Does the points spark when you open them with the power on. If it doesn't, the problem is before there, which could be condensor failure, the condensor wire not attached, the wire loose or off on the coil. If it sparks, it coud be the cap, or the coil lead, or the coil itself. The condensor is a cheap place to start, & seems to fail almost like the manufacturer wants you to buy another very soon .

Hi

Ok i will go through it it is 1978 HB310 , here a good condenser is about 10 U$$ just wanted to know whether it is the exact problem before buying

thanks
regards
sumith

That is a common value and should work for ordinary point & coil ignition. (at least for a while, because if the value is off the points will erode).
I've only used single wire condensers in point and coil ignition systems in my early 70's datsun engines.

A two wire one could be a single case containing two condensers back to back. This is a non-polar capacitor(or condenser), most common in speaker crossover circuits.

I have not seen them used in ordinary points and coil ignition. but I've seen two wire condensers mentioned on this site so I'd do a search for that to see the reason for them. What year is your car or sort of ignition system is in our car? Datsun was transitioning away from points and coil(Kettering ignition) in the mid-70's.

Condensers are so inexpensive, I'd get the right one for your car

Hi Guys

My b310 doesn't start no spark is coming to the spark plugs
just thinking about ignition condenser which looks gone bad
it has 2 wires ignition condenser what is the UF rating do i need for it can i put single wire condenser for it i have .22UF single wire condenser ?

thanks
regards
sumith