Spark plugs?

[bernardofeio]

helloo

After the engine rebuilt the engine now starts miserablement from one cylinder and the other only starts very badly!

I put some new spark plugs and after some kms I remove them. One is partially dirty with carbon deposits and the other is completely black

Any thoughts?

I think that the fuel consumption is also higher

(I still didn’t clean and adjust the carbs but it was working much better before the rebuilt)

R100gs

bernardo feio

 

[B Murr]

Could the carbon deposits and black be too rich a mixture. What about timing, is the spark arriving too late and hence the mixture not burning correctly. Might be worth checking the timing with a timing gun?

 

[Kenny]

First:-

Check for 2mm free play in both the choke cables and ensure they are also returning fully to off when the choke lever is in the off position

 

[bernardofeio]

I NEVER use the choke, even in the coldest days.

If I push the choke the engine will never start.

 

[VAL. H.]

I NEVER use the choke, even in the coldest days.

If I push the choke the engine will never start.

Sounds like it's running too rich and the carbs are at least out of balance. It would surly be well worth getting the carbs fully overhauled and then properly balanced.

Also check your ignition timing, and all the relative electrical connections.


Val.

 

[bernardofeio]

Hello

is there any other way to adjust the timming with out a timing gun?