon/ faringdon

Back to top Go down

Re: getting lost for ideas

Post by stationary stu on Sun Jun 09 2013, 12:11

Sounds like over fueling to me, as above check carb and float.

Stu.

_________________
Engines are just like Pringles .... one is never enough.  Very Happy                                        I used to love tractors all I would ever think/talk about. Then one day out of the blue I went on to statinary engines, So you could say I'm an extractor fan.

stationary stu
Life Member
Life Member

Posts : 8962
Join date : 2009-07-21
Age : 58
Location : Stanley, Co. Durham.

Back to top Go down

Re: getting lost for ideas

Post by kevin bird on Sun Jun 09 2013, 12:35

Had it running now this morning but knocking a lot
As soon as I try to turn wheel down it cuts out and I have to tension the adjustable governor spring a lot

kevin bird
Expert
Expert

Posts : 79
Join date : 2010-10-29
Age : 29
Location : Oldham

Back to top Go down

Re: getting lost for ideas

Post by steve w on Sun Jun 09 2013, 16:27

I have found that a new spark plug sometimes does the trick especially a hotter running one as these engines only tick over slow so the plug might need to be kept hotter.

steve w
A credit to the forum
A credit to the forum

Posts : 498
Join date : 2012-09-15
Age : 44
Location : Nr Wolverhampton

Back to top Go down

Re: getting lost for ideas

Post by nutgone on Sun Jun 09 2013, 19:24

Sounds like the carbs need a really good strip down & clean. The main trouble is they are mostly made of cast iron, which rusts. As someone has suggested, Check the float position on the float needle, make sure the little hole in the float chamber cap is clear as well, or the needle won't be able to rise into it. Also check the float actually stops the fuel entering the chamber when it rises (un-screw the cap & switch the fuel on). The needle can get crud caught under it or the tapered end can get worn, causing fuel to continue to flow in when it shouldn't.

It sounds like a major over fuelling issue, but how good are your magnetos? If you have a multimeter then test the coil on both of them, you should get a steady reading in the thousands of Ohms range (somewhere around 4 to 8 K.ohms) between the high tension output & the chassis of the mag (you're best to remove the Bakelite cover to test this). Then test that you get the same reading through the HT lead with the mag cap back on, if not then the contacts aren't touching & this will reduce your spark (& put extra strain on your mag coil), in this case they just need bending a little to make contact.

Also, it might be worth getting yourself a couple of new condensers from a motor spares shop (just ask for Lucas condensers off a Morris Minor or a Mini). You can & will still get a good spark with a knackered condenser, but it will either run very rough or not at all. It foxes a lot of people, but worn condensers can give you all sorts of weird rough running engine symptoms (I always replace them now, since I got a proper tester for them. I've never tested an old condenser & been happy to put it back into a magneto, every single one out of the last 20 or so have shown signs of breaking down internally).

Can't be much though, you'll have them running sweet as a nut soon enough. Wink

_________________
The "F" key is dying on my computer, please remember this when reading my posts, I'm trying to avoid using it.

The name's Matt, but call me Nutts if you like, there's already enough Matt's about.

nutgone
Life Member
Life Member

Posts : 2356
Join date : 2012-07-04
Age : 37
Location : East Sussex

Back to top Go down

Re: getting lost for ideas

Post by Sponsored content Today at 18:35


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum