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D7 wont start.
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Geoffrey25
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March 13, 2019 - 8:51 pm
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HI all just put new piston ,small end bearing with a standard barrel and head on my 1966 d7 also refurbished amal 375/31 carb took a while but managed to get it started the trouble now is I cannot get it started again. I have a good spark and fuel to the plug and the carb needle is 2nd notch from top , with all the kick starting action I flooded the crank case I drained it but it still will not start any ideas please thanks joe.

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cocorico
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March 14, 2019 - 8:02 am
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This seems to be a common problem. Try starting problems site:bsabantamclub.com/forum in your browser query box to see previous posts.

The Bantam Club Forum - all the answers are in there.

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sunny
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March 14, 2019 - 9:54 am
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 the  needle   seting   for   D 5  & 7  is     high    4 th  from  the  TOP  as  the  375   is  a  4 strok  carb  &  fited  to  all  bsa modles  at  the  time  try a STANARD    RECH   LONG   NOSE    PLUG    NOT  a short or     long  rech  plug  , just    like  the  autolite   power  tip ,   i  think   the Pilot jet   passages  one  in   each  part  of  the carb  must be  clean  too   them  reset the  carb    ,remember   the engine   runs  rich ,   till  the  rings  bed  in  

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Geoffrey25
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March 14, 2019 - 7:28 pm
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HI all thanks for your replies regarding the 375 carb just be clear what is the standard clip position on the needle is it 2nd from the top or2nd from the bottom end because I did get the  d7 running again but the plug is oily wet many thanks joe.

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sunny
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March 14, 2019 - 9:23 pm
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hi Joe     the  wording  on  Service  sheet  510   says    [ jet needle  position  ,.,.    ,.,. second   notch   from TOP ,   D 5 and  D 7 ,   fourth ]

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Geoffrey25
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March 15, 2019 - 6:18 pm
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H I sunny I got my d7 started today on 2nd kick and got it to tick over quit well but then I did a compression test and it read 76 psi , I don't know what it should be  any ideas please thanks joe.

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sunny
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March 15, 2019 - 7:53 pm
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 hi  Joe    it  will    get  beter        &  i  dont  have  its  dater     try   loding   as  in  post    2  above  for  info  

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bart
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March 15, 2019 - 8:01 pm
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Geoffrey25 said
H I sunny I got my d7 started today on 2nd kick and got it to tick over quit well but then I did a compression test and it read 76 psi , I don't know what it should be  any ideas please thanks joe.  

I think it should be about 120, have a search, this was covered a few years ago..

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GCOBBY
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March 18, 2019 - 7:58 pm
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Had probs with mine, you need to go for the real basic things.Is the plug sparking? Sometimes it can be a faulty suppressor cap, try spark lead with suppressor cap removed ,touching it to earth.No spark then need to check in the area off  contact points. Always try the easy things first.

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